Black holes are rips in space-time in a -verse that can swallow anything, even light, which is the fastest thing in most -verses.
Black holes are formed when a star burns out and has enough gravity, in which it will then collapse into itself, usually creating a supernova. After that, a black hole will be formed. Black holes have also been created naturally by advanced civilizations outside of our Universe by squishing huge amounts of matter in one spot.
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