Black Hole
A black hole is a region of space containing so much matter that it collapses to an infinitely dense point. The force of gravity in a black hole is so great that anything falling into it, including electromagnetic waves, becomes trapped. Interpreting Diagrams What happens to an object trapped by a black hole?
Detecting a black hole
As matter swirls into a black hole, it can emit X-rays, gamma rays, and other radiation. Astronomers analyze this radiation to discover more about black holes.