Black holes go boom in several ways.
Black holes are cosmic vacuum cleaners — massive objects so large that not even light can escape them.
Hawking radiationThere is one way in which black holes can explode. The process behind this is related to the fact that black holes aren't entirely black, which was discovered by famed astrophysicist Stephen Hawking in 1976. If small black holes formed in the extremely early universe, they would take a few billion years to evaporate, meaning that these"primordial" black holes, if they exist, would be exploding all over the universe right now.
The rotating space-time around a black hole can also pull on photons. If there are enough photons, they can bounce off of each other or any wandering particles. Sometimes the bouncing causes the photons to escape the ergosphere. But other times the bouncing causes the photons to fall deeper towards the black hole, where they gain energy. They can then get scattered to a higher orbit again, then fall back down.
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