The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests.
"Remarkab...
There’s a cosmological model in which the bounce actually takes place inside a supermassive black hole, and I know that some of the folks who like that view were excited about the James Webb results from last year that showed what appears to be a preferred axis of rotation for galaxies. I don’t know too much about the view though (I’m a lot more familiar with the small stuff than the big stuff).
If the Big Bounce happens faster than 10^100 years then there will still be black holes, and things falling into a black hole (such as the entire cosmos) would extend its lifespan.
Also, if the universe does eventually Bounce, new black holes will have opportunity to form. Hawking radiation only really starts to come into play when not even photons are hitting black holes any more.
For me the big question is “what about black holes” in a Big Bounce scenario.
There’s a cosmological model in which the bounce actually takes place inside a supermassive black hole, and I know that some of the folks who like that view were excited about the James Webb results from last year that showed what appears to be a preferred axis of rotation for galaxies. I don’t know too much about the view though (I’m a lot more familiar with the small stuff than the big stuff).
… with strange aeons even black holes may die …
If the Big Bounce happens faster than 10^100 years then there will still be black holes, and things falling into a black hole (such as the entire cosmos) would extend its lifespan.
Also, if the universe does eventually Bounce, new black holes will have opportunity to form. Hawking radiation only really starts to come into play when not even photons are hitting black holes any more.