A black hole is a spot in space that has(power) gravity. Its gravity is so strong that it pulls everything nearby into it, stars, planets and other things. Black holes form when a star dies. When that happens, a huge amount of matter crowds into a very small space,becomes very dense. Black holes(talk) about in 1783 first. That year, one scientist said that in the universe, there might be places with strong gravity to trap light, although he didn't use the term "black hole".
