this post was submitted on 10 Aug 2024
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Science Memes

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[–] NigelFrobisher@aussie.zone 6 points 1 month ago (2 children)

Why doesn’t the big star simply eat the smaller stars?

[–] xenoclast@lemmy.world 2 points 1 month ago* (last edited 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.

[–] psud@aussie.zone 1 points 1 month ago* (last edited 1 month ago)

Look up "the great attractor".

The "big crunch" is the (probably incorrect) hypothesis that there's enough mass to pull the universe into a single black hole - where everything is eaten by black holes, even all the black holes (nothing to do with the great attractor). The big bang in reverse