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beremaki | 1 year ago

I am not a physicist but as I understand it everything inside the event horizon goes towards the singularity. No light can come from it for you to see the singularity

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davedx|1 year ago

Nobody is replying with any concrete proofs or references for this, so I will remain sceptical about it :)

beremaki|1 year ago

Then you are skeptical about the concept of event horizon. The proof you are looking for is general relatively and all the research validating it

cthalupa|1 year ago

There's different answers here for different types of black holes. Effectively, significant enough charge or rotational speeds can create a second horizon where inside the black hole, allowing for stable orbits inside the event horizon. The issue is there's no real explanation we have that would explain why a black hole would have accumulated enough charge to create a large enough second horizon for there to be stable orbit for us to sit around in and look at stuff.

It's more complicated with rotating black holes. https://arxiv.org/abs/1103.6140 and some other papers contend it's potentially possible, but I'm not sure if black holes large enough to support this sort of thing can rotate fast enough.

Neither would let you see the singularity, though, because the singularity isn't really a physical thing, and even if it were, there's not really any reason to believe it would emit or reflect light.

But all of this is likely nonsense when it comes to practical reality, though - the very fact the math leads us to a singularity means we're almost certainly missing something, and spacetime is really weird past Cauchy horizons - trying to extend the math to figure out what is going on behind them is probably futile.

I would guess in the real world there's not really anything "interesting" here from a 'seeing stuff while alive in the black hole' perspective, but in theory there are some solutions where you could see whatever else is inside the black hole with you.