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universehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/news-g-matter-universe-content.pngnews-g-matter-universe-contenthttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/hs-article-glens-2400x1200-1.jpghs-article-gLens-2400x1200https://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/gravitational-lensing-galaxyapril12_2010-1024x768-1.jpgGravitational-lensing-galaxyApril12_2010-1024x768https://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/o8os8p7azyt91.jpgo8os8p7azyt91https://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/12731994_f520.jpg12731994_f520https://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/maxresdefault.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/07/measurementsoftheabundanceofdeuteriumandlithiumrelativetohydrogenindicatethatnormalmattercomprisesonly4ofthecriticaldensity-1-425292398-e1720123571666.jpgMeasurements+of+the+abundance+of+deuterium+and+lithium+(relative+to+hydrogen)+indicate+that+normal+matter+comprises+only+4%+of+the+critical+density!How can this be The universe has critical density, but matter is only 4% What is the remaining 96% of the density of the 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atom diagram conceptHydrogen atom diagram concept illustrationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/06/ionizedgasesareopaquebecausetheycontainfreeelectronsthatscatterphotonsofanyenergy.jpgIonized+gases+are+opaque+because+they+contain+free+electrons+that+scatter+photons+of+any+energy.Photons (blue squiggles) don’t move freely through space, because they collide with electrons (purple dots).https://cosmosatyourdoorstep.com/wp-content/uploads/2024/06/researchers-pinpoint-t.jpgresearchers-pinpoint-thttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/1eaf134f740cdf47487c065783ce0d38-visualization-tools-book-projects.jpg1eaf134f740cdf47487c065783ce0d38--visualization-tools-book-projectshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/ztwc8mbzd8esrsatqgcepc-1200-80.jpgSpace warp travel trough universeTraveling at the speed of light, time-warp trough universe filled with stars and space dust.2025-02-27T09:00:26+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/05/26/the-first-nucleosynthesis/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/stsci-h-first-stars-composition-1044x691-1.jpgSTScI-H-first-stars-composition-1044x691https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/088d97426d00b59acbde568268770858.jpg088d97426d00b59acbde568268770858https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/earlyuniverseelementbuilding.pngearlyuniverseelementbuildinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/early-universe-element-building-steps.pngEarly Universe Element Building Stepshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/at_7e_figure_27_06.jpgAT_7e_Figure_27_06https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/gpawg-deuterium-tritium-fuel-2.jpggpawg-deuterium-tritium-fuel-2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/arrow_jpg.jpgArrow_JPGhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/featured_nucleosynthesis_era_facts.jpgfeatured_nucleosynthesis_era_facts2025-02-27T08:59:21+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/05/19/the-universes-first-moments/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/matter-antimatter-asymmetry-l.jpgmatter-antimatter-asymmetry-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/th-2.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/th-1.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/th.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/figure29-05.jpgfigure29-05https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/4d5476480232702d4ab91db4ac92e048.png4d5476480232702d4ab91db4ac92e048https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/5.-antimatter_-matter-antimatter-table-1.png5.-Antimatter_-Matter-Antimatter-table-1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/subatomicparticlesmassescharges.jpgSubatomic+particles+masses+chargeshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/c55a6621bec5900069f92054e275ed8a-1702595424-e1716163188606.jpgc55a6621bec5900069f92054e275ed8ahttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/aegis_antimatter_trap.pngaegis_antimatter_trap2025-02-27T08:52:07+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/05/12/the-cosmic-microwave-background-radiation/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/blackbody-radiation-fig1.pngblackbody-radiation-Fig1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/atmospheric-electromagnetic-opacity.webpAtmospheric-Electromagnetic-Opacityhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/990015b.jpg990015bhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/trifid-nebula-in-visible-light.jpgTrifid-Nebula-in-visible-lighthttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/m42detailed_drudisgoldman_8150.jpgM42Detailed_DrudisGoldman_8150https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/nx8awtyb_400x400.jpgNx8aWtyb_400x400https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/gamow-1.jpggamowhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/gamow.jpggamowhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/field_notes.jpgfield_noteshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/cmbr_planck_3600.jpgcmbr_planck_36002025-02-27T08:50:21+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/05/11/what-is-a-light-year/https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/mph.jpgMPHhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/csillagkeptura.jpgcsillagkepturahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/light-year-space.jpglight-year-space2025-02-27T08:49:21+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/05/08/what-was-the-big-bang/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/hubbletimeyearscayd2.jpgHubbleTimeYearsCAYD2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/hubbletimeyearscayd.jpgHubbleTimeYearsCAYDhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/hubble-time.jpgHubble Timehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/1951c7f1d03dd167ae30559ceee0c00d.png1951c7f1d03dd167ae30559ceee0c00dhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/nasa-james-webb-space-telescope-multilayered-sunshield-scaled-1.webpNASA-James-Webb-Space-Telescope-Multilayered-Sunshield-scaledhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/capture-2.jpgCapture-2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/dreamstime_m_112764179_1.jpgdreamstime_m_112764179_1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/big-bang-high-xxxl.jpgBig-Bang-high-xxxlhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/05/figure22.pngfigure22https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/timeline_portrait.jpgTimeline_portrait2025-02-27T08:48:05+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/04/16/a-full-story-of-galactic-evolution/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/stsci_ngc1275_composite.jpgstsci_NGC1275_compositeThe active galaxy NGC 1275 is also a well-known radio source (Perseus A) and a strong emitter of X-rays due to the presence of a black hole in the center of the galaxy. The behemoth also lies at the center of the cluster of galaxies known as the Perseus Cluster. Detail and structure from X-ray, optical, and radio wavelengths combine for an aesthetically pleasing, but nonetheless violent depiction of events going on at the heart of the galaxy. In the composite image, the X-ray data contribute to the soft violet shells around the outside of the center. The pinkish lobes toward the center of the galaxy are from radio frequencies. The radio emission, tracing jets from the black hole, fills the X-ray cavities. Dust lanes, star-forming regions, hydrogen filaments, foreground stars, and background galaxies are contributions from the Hubble optical data.https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/perseuscluster_gabany_abell426.jpgPerseusCluster_gabany_abell426https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/milky-way-structure.pngMilky-Way-structurehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/https___blogs-images.forbes.com_startswithabang_files_2017_09_1-hyvx_xq3p8ffeyzqe5wa-g.webphttps___blogs-images.forbes.com_startswithabang_files_2017_09_1-HyVX_xQ3P8ffEyZQE5wA-ghttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/sagittarius_collisions_trigger_star_formation_in_milky_way_article.jpgsagittarius_collisions_trigger_star_formation_in_milky_way_articlehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/what-is-cosmological-redshift-crop-1536x1165-1.webpWhat-is-Cosmological-Redshift-Crop-1536x1165https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/stsci-01f920qhxsfnqscn14zyvdrr6x.pngSTScI-01F920QHXSFNQSCN14ZYVDRR6Xhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/20160901-speed-of-light-distances.jpg20160901-speed-of-light-distanceshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/arp-271-astronomy-magazine-submission-june-15-2018.jpgArp-271-Astronomy Magazine Submission June 15 2018https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/th-1.jpgth2025-02-27T08:28:42+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/04/02/why-galactic-nuclei-erupt/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/milky-way-gamma-ray-bubbles-nasagoddard-space-flight-center.jpgmilky-way-gamma-ray-bubbles-nasagoddard-space-flight-centerhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/new_milky_way-2.jpgnew_milky_way-2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/20-cm-vla-image-of-the-radio-source-3c-75-in-the-cluster-of-galaxies-abell-400-the-imageedited.jpg20-cm-vla-image-of-the-radio-source-3c-75-in-the-cluster-of-galaxies-abell-400-the-imageeditedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/3c31_radio_optical_montage_alan_bridle.png3c31_radio_optical_montage_alan_bridlehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/ngc-1265-radio-source-in-galaxy-cluster-l.jpgngc-1265-radio-source-in-galaxy-cluster-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/ngc5128_starshadows-1.webpngc5128_starshadowshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/cartwheel-galaxy.jpgDoing cartwheels to celebrate the end of an eraAn image of the Cartwheel Galaxy taken with the NASA/ESA Hubble Space Telescope has been reprocessed using the latest techniques to mark the closure of the Space Telescope European Coordination Facility (ST-ECF), based near Munich in Germany, and to celebrate its achievements in supporting Hubble science in Europe over the past 26 years. Astronomer Bob Fosbury, who is stepping down as Head of the ST-ECF, was responsible for much of the early research into the Cartwheel Galaxy along with the late Tim Hawarden — including giving the object its very apposite name — and so this image was selected as a fitting tribute. The object was first spotted on wide-field images from the UK Schmidt telescope and then studied in detail using the Anglo-Australian Telescope.Lying about 500 million light-years away in the constellation of Sculptor, the cartwheel shape of this galaxy is the result of a violent galactic collision. A smaller galaxy has passed right through a large disc galaxy and produced shock waves that swept up gas and dust — much like the ripples produced when a stone is dropped into a lake — and sparked regions of intense star formation (appearing blue). The outermost ring of the galaxy, which is 1.5 times the size of our Milky Way, marks the shock wave’s leading edge. This object is one of the most dramatic examples of the small class of ring galaxies.This image was produced after Hubble data was reprocessed using the free open source software FITS Liberator 3, which was developed at the ST-ECF. Careful use of this widely used state-of-the-art tool on the original Hubble observations of the Cartwheel Galaxy has brought out more detail in the image than ever before. Although the ST-ECF is closing, ESA’s mission to bring amazing Hubble discoveries to the public will be unaffected, with Hubblecasts, press and photo releases, and Hubble Pictures of the Week continuing to be regularly posted on spacetelescope.org. Links Space Telescope European Coordinationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/antennae-galaxies.pngantennae-galaxieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/ngc5128_starshadows.webpngc5128_starshadowshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/04/eso-146-5-48f03ae4-a805-4481-8859-3cfa4b3b0e0-resize-750.jpgeso-146-5-48f03ae4-a805-4481-8859-3cfa4b3b0e0-resize-7502025-02-27T08:26:47+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/27/how-supermassive-black-holes-work/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/expansion.gifexpansionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/what-is-meant-by-the-kinetic-theory-of-matter-1.pngWhat-is-meant-by-the-Kinetic-Theory-of-Matter-1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/99a2decac2b84d118d671d6307612005.jpg99a2decac2b84d118d671d6307612005https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/event-horizon-telescope-reveals-magnetic-fields-at-milky-ways-central-black-hole.jpgEvent-Horizon-Telescope-Reveals-Magnetic-Fields-at-Milky-Ways-Central-Black-Holehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/thumbnail_25.jpgthumbnail_25https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/m87-black-hole-magnetic-field-lines-relativistic-jet.jpgM87-Black-Hole-Magnetic-Field-Lines-Relativistic-Jethttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/eso1515a_300dpi_full.jpgArtist’s impression of a supermassive black hole at the centreThis artist’s impression shows the surroundings of a supermassive black hole, typical of that found at the heart of many galaxies. The black hole itself is surrounded by a brilliant accretion disc of very hot, infalling material and, further out, a dusty torus. There are also often high-speed jets of material ejected at the black hole’s poles that can extend huge distances into space. Observations with ALMA have detected a very strong magnetic field close to the black hole at the base of the jets and this is probably involved in jet production and collimation.https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/nstarvsvancouver.jpgnstarvsvancouverhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/image-26.jpgimage-26https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/image-2.pngimage-22025-02-27T08:25:37+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/26/solar-eclipse-sights/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/total-solar-elipse-diamondring-beads.jpgtotal-solar-elipse-diamondring-beadshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/buac18-img-tsecomposite.jpgbuac18-img-tsecompositehttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/eclipse20170821_jah_totality.jpgEclipse20170821_JAH_Totalityhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/th.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/solar-eclipse-diamond-ring-john-king.jpgsolar-eclipse-diamond-ring-john-kinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/2017-08-26_59a0d73e2ab63_baileysbeads.jpg2017-08-26_59a0d73e2ab63_BaileysBeadshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/sunspotter_fig2.gifSunspotter_fig2https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/sun100.jpgsun100https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_1774.jpgIMG_17742025-02-27T08:23:22+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/26/the-solar-eclipse/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/img_5574_sharpened_coloradded_sayd.jpgIMG_5574_sharpened_coloradded_SAYDhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/img_5574_sharpened_coloradded.jpgIMG_5574_sharpened_coloraddedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/p9y9gdp7b5zvcjshf5musp-1200-80.jpg2017 Total Solar EclipseThe Moon is seen passing in front of the Sun during a solar eclipse from Ross Lake, Northern Cascades National Park, Washington on Monday, Aug. 21, 2017. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American continent along with parts of South America, Africa, and Europe. Photo Credit: (NASA/Bill Ingalls)https://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/solar_eclipse_legazpi_cnnph.jpgsolar_eclipse_Legazpi_CNNPHhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/eclipse-sequence.jpg09 March 2016 - Total Solar Eclipse from Palu, Indonesia09 March 2016 - Total Solar Eclipse from Palu, Indonesiahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/penumbraumbra.pngpenumbra:umbrahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/solar-eclipse2.jpgsolar eclipse2https://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/usa_eclipse_map_print.jpgusa_eclipse_map_printhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/moon-shadow.jpg1750x2750_ahim08_b1_nhs_2016069_015000A still image shows the Earth, as seen by Japanese geostationary satellites, during a total solar eclipse.https://cosmosatyourdoorstep.com/wp-content/uploads/2014/10/3213d7f700000578-0-image-m-43_1457650741668.jpg3213D7F700000578-0-image-m-43_14576507416682025-02-27T08:20:13+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/20/what-the-heck-is-a-quasar/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/the-light-curves-of-the-four-bright-quasar-images-in-sdss-j1004-4112-the-b-c-and-d_q320.jpgThe-light-curves-of-the-four-bright-quasar-images-in-SDSS-J1004-4112-The-B-C-and-D_Q320https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/normalized-light-curves-of-quasar-1156-295-square-and-calibrators-diamond-in-december.pngNormalized-light-curves-of-quasar-1156-295-square-and-calibrators-diamond-in-Decemberhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/figure27-03.jpgfigure27-03https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/quasar-optical-spectrum-l.jpgquasar-optical-spectrum-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/quasar-3c-273-777x767-1.jpgQuasar-3C-273-777x767https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/maxresdefault-152614895-e1710554179424.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/g7-title.webpG7-Titlehttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/th.jpgth2025-02-27T08:17:46+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/15/exploring-radio-lobes/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/20-cm-vla-image-of-the-radio-source-3c-75-in-the-cluster-of-galaxies-abell-400-the-imageedited.jpg20-cm-VLA-image-of-the-radio-source-3C-75-in-the-cluster-of-galaxies-Abell-400-The-image(edited)https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/20-cm-vla-image-of-the-radio-source-3c-75-in-the-cluster-of-galaxies-abell-400-the-image.png20-cm-VLA-image-of-the-radio-source-3C-75-in-the-cluster-of-galaxies-Abell-400-The-imagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/3c31_radio_optical_montage_alan_bridle.png3C31_radio_optical_montage_Alan_Bridlehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/ngc-1265-radio-source-in-galaxy-cluster-l.jpgngc-1265-radio-source-in-galaxy-cluster-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/is-this-not-a-wat-using-the-vla-data-presented-in-gendron-marsolais-et-al-3-left.pngIs-this-not-a-WAT-Using-the-VLA-data-presented-in-Gendron-Marsolais-et-al-3-Lefthttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/black-hole-jet-stream2.jpgBlack-Hole-Jet-Stream2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/th.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/12689112_f520.jpg12689112_f520https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/cygnus_a_2400x1116edited.jpgcygnus_a_2400x1116(edited)https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/cygnus_a_2400x1116.jpgCygnus_A_2400x11162025-02-27T08:16:37+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/03/06/what-are-seyfert-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/ngc7469-hst.jpgNGC7469-HSTThis striking image from the NASA/ESA Hubble Space Telescope showcases Arp 298, a stunning pair of interacting galaxies. Arp 298 — which comprises the two galaxies NGC 7469 and IC 5283 — lies roughly 200 million light-years from Earth in the constellation Pegasus. The larger of the two galaxies pictured here is the barred spiral galaxy NGC 7469, and IC 5283 is its diminutive companion. NGC 7469 is also host to an active, supermassive black hole and a bright ring of star clusters. The “Arp” in this galaxy pair’s name signifies that they are listed in the Atlas of Peculiar Galaxies compiled by the astronomer Halton Arp. The Atlas of Peculiar Galaxies is a rogues’ gallery of weird and wonderful galaxies containing peculiar structures, featuring galaxies exhibiting everything from segmented spiral arms to concentric rings. This interacting galaxy pair is a familiar sight for Hubble — a portrait of the merging galaxies in Arp 298 was published in 2008. This image of Arp 298 contains data from three separate Hubble proposals. By combining observations from three proposals, Arp 298 is captured in glorious detail in seven different filters from two of Hubble’s instruments — the Wide Field Camera 3 and the Advanced Camera for Surveys. The process of planning Hubble observations starts with a proposal — a detailed plan of what an astronomer intends to observe and their scientific motivation for doing so. Once a year, these proposals are gathered and judged in a gruelling review process which assess their scientific merit and feasibility. Fewer than 20% of the proposed observations in any given year will make it through this process and be approved, which makes observing time with Hubble highly prized indeed. This system will be one of the first galaxies observed with the NASA/ESA/CSA James Webb Space Telescope as part of the Director's Discretionary Early Release Science Programs in Summer 2022.https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/325549.jpg325549https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/r2mcj.pngr2mcJhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/sp1211c4f54.gifsp1211c4f54https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/blink182-1.jpgblink182-1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/seyfert1edited-1.pngseyfert1edited-1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/seyfert1edited.pngseyfert1editedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/pasted-image-0-1.pngpasted image 0https://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/ngc1832_whole.gifNGC1832_wholehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/03/stsci-01f8qytqck41rtncfg5gm26avm.jpgSTScI-01F8QYTQCK41RTNCFG5GM26AVM2025-02-27T08:13:56+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/02/22/how-galaxies-evolve/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/lenticular-galaxy-ic-335-nasaesastsciscience-photo-library.jpglenticular-galaxy-ic-335-nasaesastsciscience-photo-libraryhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/th-4.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/th-3.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/th-2.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/th-1.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/milky-way-galaxy-sun-solar-system-earth-location-nasa-labeled-2.webpmilky-way-galaxy-sun-solar-system-earth-location-nasa-labeled-2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/ngc-1300.jpgNGC-1300One of the largest Hubble Space Telescope images ever made of a complete galaxy is being unveiled today at the American Astronomical Society meeting in San Diego, Calif. The Hubble telescope captured a display of starlight, glowing gas, and silhouetted dark clouds of interstellar dust in this 4-foot-by-8-foot image of the barred spiral galaxy NGC 1300. NGC 1300 is considered to be prototypical of barred spiral galaxies. Barred spirals differ from normal spiral galaxies in that the arms of the galaxy do not spiral all the way into the center, but are connected to the two ends of a straight bar of stars containing the nucleus at its center. At Hubble's resolution, a myriad of fine details, some of which have never before been seen, is seen throughout the galaxy's arms, disk, bulge, and nucleus. Blue and red supergiant stars, star clusters, and star-forming regions are well resolved across the spiral arms, and dust lanes trace out fine structures in the disk and bar. Numerous more distant galaxies are visible in the background, and are seen even through the densest regions of NGC 1300. In the core of the larger spiral structure of NGC 1300, the nucleus shows its own extraordinary and distinct "grand-design" spiral structure that is about 3,300 light-years (1 kiloparsec) long. Only galaxies with large-scale bars appear to have these grand-design inner disks — a spiral within a spiral. Models suggest that the gas in a bar can be funneled inwards, and then spiral into the center through the grand-design disk, where it can potentially fuel a central black hole. NGC 1300 is not known to have an active nucleus, however, indicating either that there is no black hole, or that it is not accreting matter. The image was constructed from exposures taken in September 2004 by the Advanced Camera for Surveys onboard Hubble in four filters. Starlight and dust are seen in blue, visible, and infrared light. Bright star clusters are highlighted in red by their associated emission fhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/flocculent-spiral-galaxy-ngc-3521-science-source.jpgflocculent-spiral-galaxy-ngc-3521-science-sourcehttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/7.jpg7https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/image.jpegimage2025-02-27T07:37:31+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/02/15/when-galaxies-collide/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/cartwheel-galaxy.jpgDoing cartwheels to celebrate the end of an eraAn image of the Cartwheel Galaxy taken with the NASA/ESA Hubble Space Telescope has been reprocessed using the latest techniques to mark the closure of the Space Telescope European Coordination Facility (ST-ECF), based near Munich in Germany, and to celebrate its achievements in supporting Hubble science in Europe over the past 26 years. Astronomer Bob Fosbury, who is stepping down as Head of the ST-ECF, was responsible for much of the early research into the Cartwheel Galaxy along with the late Tim Hawarden — including giving the object its very apposite name — and so this image was selected as a fitting tribute. The object was first spotted on wide-field images from the UK Schmidt telescope and then studied in detail using the Anglo-Australian Telescope.Lying about 500 million light-years away in the constellation of Sculptor, the cartwheel shape of this galaxy is the result of a violent galactic collision. A smaller galaxy has passed right through a large disc galaxy and produced shock waves that swept up gas and dust — much like the ripples produced when a stone is dropped into a lake — and sparked regions of intense star formation (appearing blue). The outermost ring of the galaxy, which is 1.5 times the size of our Milky Way, marks the shock wave’s leading edge. This object is one of the most dramatic examples of the small class of ring galaxies.This image was produced after Hubble data was reprocessed using the free open source software FITS Liberator 3, which was developed at the ST-ECF. Careful use of this widely used state-of-the-art tool on the original Hubble observations of the Cartwheel Galaxy has brought out more detail in the image than ever before. Although the ST-ECF is closing, ESA’s mission to bring amazing Hubble discoveries to the public will be unaffected, with Hubblecasts, press and photo releases, and Hubble Pictures of the Week continuing to be regularly posted on spacetelescope.org. Links Space Telescope European Coordinationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/antennae-galaxies.pngantennae-galaxieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/shells.jpgshellshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/ngc5128_starshadows.jpgNGC5128_starshadowshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/th.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/eso-146-5-48f03ae4-a805-4481-8859-3cfa4b3b0e0-resize-750.jpgeso-146-5-48f03ae4-a805-4481-8859-3cfa4b3b0e0-resize-750https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/universesandbox-collidinggalaxies.jpguniversesandbox-collidinggalaxieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/screenshot-2024-02-15-152617.pngscreenshot-2024-02-15-152617https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/screenshot-2024-02-15-150843.pngscreenshot-2024-02-15-150843https://cosmosatyourdoorstep.com/wp-content/uploads/2024/02/rl8liytlnagmedqiltqg.webprl8liytlnagmedqiltqg2025-02-27T07:35:30+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/02/07/exploring-galaxy-clusters/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/comacluster_carroll_1024.jpgComaCluster_Carroll_1024https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/virgo-cluster-galaxies-768x768-1.jpgVirgo-Cluster-galaxies-768x768https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/maxresdefault-1.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/c81df0c958aacd211080c779470d4e7c.jpgc81df0c958aacd211080c779470d4e7chttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/ff09e8e4d949ce3bc4d830b88c354123.jpgff09e8e4d949ce3bc4d830b88c354123https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/milky_way_satellites.jpgmilky_way_satelliteshttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/messier-32-messier-31-and-messier-110.jpgMessier-32-Messier-31-and-Messier-110https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/local-group-annotated-832deee.jpgScreenshotScreenshothttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/heic1523b_n.jpgheic1523b_nhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/abell-2151_lrgbhallas_2400.jpgAbell-2151_LRGBhallas_24002025-02-27T07:34:09+00:00monthlyhttps://cosmosatyourdoorstep.com/2024/01/31/is-dark-matter-real/https://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/dark-matter-900x600-1.jpgDark-Matter-900x600https://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/the-bullet-cluster-1e0657-56-and-baby-bullet-macsj00254-1222-the-background.pngThe-bullet-cluster-1E0657-56-and-baby-bullet-MACSJ00254-1222-The-backgroundhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/sxo2u.pngsXO2uhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/medium.bmpmediumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/curve2.jpgcurve2https://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/1.webp1https://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/hs-article-0720a-2400x1840-1.jpghs-article-0720a-2400x1840https://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/matter-pie-chart.pngMatter-Pie-Charthttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/coma-cluster-mosaic-2018-nasa-esa-scaled-1.jpgComa-Cluster-Mosaic-2018-NASA-ESA-scaledhttps://cosmosatyourdoorstep.com/wp-content/uploads/2024/01/3362.eagle_.png3362.eagle2025-02-27T07:22:57+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/10/10/a-peek-at-supermassive-black-holes/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/halo-galaxy-messier-87.webphalo-galaxy-Messier-87https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/super-massive-black-holes-diagram.jpgSuper-massive-Black-Holes-Diagramhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/opo0022b.jpgCorrelation of black hole Mass and bulge mass/brightnessThe results now show a close relationship between the black hole mass and the stars that comprise an elliptical galaxy or the central bulge stars of a spiral galaxy. But surprisingly, an even tighter correlation is found. 'Other observations of the entire stellar mass of the bulge show a very tight relationship between a black hole's mass and the depth of the gravitational potential well as measured by the magnitude of random velocities of stars in the galaxy's hub. This bolsters the conclusion that the mass correlation is real, ' says Gebhardt.https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/the-current-black-hole-mass-and-stellar-velocity-dispersion-m-bh-vs-s-phase-space.pngThe-current-black-hole-mass-and-stellar-velocity-dispersion-M-BH-vs-s-phase-spacehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/concept-black-hole-animation.gifConcept-Black-Hole-Animationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/image-7.pngimage-7https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/image-44.webpimage-44https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/stellar_evolution-1030x773-1.jpgstellar_evolution-1030x773https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/th-1.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/supermassive-black-hole-galaxy_1600.jpgsupermassive-black-hole-galaxy_16002025-02-27T07:20:33+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/10/09/how-massive-are-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/table18.1_galaxies.giftable18.1_galaxieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/galaxy-cluster-abell-3827.webpGalaxy-Cluster-Abell-3827https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/line_broadening-469x249-1.jpgline_broadening-469x249https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/u5dt3ryla7pxeg82awp2keddejk4bn7.gifu5dt3ryla7pxeg82awp2keddejk4bn7https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/aaakkil0.gifAAAKKIL0https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/th.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/f0703-linewidth.jpgf0703-linewidthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/orbits_saydwatermarked.pngorbits_SAYDwatermarkedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/orbit.jpgorbithttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/galaxyrotation.jpgGalaxyRotation2025-02-27T07:18:56+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/10/05/another-astrophotography-night/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/dumbbell_minfiity_rsg.jpgdumbbell_minfiity_rsghttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/ring_minfinity_rsg.jpgring_minfinity_rsghttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/swan_minfinity_rsg.jpgswan_minfinity_rsghttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/m22_minfinity_rsg.jpgm22_minfinity_rsghttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/m13_minfinity_rsg.jpgm13_minfinity_rsg2025-02-27T07:16:30+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/10/03/tonights-saturn/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/img_20231003_225936297.jpgIMG_20231003_225936297https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/img_20231003_225155212.jpgIMG_20231003_225155212https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/img_20231003_212106723-1.jpgIMG_20231003_212106723https://cosmosatyourdoorstep.com/wp-content/uploads/2023/10/img_20231003_212106723.jpgIMG_20231003_2121067232025-02-27T07:15:34+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/03/31/what-is-the-hubble-law/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/maxresdefault.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/the-spectra-of-galaxies-l.jpgthe-spectra-of-galaxies-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/doppler-redshift-astronomy-carlos-clarivan.jpgdoppler-redshift-astronomy-carlos-clarivanhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/osc_astro_21_04_doppler1.jpgOSC_Astro_21_04_Doppler1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/doppler-shift.webpDoppler-shifthttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/electromagnetic-spectrum.jpgelectromagnetic-spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/coblech3fig1.jpgCobleCh3Fig1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/doppler-effect-header.jpgdoppler-effect-headerhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/music1.pngmusic1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/sound-waves-ambulance-e1514343115198.pngsound-waves-ambulance-e15143431151982025-02-27T07:11:04+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/06/19/how-big-and-bright-are-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/hubble-views-spiral-galaxy-messier-77.webpHubble-Views-Spiral-Galaxy-Messier-77https://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/hubble-spiral-galaxy.jpghubble-spiral-galaxyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/elliptical-galaxies-l.jpgelliptical-galaxies-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/cc_ellipticalgalaxy_free.jpgcc_ellipticalgalaxy_freehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/elliptical-galaxy-2_orig.jpgelliptical-galaxy-2_orighttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/dwarf-galaxy-chart-small.jpgDwarf Galaxy Chart smallhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/angulardiameter.jpgangulardiameterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/doppershifting-58b8466c5f9b5880809c6ab0.jpgdoppershifting-58b8466c5f9b5880809c6ab0https://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/dopp-redshift02.jpgdopp-redshift02https://cosmosatyourdoorstep.com/wp-content/uploads/2023/04/hubble-sees-elliptical-galaxy-ngc-3923.webpHubble-Sees-Elliptical-Galaxy-NGC-39232025-02-27T07:04:02+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/03/23/how-far-away-are-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/galaxy-cluster-aco-s-295.webpGalaxy-Cluster-ACO-S-295https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/83ad93e6-5218-40dc-a08b-bfd31c6ab3aa_1.f53467de66c663339a7b82325411bcbe.webp83ad93e6-5218-40dc-a08b-bfd31c6ab3aa_1.f53467de66c663339a7b82325411bcbehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/18-05.jpg18-05https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/supnov1a.webpsupnov1ahttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/main-qimg-7bb567ed2ed0c0df9d956423472719b9-c.jpgmain-qimg-7bb567ed2ed0c0df9d956423472719b9-chttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/5f6f4fc35f1fb32311dbcf84a19d76ab.jpg5f6f4fc35f1fb32311dbcf84a19d76abhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/supernova.jpgsupernovahttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/opo9611a.jpgGlobular Cluster in the Andromeda GalaxyHubble Space Telescope has captured a view of a globular cluster called G1, a large, bright ball of light in the centre of the photograph consisting of at least 300, 000 old stars.https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/opo9449a.jpgCepheid Variable Star in Galaxy M100This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/opo1115e.jpgLight curve of Cepheid variable star V1This illustration shows the rhythmic rise and fall of starlight from the Cepheid variable star V1 over a seven-month period. Cepheid variables are pulsating stars that brighten and fade in a predictable pattern. The illustrated graph shows that V1 completes a pulsation cycle every 31.4 days. The red dots on the graph represent observations by the American Association of Variable Star Observers (AAVSO), who partnered with the Space Telescope Science Institute's Hubble Heritage Project to study the star. The four stars on the graph denote observations made by the Hubble Space Telescope's Wide Field Camera 3. Ten amateur astronomers from around the world made 214 observations of V1 between July 2010 and December 2010, obtaining four pulsation cycles. The AAVSO study allowed the Hubble Heritage team to target Hubble observations that would capture the star at its brightest and dimmest phases.2025-10-27T03:11:09+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/03/15/the-different-shapes-of-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/19-key-galaxies.webp19-key-galaxieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/ic2574.jpgIC2574https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/spiral-galaxies-ngc-2207-and-ic-2163-in-collision.pngSpiral-galaxies-NGC-2207-and-IC-2163-in-collisionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/opo0107a_n.jpgopo0107a_nhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/20180604_n2997.jpg20180604_n2997https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/spiral-galaxy-m66-european-southern-observatoryscience-photo-library.jpgspiral-galaxy-m66-european-southern-observatoryscience-photo-libraryhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/m65.jpgM65https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/m31_1920x1080.jpgm31_1920x1080https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/leo1_aao_big.jpgleo1_aao_bighttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/ellipticalgalaxy1.jpgellipticalgalaxy12025-02-27T06:48:20+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/03/10/a-universe-of-galaxies/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/image_access_800.jpgimage_access_800https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/main-qimg-a829b6872ee9d367323641fdc6baaa46.pngmain-qimg-a829b6872ee9d367323641fdc6baaa46https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/h-r-diagram.jpgH-R Diagramhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/385474497.jpg385474497https://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/hale-telescope-in-palomar-observatory.jpgThe 200-inch Hale Telescope at Palomar Observatoryhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/9ac36cc3a07f3f06d0f3_795xfull.jpg9ac36cc3a07f3f06d0f3_795xFullhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/th-2.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/great-debate-curtis-shapley-4_2020-1365px.jpgGreat-Debate-Curtis-Shapley-4_2020-1365pxhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/spiral-galaxy-m99-william-parsons-science-source.jpgspiral-galaxy-m99-william-parsons-science-sourcehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/03/13aa549c-e10b-44b1-9cd2-24961a7362e1_1.fe123e397f4a3d1826f56585102d2c3f-4102609219-e1678501330100.jpg13aa549c-e10b-44b1-9cd2-24961a7362e1_1.fe123e397f4a3d1826f56585102d2c3fWILLIAM PARSONS (1800-1867).3rd Earl of Rosse. Irish astronomer. Colored engraving, American 1867.2025-02-27T06:39:13+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/03/01/the-milky-way-demystified/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/img_0416.jpgimg_0416https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/new_milky_way-2.jpgnew_milky_way-22025-02-27T06:10:33+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/02/22/how-did-the-milky-way-form/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/432-crater-2-dwarf-galaxy-3d-map.webp432-crater-2-dwarf-galaxy-3d-maphttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/1-optical-image-of-the-small-magellanic-cloud-celestial-image-co.jpg1-optical-image-of-the-small-magellanic-cloud-celestial-image-cohttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/large-megallanic-cloud-from-earth-688581561-e1677121315984.jpglarge-megallanic-cloud-from-earthThis ground-based image of the Large Magellanic Cloud was taken by the German astrophotographer Eckhard Slawik. It spans 10 x 10 degrees. Just to the left of the middle of this image the largest star-forming region in the Local Group of galaxies, 30 Doradus, is seen as a red patch. N11B itself is seen in the upper right part of the LMC.ÿhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/osc_astro_25_06_cloud.jpgOSC_Astro_25_06_Cloudhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/sagittarius_collisions_trigger_star_formation_in_milky_way_article.jpgSagittarius_collisions_trigger_star_formation_in_Milky_Way_articlehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/galaxy_formation-1.jpggalaxy_formationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/galaxy_formation-4025798363-e1677119082376.jpggalaxy_formationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/theoriginoft.jpgtheoriginofthttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/sombrerogalaxym104.jpgSombreroGalaxyM104https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/maxresdefault.jpgmaxresdefault2025-05-23T08:24:39+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/02/16/the-composition-of-the-milky-way/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/milkywaystructurecropped.jpgMilkyWayStructureCroppedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/fraunhofer_lines-580x308-1.jpgfraunhofer_lines-580x308https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-13.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/what-are-the-three-basic-types-of-spectra-l.jpgwhat-are-the-three-basic-types-of-spectra-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/8823609_f520.gif8823609_f520https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/solar_spectra_graph.jpgsolar_spectra_graphhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/rvs-spectrum-of-the-metal-poor-star-hd-122563-which-has-a-metallicity-fe-h-264-dex.pngRVS-spectrum-of-the-metal-poor-star-HD-122563-which-has-a-metallicity-Fe-H-264-dexhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-12.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-11.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-10.jpgth2025-02-27T06:02:02+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/02/06/exploring-the-milky-ways-nucleus/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/s5-milky-way-halo.jpgS5 - Milky Way Halohttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/astronomers-just-saw-a-monster-black-hole-do-something-shocking.webpastronomers-just-saw-a-monster-black-hole-do-something-shockinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-3.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/sg4.jpgSG4https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/sgra_epoch1_rgb_lo.jpgSgra_epoch1_RGB_lohttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-2.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/th-1.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/star-forming-region-called-w5.webpstar-forming-region-called-W5https://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/8473404777fac64a08920a871a35ebde-subaru-telescope-eagle-nebula.jpg8473404777fac64a08920a871a35ebde--subaru-telescope-eagle-nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/02/sagittarius-constellation-baades-window-and-the-teapot.webpSagittarius-constellation-Baades-Window-and-the-Teapot2025-02-27T06:00:17+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/02/01/what-are-spiral-arms/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/slide_9.webpslide_9https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/self-sustaining-star-formation-l.jpgself-sustaining-star-formation-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/flocculent-spiral-galaxy-ngc-3521-science-source.jpgflocculent-spiral-galaxy-ngc-3521-science-sourcehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/274fa5cfbcb1be828a52c66f919e5e13.jpg274fa5cfbcb1be828a52c66f919e5e13https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/slide1-n.jpgslide1-nhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/figure25-21.jpgfigure25-21https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/new-hubble-image-of-galaxy-ngc-3344.webpNew-Hubble-Image-of-Galaxy-NGC-3344https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/image059.pngimage059https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/density-waves-l.jpgdensity-waves-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/th-3.jpgth2025-02-27T05:54:38+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/01/25/exploring-the-milky-ways-spiral-arms/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/spiral-tracers.gifspiral-tracershttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/radio-maps-of-spiral-arms-l.jpgradio-maps-of-spiral-arms-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/21-map-of-spiral-arms-l.jpg21-map-of-spiral-arms-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/spiral-galaxies-a-m-51-credit-hubble-space-telescope-wfpc2-b-ngc-1232-credit.pngspiral-galaxies-a-m-51-credit-hubble-space-telescope-wfpc2-b-ngc-1232-credithttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/6592_fig18_21.jpg6592_fig18_21https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/carbon-monoxide-molecular-clouds.jpgcarbon-monoxide-molecular-cloudshttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/slide36-l.jpgslide36-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/massive-stars-engines-of-creation-scaled-1.webpmassive-stars-engines-of-creation-scaled-1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/exploring-the-structure-of-the-milky-way-with-o-b-associations-n.jpgexploring-the-structure-of-the-milky-way-with-o-b-associations-nhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/young-stars-milky-way-e1433529533593.jpgyoung-stars-milky-way-e14335295335932025-02-27T05:51:19+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/01/18/how-massive-is-the-milky-way/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/rotation-curve-dark-matter1.jpgrotation-curve-dark-matter1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/osc_astro_28_04_rotatncrv.jpgosc_astro_28_04_rotatncrvhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/millky-way-rotation-curve-dark-matter.jpgmillky-way-rotation-curve-dark-matterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/rotation-curve-dark-matter.jpgrotation-curve-dark-matterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/galaxy-rotation-curve.jpggalaxy-rotation-curvehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/sun-orbit-around-milky-way.jpgsun-orbit-around-milky-wayhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/spurrotation.jpgA Roadmap to the Milky Way (Annotated)A Roadmap to the Milky Way (Annotated)https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/figure-6.webpfigure-6https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/istock_000055456444_large.jpgAstronaut in outer spaceAstronaut in outer space against the backdrop of the planet earth. Elements of this image furnished by NASA.https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/cosmonaut-weightlessness-space-suit-1920-x-1060.jpgcosmonaut-weightlessness-space-suit-1920-x-10602025-02-27T05:49:38+00:00monthlyhttps://cosmosatyourdoorstep.com/2023/01/11/structure-of-the-milky-way/https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/osc_astro_25_05_orbits.jpgosc_astro_25_05_orbitshttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/2780263427_dc465a9506_b.jpg2780263427_dc465a9506_bhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/8a1a22d6ce9b9fba51ca47d15f40856b.jpg8a1a22d6ce9b9fba51ca47d15f40856bhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/milky-way-galaxy-structure.jpgmilky-way-galaxy-structurehttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/crown-of-scorpius-stellarium-768x546-1.pngcrown-of-scorpius-stellarium-768x546-1https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/m45.jpg.05aec257457ae2e28dc95852b58df0e4.jpgm45.jpg.05aec257457ae2e28dc95852b58df0e4https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/5f308632c5ab098f774d70707b733d70.jpg5f308632c5ab098f774d70707b733d70https://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/schematic_view_milky_way_galaxy.jpgschematic_view_milky_way_galaxyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2023/01/milky-way-galaxy-alfred-pasieka.jpgmilky-way-galaxy-alfred-pasieka2025-02-27T05:47:54+00:00monthlyhttps://cosmosatyourdoorstep.com/2022/12/16/how-big-is-the-milky-way/https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/spur-1.jpgA Roadmap to the Milky Way (Annotated)A Roadmap to the Milky Way (Annotated)https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/hubble-deep-field-north.jpgThe Hubble Deep FieldSeveral hundred never before seen galaxies are visible in this 'deepest-ever' view of the universe, called the Hubble Deep Field (HDF), made with the Hubble Space Telescope. Besides the classical spiral and elliptical shaped galaxies, there is a bewildering variety of other galaxy shapes and colours that are important clues to understanding the evolution of the universe. Some of the galaxies may have formed less that one billion years after the Big Bang.https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/sg.gifsghttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/shapley_glob.jpgshapley_globhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/globular-cluster-ngc-6388-observed-by-hubble.jpgThe globular cluster NGC 6388, observed by HubbleThis image from the NASA/ESA Hubble Space Telescope shows NGC 6388, a dynamically middle-aged globular cluster in the Milky Way. While the cluster formed in the distant past (like all globular clusters, it is over ten billion years old), a study of the distribution of bright blue stars within the cluster shows that it has aged at a moderate speed, and its heaviest stars are in the process of migrating to the centre. A new study using Hubble data has discovered that globular clusters of the same age can have dramatically different distributions of blue straggler stars within them, suggesting that clusters can age at substantially different rates.https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/harlowshapley.jpgharlowshapleyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/delta-cephei-1.jpgdelta-cephei-1https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/star-brightest-cep-delta.jpgstar-brightest-cep-deltahttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/16-13.jpg16-13https://cosmosatyourdoorstep.com/wp-content/uploads/2022/12/spur.jpgspur2025-02-27T05:46:29+00:00monthlyhttps://cosmosatyourdoorstep.com/2022/11/29/discovery-of-the-milky-way/https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/william-herschels-model-for-our-galaxy-based-upon-a-count-of-stars-with-the-assumption.jpgwilliam-herschels-model-for-our-galaxy-based-upon-a-count-of-stars-with-the-assumptionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/grindstone.jpggrindstonehttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/galileo.jpggalileohttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/milky-way.jpgmilky-way2025-02-27T05:44:36+00:00monthlyhttps://cosmosatyourdoorstep.com/2022/11/23/how-deep-sky-catalogs-work/https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/1208-70-01n.jpg1208-70-01nhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/ngc1788_1647x1035.jpgngc1788_1647x1035https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/messier-marathon-2019.pngmessier-marathon-2019https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/william_herschel-e1598449970556-1280x640-1.jpg98,Sir William Herschel,by Lemuel Francis Abbottby Lemuel Francis Abbott,painting,1785https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/ngc4189wide.jpgngc4189widehttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/m13_mtm.jpgm13_mtmhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/5yc8lkavmt431.webp5yc8lkavmt4312025-02-27T05:42:52+00:00monthlyhttps://cosmosatyourdoorstep.com/2022/11/21/stellar-evolution-demystified/https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/massive-star-evolution.jpgmassive-star-evolutionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/image-47.jpgimage-47https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/scientists-found-ultra-rare-black-hole-billion-years.jpgscientists-found-ultra-rare-black-hole-billion-yearshttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/a_stellar_black_hole_can_be_seen_when_it_rips_a_companion_star_to_pieces_pillars.jpga_stellar_black_hole_can_be_seen_when_it_rips_a_companion_star_to_pieces_pillarshttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/895843-amazing-crab-nebula-wallpaper-1920x1200-1.jpgMotorcycle DetailsSeen on allwallpapersfree.blogspot.comhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/white-dwarf.jpgwhite-dwarfhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/ring-nebula-wallpaper-hd-05.jpgRing Nebula Wallpaper HDRing Nebula Wallpaper HDhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/massive-star.jpgThe sizes of stars (annotated)Using a combination of instruments on ESO’s Very Large Telescope, astronomers have discovered the most massive stars to date, some weighing at birth more than 300 times the mass of the Sun, or twice as much as the currently accepted limit of 150 solar masses. This artist's impression shows the relative sizes of young stars, from the smallest “red dwarfs”, weighing in at about 0.1 solar masses, through low mass “yellow dwarfs” such as the Sun, to massive “blue dwarf” stars weighing eight times more than the Sun, as well as the 300 solar mass star named R136a1.https://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/massive-star-interior.gifmassive-star-interiorhttps://cosmosatyourdoorstep.com/wp-content/uploads/2022/11/oip.jpgoip2025-02-27T05:08:26+00:00monthlyhttps://cosmosatyourdoorstep.com/2022/08/17/how-to-find-a-black-hole/https://cosmosatyourdoorstep.com/wp-content/uploads/2022/08/jpegpia18845.width-1024.jpgjpegpia18845.width-1024https://cosmosatyourdoorstep.com/wp-content/uploads/2022/08/r.jpgr2025-02-27T04:56:41+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/18/black-holes-what-the-movies-get-wrong/2025-02-27T04:54:26+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/15/what-is-a-black-hole-really/2025-02-27T04:51:37+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/11/unique-neutron-stars/2025-02-27T04:49:47+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/08/binary-neutron-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2021/02/fig2-2.jpgfig2-22025-02-27T04:47:45+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/04/pulsars-as-neutron-stars/2025-02-27T04:44:03+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/02/01/what-is-a-pulsar/2025-02-27T04:42:14+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/28/why-neutron-stars-should-exist/2025-02-27T04:40:19+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/25/what-exactly-are-supernovae/2025-02-27T03:36:36+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/21/how-massive-stars-die/2025-02-27T03:34:37+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/18/what-about-binary-systems/2025-02-27T03:32:59+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/14/what-are-white-dwarfs/2025-02-27T03:31:50+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/11/what-are-planetary-nebulae/2025-02-27T03:29:59+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/07/how-low-mass-stars-die/2025-02-27T03:27:54+00:00monthlyhttps://cosmosatyourdoorstep.com/2021/01/04/what-are-variable-stars/2025-02-27T03:16:35+00:00monthlyhttps://cosmosatyourdoorstep.com/2020/12/31/story-of-a-star-cluster/2025-02-27T03:13:08+00:00monthlyhttps://cosmosatyourdoorstep.com/2020/10/19/what-happens-after-helium-fusion/2025-02-27T03:06:31+00:00monthlyhttps://cosmosatyourdoorstep.com/2020/08/24/helium-ignition-in-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2020/08/3_rednasa.jpg3_RedNASAhttps://cosmosatyourdoorstep.com/wp-content/uploads/2020/08/an-artists-rendition-of-an-expanding-giant-star-with-a-1.pngan-artists-rendition-of-an-expanding-giant-star-with-ahttps://cosmosatyourdoorstep.com/wp-content/uploads/2020/08/an-artists-rendition-of-an-expanding-giant-star-with-a.pnghelium fusion (AI image)https://cosmosatyourdoorstep.com/wp-content/uploads/2020/08/image-1.webpimage-12025-02-27T02:52:28+00:00monthlyhttps://cosmosatyourdoorstep.com/2020/04/06/what-happens-in-an-expanding-stars-core/https://cosmosatyourdoorstep.com/wp-content/uploads/2020/04/maxresdefault.jpgmaxresdefault2025-02-27T02:34:31+00:00monthlyhttps://cosmosatyourdoorstep.com/2020/04/02/how-a-star-expands/https://cosmosatyourdoorstep.com/wp-content/uploads/2020/04/leavingthemainsequence-e1585447884928.jpgLeaving+the+Main+Sequencehttps://cosmosatyourdoorstep.com/wp-content/uploads/2020/04/hshellburningsml-e1585446153980.jpghshellburningsml2025-02-27T02:28:44+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/12/23/the-adult-life-of-a-star/https://cosmosatyourdoorstep.com/wp-content/uploads/2019/12/brief-video-lesson-hr-diagram-the-main-sequence-13.jpgMicrosoft PowerPoint - BRIEF Video Lesson - HR DIAGRAM - The Maihttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/12/main-sequence-star-1024x683-1.pngmain-sequence-star-1024x6832025-02-27T02:14:35+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/12/19/stars-the-limits-of-normal/2025-02-27T02:07:37+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/12/16/what-is-a-normal-star/2025-02-27T02:03:22+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/11/11/what-goes-on-inside-a-star/2025-02-27T01:09:28+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/04/29/what-keeps-a-star-stable/https://cosmosatyourdoorstep.com/wp-content/uploads/2019/04/qbbks3jvs78mxbqsckpxmc.jpgQBBks3Jvs78MxbqsCKpxmchttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/hydrostaticequilibrium-1.gifhydrostaticEquilibriumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/hydrostaticequilibrium.gifhydrostaticEquilibriumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/stars_pressuretempeature.jpgstars_pressureTempeaturehttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/stars_pressuretempgas-e1556500024194.jpgstars_pressureTempGashttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/stars_hydrostaticequilibrium.jpgstars_hydrostaticEquilibriumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/stars_layerslikeonion.jpgstars_layersLikeOnionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/animal_star.jpganimal_starhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/hydrostaticequilibriumii.jpgHydrostatic+Equilibrium+(II)Outward pressure force must exactly balance the weight of all layers above, everywhere in the star. This is why we find stable stars on such a narrow strip (main sequence) in the Hertzsprung-Russell diagram. Pressure-temperature thermostat. Q: How does the P-T thermostat control the reactions in stars?https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/gettyimages-162255694-1024x1024-e1549527631871.jpgRed onions cross section on cutting board with knife2025-02-27T01:06:16+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/02/07/observations-of-star-birth/https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/image_12269e-hh-211.jpgimage_12269e-HH-211https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/orion852.jpgorion852https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/2017-10-29_59f65802730e3_doublecluster.jpg2017-10-29_59f65802730e3_DoubleClusterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/sundog_jan2019_9373.jpgsundog_jan2019_9373https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/img_0083.jpgIMG_0083https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/galactic-herbig-haro.jpggalactic herbig harohttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/img_0082-e1549413057557.pngIMG_0082https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/vdb142-eso-l.jpgVDB142-ESO-Lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/22383499515_7cd6dfd7eb_b.jpg22383499515_7cd6dfd7eb_bhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/12611629febde58c717621e8049e3bc1.jpg12611629febde58c717621e8049e3bc12025-02-27T00:59:20+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/02/05/the-story-of-a-newborn-star/https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/artists-impression-of-a-protostellar-disk-around-a-forming-star-the-disk-will.png.jpegPlanet-Forming Disk Around a Baby StarThis artist's concept shows a young star surrounded by a dusty protoplanetary disk. This disk contains the raw material that can form planets as the star system matures. Even in the closest star-forming regions, such disks are tiny and difficult to observe directly, but their strong infrared glow can easily be seen by the detectors on the Spitzer Space Telescope.https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/at_7e_figure_20_11.jpgAT_7e_Figure_20_11https://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/f0902-ysotrack.jpgf0902-YSOtrackhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/evoltrack.jpgevoltrackhttps://cosmosatyourdoorstep.com/wp-content/uploads/2019/02/20170620-alma-baby-star-3421pco7ab8bqwpfd29mgw.jpg20170620-ALMA-baby-star-3421pco7ab8bqwpfd29mgw2025-02-27T00:54:39+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/02/03/what-is-contagious-star-formation/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/m20_trifid_nebula_from_the_mount_lemmon_skycenter_schulman_telescope_courtesy_adam_block-e1472727293262.jpgM20_Trifid_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block-e1472727293262https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/the-horsehead-nebula.jpgThe-Horsehead-Nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/ahr0cdovl3d3dy5zcgfjzs5jb20vaw1hz2vzl2kvmdawlza2oc8zmjqvb3jpz2luywwvb3jpb24tbmvidwxhlmpwzw.jpegThe Orion Nebula and cluster from the VLT Survey TelescopeOmegaCAM — the wide-field optical camera on ESO’s VLT Survey Telescope (VST) — has captured the spectacular Orion Nebula and its associated cluster of young stars in great detail,  producing this beautiful new image. This famous object, the birthplace of many massive stars, is one of the closest stellar nurseries, at a distance of about 1350 light-years.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/slide_9.jpgslide_92025-02-27T00:51:43+00:00monthlyhttps://cosmosatyourdoorstep.com/2019/01/27/the-orion-nebula-a-stellar-nursery/https://cosmosatyourdoorstep.com/wp-content/uploads/2019/01/0hvawnf8l9o21.jpg0hvawnf8l9o21https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/orion_4min_28mm_800iso_jtfeb_1000w.jpgorion_4min_28mm_800iso_jtfeb_1000whttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/spectraltypesofthetrapeziumstars-e1548471540955.jpgspectral+types+of+the+trapezium+starshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/hstorionprops.jpghstorionpropshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/trapezium-cluster.jpgtrapezium-clusterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/finder.jpgfinderhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/pia08656_hires.jpgpia08656_hireshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/orion-nebula.jpgorion-nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/6630942315_afa9f9b88a_b.jpg6630942315_afa9f9b88a_bhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/p01m7ncm.jpgp01m7ncm2025-02-27T00:49:49+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/12/22/from-cold-cloud-to-hot-protostar/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/emiss.gifemisshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/20150930-yokohama-protostellar-discs-2-638-1.jpg20150930-yokohama-protostellar-discs-2-638https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/20150930-yokohama-protostellar-discs-2-638-e1545266142888.jpg20150930-yokohama-protostellar-discs-2-638https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/unknown-e1576009839774.jpegUnknownhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/Potential-and-kinetic-energy20161011-31879-1fyjqa9.jpgPotential-and-kinetic-energy20161011-31879-1fyjqa9https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/ngc3582_noao_big.jpgngc3582_noao_big2025-02-27T00:45:44+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/12/20/how-are-stars-born/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/Astronomers-Take-a-First-Glimpse-at-the-Birth-of-a-Triple-Star-System.jpgAstronomers-Take-a-First-Glimpse-at-the-Birth-of-a-Triple-Star-Systemhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/milky_way.jpgmilky_wayhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/chngehueGettyImages-85757442ps-5eba680.jpgchngehueGettyImages-85757442ps-5eba680https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/Praxis_exploding.jpgPraxis_explodinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/684082262.jpg684082262https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/7975196.jpg7975196https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/slide_8.jpgslide_8https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/out-there-starisborn-superJumbo.jpgout-there-starisborn-superJumbo2025-02-26T23:56:04+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/12/18/where-did-the-interstellar-medium-come-from/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/Zeta_Oph_Runaway_Star.jpgconverted PNM fileconverted PNM filehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/aori_H.jpgaori_Hhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/lcs-uss-milwaukee-front-bow-waves-us-navy-photo-cropped-09182015.jpglcs-uss-milwaukee-front-bow-waves-us-navy-photo-cropped-09182015https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/tmp698101762753560578.jpgtmp698101762753560578https://cosmosatyourdoorstep.com/wp-content/uploads/2018/12/m17x800ignacio.jpgm17x800ignacio2025-02-26T06:01:47+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/12/16/what-is-coronal-gas/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/spaceclouds-e1544916608732.pngspacecloudshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/crab-nebula.jpgMost detailed image of the Crab Nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/planets_under_a_red_sun-800x533.jpgplanets_under_a_red_sun-800x5332025-02-26T05:58:56+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/10/02/what-are-molecular-clouds/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/10/opo9734m.jpgEagle Nebula with a representation of a giant molecular cloudShown here HST image of Eagle Nebula with part of its associated GMC. Since molecular hydrogen gas can only be observed by radio technique, contour lines are here used to show where the optically invisible hydrogen gas lies. The manner in which GMCs form stars may strongly depend on environment. In Milky Way, stars form slowly, soon disrupt and disperse molecular gas around them, as seen here in Eagle Nebula. In merging galaxies experiencing vast bursts of star formation, the fate of a GMCs may be quite different. As tenuous gas surrounding these clumps of dense molecular gas heast up, GMCs may get crunched and triggered into rapidly forming stars. The process may be so rapid that the new stars do not have time to disrupt the GMCs before nearly all the gas is used up. The result is that GMCs may turn into rich star clusters that evolve into globular clusters.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/10/250px-ngc_281hstfull.jpg250px-NGC_281HSTFullhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/10/m16location.jpgM16Locationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/10/maxresdefault.jpgmaxresdefault2025-02-26T05:55:20+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/08/19/what-is-the-intercloud-medium/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/08/aa96454bd912f352c78e4e9568ab5d48.jpgaa96454bd912f352c78e4e9568ab5d48https://cosmosatyourdoorstep.com/wp-content/uploads/2018/08/ionization.jpgionization2025-02-26T05:50:46+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/07/21/what-are-cool-clouds/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image5.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image4.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image3.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image2.pngimage2025-02-26T05:47:57+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/07/19/the-galaxys-backstage/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image1.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/image.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image8.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image7.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image6-e1531362711890.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image5.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image4-e1531362295550.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image3.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/image2.pngimage2025-02-26T05:45:24+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/07/17/interstellar-spectra/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/07/etacarina2.jpgetacarina2https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image18.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image17.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image16.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image15.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image14.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image13.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image12.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image11.pngimage2025-02-26T05:40:28+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/07/15/extinction-and-reddening-of-starlight/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image10.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image9.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image8.pngext and redhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image7.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image6.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image5.pngimage2025-02-26T05:35:50+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/06/18/what-is-a-nebula-made-of/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/image5.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/image4.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/image3-e1530145542147.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/image2.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/image.pngimage2025-02-26T05:27:08+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/06/14/what-is-a-nebula/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image4.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/stocktrek-images-nebuleuse-de-la-tete-de-cheval_a-g-2637060-4990619.jpgstocktrek-images-nebuleuse-de-la-tete-de-cheval_a-G-2637060-4990619https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image3.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/emissionabsorption.jpgemission:absorptionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/emission-spectrum.pngemission spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/backyard_photo_of_the_orion_nebula1.jpgOrionOrionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/m8_rural_hiresbobillo.jpgM8_rural_hiresBobillohttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/electromagnetic-spectrum.jpgelectromagnetic spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/the-trifid-nebula-by-r-jay-gabany.jpgThe-Trifid-Nebula-by-R.-Jay-GaBanyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image2.pngimage2025-02-26T05:24:47+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/06/13/star-mass-and-density/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/8-image1.jpg8-image(1)https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/hrevolutionary.jpghrevolutionaryhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/golf-ball-spin-on-white-background_rfgkhki3m__f00001-e1528080188660.pnggolf-ball-spin-on-white-background_rfgkhki3m__F0000https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/tr14916-plastic-ping-pong-balls1.jpgTR14916-Plastic-Ping-Pong-Ballshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/golf-ball-spin-on-white-background_rfgkhki3m__f0000.pnggolf-ball-spin-on-white-background_rfgkhki3m__F0000https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/tr14916-plastic-ping-pong-balls.jpgTR14916-Plastic-Ping-Pong-Ballshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/bright-stars-in-space-4k-wallpaper-e1528079400642.jpgBright-Stars-in-Space-4K-Wallpaper2025-04-05T08:08:06+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/06/12/the-average-star/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/acensusofthestarsfaintreddwarfslowmassarethemostcommonstars-e1528074658877.jpghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/images.jpegimageshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/orion-context-v2-e1528074324359.jpgOrion-Context-v2https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/surveysofstarsidealsituationforcreatingacensusofthestars-determinepropertiesofallstarswithinacertainvolume.jpgSurveys+of+Stars+Ideal+situation+for+creating+a+census+of+the+stars-+determine+properties+of+all+stars+within+a+certain+volume.1a. You could survey the stars by observing every star within 62 pc of Earth. A sphere 62 pc in radius. encloses a million cubic parsecs. Such a survey would tell you how many stars of each type are found. within a volume of a million cubic parsecs.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/solar_system_poster.jpgsolar_system_posterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/image.pngimage2025-02-26T05:01:39+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/06/11/eclipsing-binary-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/eclipsing-binary-illustration-scaled-1.jpgEclipsing-Binary-Illustration-scaledhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/06/binary_in_globular_cluster_v2_preview.jpgbinary_in_globular_cluster_v2_previewhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/maxresdefault1.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/maxresdefault.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/ceafb739be6322649c8875ba91817af4-e1528081190976.jpgceafb739be6322649c8875ba91817af4https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/550px-nowatermark-throw-a-frisbee-step-5-version-4.jpg550px-nowatermark-Throw-a-Frisbee-Step-5-Version-4https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/eclipsingbin.jpgeclipsingbin2025-02-26T04:57:35+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/11/spectroscopic-binary-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/binary-star-system-artwork-david-ducros.jpgbinary-star-system-artwork-david-ducroshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/algol-binary-star-mark-garlickscience-photo-library.jpgalgol-binary-star-mark-garlickscience-photo-libraryhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/screen-shot-2018-05-05-at-11-09-46-pm.pngScreen Shot 2018-05-05 at 11.09.46 PMhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image16.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/araur_sbfit.jpgaraur_sbfithttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/u5dt3ryla7pxeg82awp2keddejk4bn7.gifU5dt3rYLA7PXEg82AWp2KEDdejK4BN7https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/spectroscopicbinaries-e1525585145449.jpgSpectroscopic+Binarieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/screen-shot-2018-05-05-at-10-36-33-pm1-e1525585059911.pngScreen Shot 2018-05-05 at 10.36.33 PMhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/screen-shot-2018-05-05-at-10-36-33-pm-e1525585046249.pngScreen Shot 2018-05-05 at 10.36.33 PMhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/specbinary-e1525584674555.jpgspecbinary2025-02-26T04:54:26+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/10/visual-binary-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/unknown.jpegUnknownhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image15.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/osc_astro_18_02_period.jpgOSC_Astro_18_02_Periodhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image14.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/sirius-b-fabio-v2.jpgSirius-B-Fabio-v22025-02-26T04:51:10+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/09/binary-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image13-e1525563061712.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image12.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image11.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image10-e1525562049363.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image9.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/nova-centauri-1.jpgNova-Centauri-1https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image8.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image7.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image6.pngimage2025-02-26T04:47:25+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/08/star-types-demystified/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/xxrx5guss4651.webpxxrx5guss4651https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/hrlumdiag.gifhrlumdiaghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/opo0505b.jpgA Comparison of Star SizesThis illustration compares the different masses of stars. The lightest-weight stars are red dwarfs. They can be as small as one-twelfth the mass of our Sun. The heaviest-weight stars are blue-white super giants. They may get as large as 150 solar masses. Our Sun is between the lightweight and heavyweight stars. The red giant star at the bottom of the graphic is much larger than the other stars in the illustration. Its mass, however, can range from a fraction of the Sun's mass to a few solar masses. A red giant is a bloated star near the end of its life. In this brief phase, a star's diameter expands to several times its normal girth.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/absolute-magnitude-e1525425844405.jpgabsolute magnitudehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/apparent-visual-magnitude-scale.jpgapparent visual magnitude scalehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image5.pngimage2025-02-26T04:44:50+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/07/what-makes-a-star-blue/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/blackbody-curve.gifblackbody curvehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/redshift.pngredshifthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/starspectrumandgraph.jpgstarspectrumandgraphhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/electromagnetic-spectrum.jpgelectromagnetic spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/redshift-blueshift.jpgredshift blueshifthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image4.pngimage2025-02-26T04:40:08+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/04/how-far-are-the-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/hrgenericsml.jpghrgenericsmlhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/parallaxdistances.jpgparallaxdistanceshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/parallax.jpgparallaxhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/earth-about-sun.pngearth-about-sunhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image3.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/starscape_by_martianlightsaber.jpgstarscape_by_martianlightsaberhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image2.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/heic0807c.jpgWide-field view of the Summer Triangle (ground-based image)A wide field image of the region of sky in which HD 189733b is located. In this image we can see the asterism of the "Summer Triangle" a giant triangle in the sky composed of the three bright stars Vega (top left), Altair (lower middle) and Deneb (far left). HD 189733b is orbiting a star very close to the centre of the triangle.2025-02-26T04:37:31+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/05/02/star-luminosity-classes/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/stars.jpgStarshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/crowded-room.jpgcrowded roomhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/f0703-linewidth.jpgf0703-linewidthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image1.pngimage2025-02-26T04:35:41+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/04/30/just-how-big-are-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/print_eastern_summer_sky.gifprint_eastern_summer_skyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/betelgeuse-1.jpgbetelgeuse-1https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/polaris_big_dipper_little_dipper.jpgpolaris_big_dipper_little_dipperhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/jul-aug_ver5-cr.jpgJul-Aug_ver5-crhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/orbital_plot_of_proxima_centauri.jpgOrbital plot of Proxima CentauriOrbital plot of Proxima Centauri showing its position with respect to Alpha Centauri over the coming millenia (graduations are in thousands of years). The large number of background stars is due to the fact that Proxima Cen is located very close to the plane of the Milky Way.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/gallery_image_10490.jpgGallery_Image_10490https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/99161185.jpg99161185https://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/image.pngimagehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/05/sunshine-e1524871234743.jpgsunshine2025-02-26T04:32:00+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/04/27/the-h-r-diagram/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/hertzsprung-russel_stardata3.pngHertzsprung-Russel_StarDatahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/hertzsprung-russel_stardata2.pngHertzsprung-Russel_StarDatahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/superhabitable-exoplanet-18.jpgsuperhabitable-exoplanet-18https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/hertzsprung-russel_stardata1.pngHertzsprung-Russel_StarDatahttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/hertzsprung-russel_stardata.pngHertzsprung-Russel_StarData2025-02-26T04:27:50+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/04/25/how-lightning-strikes/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/maxresdefault-1.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/lightningdown1.giflightningDownhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/lightningup.giflightningUphttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/lightningdown.giflightningDownhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/lightning.giflightninghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/x3.jpgX3 / 2002-V0-17 / Pilot & Index Peaks, WYGround to Air Lightning Strike, Pilot & Index Peaks, Absaroka Range, Wyoming, June Natl. Geo. Scans 1/28/08https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/positive-lightning.jpgPositive-lightning-https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/ground-to-cloud-lightning.jpgGround-to-cloud lightninghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/lightning_3762193048-1.jpgLightning_3762193048-1https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/new-lightning-network-banner-696x348.pngNew-Lightning-Network-Banner-696x3482025-02-26T04:25:18+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/04/23/the-starlight-we-cant-see/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/obafgkm.jpgOBAFGKMhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/maxresdefault.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/apparent-visual-magnitude-scale.jpgapparent visual magnitude scalehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/earth_radiation_cartoon.jpgearth_radiation_cartoonhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/constitution_class_refit.jpgConstitution_Class_Refithttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/heic0807c.jpgWide-field view of the Summer Triangle (ground-based image)A wide field image of the region of sky in which HD 189733b is located. In this image we can see the asterism of the "Summer Triangle" a giant triangle in the sky composed of the three bright stars Vega (top left), Altair (lower middle) and Deneb (far left). HD 189733b is orbiting a star very close to the centre of the triangle.https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/planet-bearing-stars.jpgPlanet-Bearing-Stars2025-02-26T04:23:29+00:00monthlyhttps://cosmosatyourdoorstep.com/2014/09/02/where-are-we/https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/earth-in-space.jpgearth-in-spacehttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/ahr0cdovl3d3dy5saxzlc2npzw5jzs5jb20vaw1hz2vzl2kvmdawlzazmi82nzqvb3jpz2luywwvrmxhdf9lyxj0ac5qcgc.jpegaHR0cDovL3d3dy5saXZlc2NpZW5jZS5jb20vaW1hZ2VzL2kvMDAwLzAzMi82NzQvb3JpZ2luYWwvRmxhdF9lYXJ0aC5qcGc=https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/sol-orbits.gifPlanetary Orbitshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/hubble2005-01-barred-spiral-galaxy-ngc1300.jpgSpiral Galaxyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/stars.gifStarshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/planets.jpgPlanet Orbitshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/earth_from_space.jpgEarth from Spacehttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/celestial-sphere.jpgCelestial Sphere2025-02-26T04:20:11+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/03/07/what-causes-the-lunar-phases/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/r9cvljmo.pngr9cvljmohttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/20130218_earth_apollo11_crescent_6689.jpg20130218_earth_apollo11_crescent_6689https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/moon-waxing-crescent.jpgmoon-waxing-crescenthttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/waning-gibbous-moon.jpgWaning-Gibbous-Moonhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/as11365337-e1523426896775.jpgas11365337https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/images.jpegimageshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/20130218_earth_apollo11_crescent_6689-e1523426756953.jpg20130218_earth_apollo11_crescent_6689https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/p050jstg.jpgp050jstghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/1371831948000-nasaearthrise-1306211227_4_3.jpg1371831948000-nasaearthrise-1306211227_4_3https://cosmosatyourdoorstep.com/wp-content/uploads/2018/04/moon-phases.jpgmoon-phases2025-02-26T04:15:53+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/03/02/what-is-gravity-anyway/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/free-fall-l.jpgfree-fall-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/03/keplers-1st-law.jpgKeplers 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Major, Ursa Minor Copyright 1995 Jerry Lodriguss 24mm f.2 Nikkor working at f/3.5 20 minute exposure hypered Kodak Royal Gold 400 3:17 am May 27, 1995 Massai Point, AZhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/absolute-magnitude-e1519006546566.jpgabsolute magnitudehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/chapter9-11-638-e1519005679778.jpgchapter9-11-638https://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/spilled-cereal.jpgspilled cerealhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/apparent-visual-magnitude-scale.jpgapparent visual magnitude scalehttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/star-field-3.jpgstar-field-32025-02-26T02:31:23+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/02/19/stars-and-proper-motion/https://cosmosatyourdoorstep.com/wp-content/uploads/2016/01/proper-motion.jpgproper 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Geese2025-02-26T02:25:07+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/02/16/distances-between-stars/https://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/gaia.jpgGAIAhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/pia18003-full-jpg.pngpia18003-full.jpghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/parallax.gifparallaxhttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/parallaxdistances.jpgparallaxdistanceshttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/osc_astro_19_02_triang.jpgOSC_Astro_19_02_Trianghttps://cosmosatyourdoorstep.com/wp-content/uploads/2018/02/milkyway.pngmilkyway2025-02-26T02:12:43+00:00monthlyhttps://cosmosatyourdoorstep.com/2018/02/14/solar-weather/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/11/cor_hole284_1.jpgcor_hole284_1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/11/cme.jpgcmehttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/11/aurora.jpgaurorahttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/11/screen-shot-2018-02-15-at-11-31-20-pm.pngScreen 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scopehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/th.jpeg300-m Arecibo, Puerto Rico2024-10-08T05:21:40+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/09/info-in-a-rainbow/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/milky-way.jpgmilky-wayhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/spectral-lines1.jpgspectral lineshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/spectral-lines.jpgspectral lineshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/cd-grating.jpgcd gratinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/isaac-newton-prism.jpgisaac newton prismhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/star-cluster.jpgHome to a hypergiantLight travels through space at just under 300 000 kilometres per second! This staggering speed is used to calculate astronomical distances; although often misinterpreted as a unit of time (due to its misleading name), a light-year is actually a unit of astronomical distance, and is defined as the distance that light travels in a year. For reference, this is around nine trillion kilometres… but it’s a little tricky to visualise! With this in mind, 15 000 light-years may sound like a truly huge distance, but compared to the vastness of the cosmos, it’s really quite nearby. In fact, an object sitting 15 000 light-years away would not even be outside our home galaxy, the Milky Way. This is roughly the distance between us and a young super star cluster known as Westerlund 1, home to one of the largest stars ever discovered. Stars are classified according to their spectral type, surface temperature, and luminosity. While studying and classifying the cluster’s constituent stars, astronomers discovered that Westerlund 1 is home to one of the largest stars ever discovered, originally named Westerlund 1-26. It is a red supergiant (although sometimes classified as a hypergiant) with a radius over 1500 times that of our Sun. If Westerlund 1-26 were placed where our Sun is in our Solar System, it would extend out beyond the orbit of Jupiter. Most of Westerlund 1’s stars are thought to have formed in the same burst of activity, meaning that they have similar ages and compositions. The cluster is relatively young in astronomical terms — at around three million years old it is a baby compared to our own Sun, which is some 4.6 billion years old.2024-10-08T05:19:24+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/08/telescope-imaging-systems/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/sombrero-galaxy-visible.jpgsombrero-galaxy-visiblehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/horsehead-ccd.jpghorsehead CCDhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/sombrero-false-color.jpgIDL TIFF fileIDL TIFF filehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/evolution-phone.jpgevolution-phonehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/n891block3-e1507525117494.jpghttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/ngc8911.jpgNGC891https://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/sombrero-galaxy-visible.jpgsombrero galaxy visiblehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/milky-way.jpgmilky wayhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/comparison_spectra2.jpgComparison Spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/spectrometer-sketch.jpgGrating (spectrograph)2024-10-08T05:14:54+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/07/interferometry/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/laser_interference.jpgLaser_Interferencehttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/pw-2016-09-02-cartlidge-quantum.jpgPW-2016-09-02-Cartlidge-quantumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/bright-light-cave.jpgbright light cavehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/dim-light-cave.jpgdim light cavehttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/interferometer-en.gifInterferometry2024-10-08T05:12:56+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/06/a-telescope-tour/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/finder-scope-e1507274692790.jpgfinder scopehttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/telrad.jpgtelradhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/laser-finder-e1507274254271.jpglaser finderhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/refractor-accessories-e1507274091394.pngrefractor accessorieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/accessories.pngaccessorieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/accessories.jpgaccessorieshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/skywatcher_explorer_130p_az_goto.jpgskywatcher_explorer_130P_AZ_GOTOhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/cassegrain-copy.pngcassegrain copyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/equatorial-mount.pngequatorial mounthttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/schmidt-cassegrain-tube.pngschmidt-cassegrain tube2024-10-08T05:04:45+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/05/improved-telescope-mounting/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/mount-1.jpgmounthttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/celestial-sphere-2.jpgcelestial-sphere-2https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/alt-az-vs-eq-mounts.gifalt-az-vs-eq-mountshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/equatorialcs-e1507202572913.jpgfrontpageshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/celestial-sphere-e1490684665845.jpgcelestial-sphere-e1490684665845https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/equatorial-diagram.pngequatorial diagramhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/mount.jpgmount2024-10-08T05:02:57+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/04/improved-telescope-mirrors/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/hammock1-e1507083870135.jpghammockhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/hammock.jpghammockhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/elt.jpgELThttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lbt2.jpglbt2https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/vlt.jpgVLThttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/segmented-mirror-in-action.jpgThe Keck II Mirror on the summit of Mauna Kea, Island of Hawai‘i0750c_KeckII_Mirror © 2007 Laurie Hatch, image and text - Keck Observatory - Mauna Kea Summit, Island of Hawai‘i - 2007 Jan 29 - The twin Keck 10-meter mirrors are foremost among the world’s optical telescopes. Each is comprised of 36 hexagonal mirror segments placed edge-to-edge to form a continuous light-collecting surface of 76 square meters. This provides unprecedented sensitivity for observing celestial objects near and far. Shown here is a bird’s-eye view, close to the Keck II 1.4-meter secondary mirror housing at the top of the telescope and looking far down onto the primary mirror—a distance of 24.5 meters. The dome above is open and tropical blue daylight is reflected in the mirror. Note the technician’s tiny reflection in the lowermost 1.8-meter hexagonal segment and compare it to the gargantuan reflector. - The photographer thanks the astronomers and Keck and VIS staffs for their invaluable assistance in producing this photograph. - A VIEW FROM MAUNA KEA, SACRED MOUNTAIN OF HAWAI‘I - Mauna Kea holds profound religious and cultural significance for Native Hawaiians. It embodies their divine ancestral origins and connection to Creation. At 13,796 feet / 4,205 meters in elevation on the Island of Hawai‘i, it last erupted about 4400 years ago. The now-dormant volcano is only 120 feet higher than its active neighbor Mauna Loa 27 miles to the south. Seen from below and framed by palm trees and azure waters, the snow-cloaked summit of Mauna Kea inspires awe and veneration—its Hawaiian name means “White Mountain”. The star-filled sky above offers unsurpassed clarity for some of the world’s most advanced telescopes as they unravel mysteries of the universe. Upon its flanks are hallowed Hawaiian sites, ancient paths, rare plants and animals, and a unique and fragile ecosystem. Please walk gently and respectfully on Mauna O Wakea, the Sacred Mountain of Hawai‘i. - Exposure data: Nikon D2x Nikkor 18-200 DX f/3.5-f5.6 zoom lens ISO dihttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/mirrors-in-progress.jpgmirrors in progresshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/segmentedmirrors-e1507019549198.jpgSegmented Mirrorshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/floppymirrors-e1507018873411.jpghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/e-elt.jpgESO Signs Largest Ever Ground-based Astronomy Contract for E-ELT2024-10-08T05:01:24+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/03/improved-reflecting-telescopes/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/maxresdefault.jpgmaxresdefaulthttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/schcassoptics.jpgSchCassOpticshttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/large-cassegrain.jpglarge cassegrainhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/cassegrain-focus-e1507015649216.pngCassegrain focushttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/25-inch-reflector.jpg25-inch reflectorhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/cassegrain.jpgcassegrainhttps://cosmosatyourdoorstep.com/wp-content/uploads/2015/01/newtonian-e1507269612382.jpgnewtonianhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/lbt_gr.gifLBT Telescopehttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/vlt.jpgVLT Telescopeshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/gemn2.jpgGemini 22024-10-08T04:59:08+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/02/light-pollution/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/1566236847133.webp1566236847133https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/new-york-light-pollution.jpgnew-york-light-pollutionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lightpoll_32-e1506934927747.pnglightPoll_32https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lightpoll_22-e1506934878890.pnglightPoll_22https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lightpoll_12-e1506934827600.pnglightPoll_12https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/broken-beach-fence-stock-image-936175.jpgbroken-beach-fence-stock-image-936175https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/spaced-picket-fence-1024x574.jpgspaced-picket-fence-1024x574https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lightpoll_3-e1506933249793.jpglightPoll_3https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/find-lighting.jpgfind-lightinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/lightpoll_2-e1506932540189.jpglightPoll_22024-10-08T04:55:36+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/10/01/telescope-powers/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/10/e-elt-1.jpgESO Signs Largest Ever Ground-based Astronomy Contract for E-ELTAt a ceremony in Garching bei München, Germany on 25 May 2016, ESO signed the contract with the ACe Consortium, consisting of Astaldi, Cimolai and the nominated sub-contractor EIE Group for the dome and telescope structure of the European Extremely Large Telescope (E-ELT). This is the largest contract ever awarded by ESO and the largest ever contract in ground-based astronomy. At this occasion the construction design of the E-ELT was unveiled. This artist’s rendering of the E-ELT is based on the detailed construction design for the telescope.https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/usa-light-pollution.jpgusa light pollutionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/new-york-light-pollution.jpgnew york light pollutionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/pixels-magnified-e1506593100167.jpgpixels magnifiedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/jupiter-poor-seeing-e1506591825635.pngJupiter poor seeinghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/jupiter-e1506591798546.jpgJupiterhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/sun1.jpgsun1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/double-stars-rayleigh-limit-st1-e1506590855838.jpgDouble-stars-Rayleigh-limit-SThttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/double-stars-rayleigh-limit-st-e1506590770327.jpgDouble-stars-Rayleigh-limit-SThttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/e-elt.jpgESO Signs Largest Ever Ground-based Astronomy Contract for E-ELTAt a ceremony in Garching bei München, Germany on 25 May 2016, ESO signed the contract with the ACe Consortium, consisting of Astaldi, Cimolai and the nominated sub-contractor EIE Group for the dome and telescope structure of the European Extremely Large Telescope (E-ELT). This is the largest contract ever awarded by ESO and the largest ever contract in ground-based astronomy. At this occasion the construction design of the E-ELT was unveiled. This artist’s rendering of the E-ELT is based on the detailed construction design for the telescope.2024-10-08T04:52:04+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/30/refracting-reflecting-telescopes/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/telescopes-testing-lowres-3712.jpgtelescopes-testing-lowres-3712https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/moon-chromatic-aberration-e1506583971498.jpgmoon chromatic aberrationhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/chromatic_aberration_lens_diagram-e1506583791206.pngChromatic_aberration_lens_diagramhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/reflector1.jpgreflectorhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/cat-reflecting-off-mirror.gifcat reflecting off mirrorhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/cat-in-mirror.jpgcat in mirrorhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/refractordiagram.jpgRefractorDiagramhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/light_dispersion_conceptual_waves350px.gifLight_dispersion_conceptual_waves350pxhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/telescopes-testing-lowres-3712.jpgtelescopes-testing-lowres-3712https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/refractor1-e1298072746798.jpgRefracting Telescope2024-10-08T04:50:32+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/29/the-spectrum-of-light/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/colored-rainbow-over-forest-mountains.webpcolored-rainbow-over-forest-mountainshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/rainbow-stretching-hilly-forest-mountains-638x0_q80_crop-smart-1.jpgrainbow-stretching-hilly-forest-mountains-638x0_q80_crop-smarthttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/x-rays.jpgx-rayshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/wavelengths-of-light.jpgWavelengths-of-Lighthttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/astronauts.pngastronautshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/electromagnetic-spectrum.jpgelectromagnetic spectrumhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/light-prism-refracted.giflight prism refractedhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/light-waves.jpglight waveshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/wavy-e1506499715952.jpgwavyhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/waves.jpgwaves2024-10-08T04:48:28+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/28/einstein-space-time-curvature/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/1000_f_484306188_nk7q2c6sbjimen6gjxzwhmxgrw8j83c3.jpg1000_F_484306188_Nk7Q2C6sBJiMEN6GJXzwhMxGrw8J83c3https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/istockphoto-899007920-612x612-1.jpgistockphoto-899007920-612x6123D illustration Sun gravity bends space around it. With bokeh effect. Concept gravity deforms space time grid around universe. Spacetime curvature. Elements of this image furnished by NASA. https://commons.wikimedia.org/wiki/File:Land_ocean_ice_2048.jpghttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/th-1.jpgthhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/relativity-sun-warps-space-starlight-earth-400x319.jpgrelativity-sun-warps-space-starlight-earth-400x319https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/earth_to_sun_light.pngEarth_to_Sun_lighthttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/mercuryadvanceperihelion-e1506493557713.jpgMercuryadvanceperihelionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/3d-space-time.jpg3d space time2024-10-08T04:45:08+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/27/einstein-general-relativity/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/einstein_general_relativity_confirmation_gravity_probe_b_michio_kaku_big_think-1.jpgeinstein_general_relativity_confirmation_gravity_probe_b_michio_kaku_big_thinkhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/hubble-galaxies.jpghubble galaxiesAstronomers using the Hubble Space Telescope have captured the most comprehensive picture ever assembled of the evolving Universe — and one of the most colourful. The study is called the Ultraviolet Coverage of the Hubble Ultra Deep Field (UVUDF) project.https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/spacetime.jpgspacetimehttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/twinparadox.jpgTwinparadoxhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/elevator-einstein.jpgelevator 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limithttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/car-window-e1506324060341.jpgcar windowhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/albert-einstein-quotes-genius1.jpgAlbert-Einstein-quotes-Genius1https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/relativity-sun-warps-space-starlight-earth-400x319.jpgWarping of Starlight (space-time)https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/mercury-orbit-precession.pngMercury Orbit Precession2024-10-08T04:29:33+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/25/moving-with-the-tides/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/tides.jpgtideshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/moon_tides.jpgMoon_tideshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/earthmoontides_l.jpgEarthMoonTides_lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/iapetus.jpgiapetushttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/high-tide-6.jpghigh-tide-6https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/moon-force-attraction.jpgmoon-force-attractionhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/tides.jpgtideshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/tidal-bulge.jpgTidal Bulge Offsethttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/spring-and-neap-tides.jpgSpring and Neap Tideshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/hi-low-tide.jpgHigh and Low Tide2024-10-08T04:21:40+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/24/how-orbits-work/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/wicxuwfzl2n3dqeymythmb.jpgwiCxuWfzL2n3dqEYmytHMbhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/the-earth-orbit-the-sun.jpgthe-earth-orbit-the-sunhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/satellite-dish-0.jpgsatellite-dish-0https://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/2-free-fall.jpg2-free-fallhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/the-earth-orbit-the-sun.jpgthe-earth-orbit-the-sunhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/escape-velocity-formula.jpgEscape Velocity Formulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/screen-shot-2014-12-13-at-9-55-23-am.pngGravitational Constanthttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/12/screen-shot-2014-12-13-at-9-54-25-am.pngGravitational 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Phases B2024-10-07T21:47:09+00:00monthlyhttps://cosmosatyourdoorstep.com/2014/09/08/what-is-precession/https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/precession-of-the-earth-s-axis-l.jpgprecession-of-the-earth-s-axis-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/precessionglobes-e1497064205937.jpgprecessionglobeshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/cultures_egypt_images-3.jpgcultures_egypt_images-3https://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/main-qimg-6f330bbefd018f65cbc74eaf40fe8a22-c.jpegmain-qimg-6f330bbefd018f65cbc74eaf40fe8a22-chttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/dragonprecession_orig.gifdragonprecession_orighttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/precess.jpgprecesshttps://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/fullsizeoutput_621.jpegfullsizeoutput_621https://cosmosatyourdoorstep.com/wp-content/uploads/2017/06/fullsizeoutput_620.jpegfullsizeoutput_6202025-12-09T00:16:02+00:00monthlyhttps://cosmosatyourdoorstep.com/2014/09/07/the-celestial-sphere/https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/stars-appear-to-be-moving-from-east-to-west-stars-rising-in-the-east-l-3877158581-e1675736709746.jpgstars-appear-to-be-moving-from-east-to-west-stars-rising-in-the-east-lhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/0uc5f.jpg0uc5Fhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/64903-050-3e1ed75a.webp64903-050-3E1ED75Ahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/a9leqtixqw69vgzhjsc9_ra_and_dec_on_celestial_sphere.pnga9leQTIXQW69VgzHjSc9_Ra_and_dec_on_celestial_spherehttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/cs.gifcshttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/celestial-sphere-icon2.webpcelestial-sphere-icon2https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/we-the-curious_planetarium2_credit-lee-pullen-37cbc9d.jpgWe-The-Curious_Planetarium2_Credit-Lee-Pullen-37cbc9dhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/npolars.gifPole Pathhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/celestialsphere.jpgCelestial Sphere2025-10-02T10:35:17+00:00monthlyhttps://cosmosatyourdoorstep.com/2014/09/05/mapping-the-sky/https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/summer_trinagle_map_600.jpgSummer_trinagle_map_600https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/orion-nebula1.jpgorion nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/orion-constellation-map-gif.pngOrion-constellation-map.gifhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/orion-nebula.jpgorion nebulahttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/pegasus2.jpgpegasus2https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/pegasus-constellation-map-gif.pngPegasus-constellation-map.gifhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/pegasus1.jpgpegasushttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/starfield.jpgstarfieldhttps://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/draco-and-dippers-horizon-view.gifDraco and Dippers This shows Ursa Major, Ursa Minor, and Draco the Dragon. Notice that the Big Dipper is actually a grouping of stars within the larger Ursa Major.https://cosmosatyourdoorstep.com/wp-content/uploads/2014/09/images.jpgConstellationsThis is probably the best example you could find of how the constellations refer to areas of the sky. The gray outlines are the outlines of the individual areas; the black outlines the entire group of areas. Notice the Great Square of Pegasus within Pegasus's area of the sky. Notice that it shares a star with Andromeda; that's Alpheratz, mentioned above.2024-10-07T21:29:40+00:00monthlyhttps://cosmosatyourdoorstep.com/2017/09/05/sunrise-in-flagstaff/https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4930.jpgimg_4930https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4924-3.jpgimg_4924-3https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4925-1.jpgimg_4925-1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4927-1.jpgimg_4927-1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4929-1.jpgimg_4929-1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4926-1.jpgimg_4926-1https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4929.jpgimg_4929https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4924-2.jpgimg_4924-2https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4927.jpgimg_4927https://cosmosatyourdoorstep.com/wp-content/uploads/2017/09/img_4926.jpgimg_49262017-09-05T18:04:27+00:00monthlyhttps://cosmosatyourdoorstep.comdaily1.02026-02-12T20:50:30+00:00