What is a Black Hole

NASA

What is a Black Hole? We Asked a NASA Expert: Episode 59

What is a black hole? Well, the name is actually a little misleading because black holes aren’t actually holes. They’re regions in space that have a gravitational pull that is so strong that nothing can escape, not even light. Scientists know about two different sizes of black holes — stellar-mass black holes and supermassive black holes. A stellar-mass black hole…