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Cake day: August 5th, 2023

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  • xenoclast@lemmy.worldtoScience Memes@mander.xyzperspective
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    1 month ago

    Meaning a little less than half of that radius is way way way less than 20 million times less dense. That’s wild.

    I think about that when looking at luminous gas clouds that are millions of lys across. We can only “see” it because all the photons coming from that region of space is concentrated in a tiny visible area.


  • xenoclast@lemmy.worldtoScience Memes@mander.xyzperspective
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    1 month ago

    They do, but space is very big, and gravity is relatively weak in comparison.

    The strength of gravity drops off exponentially with distance. For a star to consume another star they need to be really close.

    This is made even more difficult when you consider they’re all moving through empty space really really fast.