Black hole life span?

Nov 27, 2019
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What eventually happens to black holes? Every galaxy has at least one in the center, and they seem to be plentiful in space. Do they just keep devouring matter forever and ever? It doesn’t seem plausible that they could eventually eat up everything in the universe.
 
Nov 27, 2019
46
9
55
I wonder if our universe didn’t originate from one huge black hole 13.8 billion years ago because every element created has got to be in a black hole. And the gravity of a black hole seems to be able to devour any and everything. Like some gigantic space cycle. The Hoover of the universe, then the vacuum bag bursts.
 
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Reactions: David J Franks
Aug 4, 2020
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www.geometrydash.me
Black holes take unimaginably long periods or time to die. Even a black hole with the mass of the sun would take somewhere around 10⁶⁷ years to die. And all black holes are much larger that (assuming primordial black holes don't exist).

Black holes die by “evaporating". This is a necessary consequence of both relativity and quantum field theory.

The rate at which black holes evaporate is proportional to their temperature, called the Bekenstein-Hawking temperature.Eventually, in theory, black holes will evaporate through Hawking radiation. But it would take much longer than the entire age of the universe for most black holes we know about to significantly evaporate. Black holes, even the ones around a few times the mass of the Sun, will be around for a really, really long time!
 

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