quasar 3C 273

  • The Universe: A Timeline of Discovery

    The Universe: A Timeline of Discovery

    Aaaaand she’s back! Sorry for the delay — school had me burnt out! Consider this: humanity has existed for just a few thousand years, and for most of that time, our existence has been constrained to one little blue mote…

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  • Active Galaxies Demystified

    Active Galaxies Demystified

    Active galaxies are, without a doubt, absolutely spectacular. Though rare, they tell a critical part of the story of galaxies — and of the universe as a whole. And we’ve spent the last few posts exploring them in depth. But…

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  • What the Heck is a Quasar?

    What the Heck is a Quasar?

    I’ll give you a hint: this is not an image of a quasar. This image is from a first-season Star Trek: The Original Series episode, “The Galileo Seven” — the original footage, before it was remastered (and before astronomers had…

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