Eli5: How do blackholes form and exist?

Question

Eli5: How do blackholes form and exist?

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Answer 1

I’ll let some other people answer this one.

“ a star collapsing … eventually shrinks to zero size.”
(p. 49) 23 S. Hawking, A brief history of time, Bantam (1988)

“The matter that forms a black hole is crushed out of existence.”
Prof. Cole Miller of U Maryland.

“the matter of the object is crushed out of existence.”
Prof. David Harrison or U Toronto.

“The star eventually collapses to the point of zero volume…”
NASA on Imagine the Universe, Black Holes.

So as you can see they form by being crushed out of existence.