star size
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Star Mass and Density
What makes a star shine bright? Much earlier on — probably months ago now — I explained how something called the proton-proton chain generates massive amounts of energy within stars, and enables them to fuel whole solar systems. That’s the battery…
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Eclipsing Binary Stars
Imagine a frisbee. At the center of this frisbee lies the sun — our sun, for simplicity’s sake. And sprinkled around the surface of its disk are all nine…excuse me, eight…planets of the solar system, plus the dwarf planets, asteroids, moons,…
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How Far Are the Stars?
Stars don’t look small because they’re really the size of pinholes in a blanket. The smallest are the size of Earth. The largest have 128,865,170 times Earth’s diameter. They look small in the sky because they’re distant. It’s for the same…
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Just How Big Are Stars?
Tell me about the stars you see in this image. They look like billions of little pinpricks of light, right? It’s hard to imagine that each one of these is probably the size of the sun…or much larger. And the…
