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After the new Kurzgesagt video about black holes...
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this post was submitted on 04 Dec 2024
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Can you get your head around singularities? Because as much as I do understand, I still don't understand them.
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".
This Veritasium video could help to explain some things (it still boggles my brain): https://youtu.be/6akmv1bsz1M
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.