why dont blackholes destroy the universe?

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if there is even just one blackhole, wouldnt it just keep on consuming matter and eventually consume everything?

In: Planetary Science

28 Answers

Anonymous 0 Comments

There is a misconception that black holes are this super special dangerous thing that sucks and goes on to consume everything. In reality it’s just another body of mass that produces gravity, just like the sun or earth. The only difference between a star and a black hole of the same mass is that the star radiates light by nuclear fusion, and obviously that the black hole has an event horison.

So just like any other star or planet etc. stuff will orbit, fly by, miss, fall into it, and so on. And gravity falls of very quickly with distance.

(This is simplified to eli5, general relativity has weird consequences for black holes, we also have stuff like hawking radiation etc etc.)

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