ELI5: Explain Like I'm 5

black hole radiation

A black hole is a really big lump of matter (easier than atoms!) that has been squished together by gravity. It's so strong that not even light can escape! So, how does radiation come out of something like this? The answer is that black holes emit special particles called 'Hawking radiation'. Just like hot things give off heat, Hawking radiation comes out of the black hole because it's so squished together that it's really hot. It stretches out around the black hole like a hula hoop and somehow, a tiny bit of the radiation sneaks away from the black hole and off into space, carrying energy away with it.