this post was submitted on 04 Dec 2024
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Science Memes

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After the new Kurzgesagt video about black holes... (imgflip.com)
submitted 2 weeks ago by [email protected] to c/[email protected]
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[–] [email protected] 18 points 2 weeks ago (2 children)

I watched it last night. I'm still trying to get my head around positive pressure vacuum.

[–] [email protected] 32 points 2 weeks ago (2 children)

Wikipedia says "the inner region has thermodynamically no entropy and may be thought of as a gravitational Bose–Einstein condensate" if that helps

[–] [email protected] 29 points 2 weeks ago

Oh thanks, that clears it up completely.

[–] [email protected] 5 points 2 weeks ago

It helps in that I clearly don't understand what is happening, but at least I can put fancy words with it.

[–] [email protected] 8 points 2 weeks ago (3 children)

Can you get your head around singularities? Because as much as I do understand, I still don't understand them.

[–] [email protected] 4 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

Its just a part in the equation where you're dividing by zero, that's all. We know you cant divide by zero, so it means our theories are incomplete.

The gravastar theory is notable (IMO) because it does away with the singularity. Although, it seems like this theory is borderline unfalsifiable, since any way you could detect a gravastar would also be insistinguishable from a black hole.

Personally, I am of the (completely unsubstantiated) opinion that black holes create universes (somehow) because it is a simple, succinct answer to many questions. So, any theory that takes that seriously would be worth further research, imo. But until there is some kind of observational evidence, I think this is just relegated to the realm of "that's a neat thing that math can do".

[–] [email protected] 2 points 2 weeks ago

That's interesting, I'm debunking bogus claims of my lil bro from time to time and when pushed it usually ends up in some sort of division by zero (all is everything and everything is all sort of idiocy), does this thing you describe where if you divide by zero your theory is incomplete have a name? Any pointer warmly welcomed!

[–] [email protected] 1 points 2 weeks ago (1 children)

This Veritasium video could help to explain some things (it still boggles my brain): https://youtu.be/6akmv1bsz1M

[–] [email protected] 2 points 2 weeks ago

Yes, this is an excellent video! Thanks for finding this, I couldn't remember which video I saw this in when I was typing my reply.

If this is something that interests anyone reading this thread, PBS Space Time has a number of excellent videos on the topic of black holes and their theoretical alternatives.

[–] [email protected] 3 points 2 weeks ago

I'm gonna rephrase that for both of us, I think (hope):
We understand better what it is we don't understand about them.