User:Scientrifica/Black hole
From Wikipedia, the free encyclopedia
A black hole is a place in space where from nothing, not even light, can escape. In general relativity,[1] if enough matter is packed into a tiny enough space, a black hole would be made. A black hole is black because light cannot escape to let us see it. Under quantum mechanics, black holes have a temperature. This because black holes release Hawking radiation, which makes them slowly get smaller.
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Because we cannot see black holes, people use other ways to find them. Because black holes have very strong gravity, stars and matter near them, can orbit them. This is how astronomers found a supermassive black hole of more than four million solar masses (four million of our sun) at the center of our Milky Way galaxy.[2] People can find black holes when gas moves around a black hole. This is because as the gas moves around the black hole, friction makes it hot and also makes it very bright. This can be seen by telescopes on Earth or in space such as Chandra or XMM Newton.