I've always wondered what happens if two black holes run into each other? Can previously trapped matter somehow escape?
https://en.wikipedia.org/wiki/Hawking_radiation
If 2 black holes collide - they join together.
Presumably though some of the matter "escapes" as energy released during the merger, in the form of gravitational waves.
Which resulted in the earth (and space) being stretched by less than a fraction of a proton.
And we measured it...
Doesn't Hawking radiation, since it exits a black hole, violate the idea that nothing escapes a black hole?
My understanding is that particles and anti-particles pop into existence randomly, but quickly cancel each other out. Normally this doesn't affect anything, but if they happen to pop into existance right on the border of the event horizon, one will fall in and one will fall away. Thus matter is very very very slowly "leaving" the black hole. But not because matter inside is making it out, but rather because of some interesting quantum features of the fabric of spacetime.