Black Holes are weird, and awesome and a lot of other things. Let’s go down this rabbit hole…
Black Hole is a region of space having a gravitational field so intense that no matter or radiation can escape.
A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can’t see black holes. They are invisible.