Tests of general relativity

General relativity is a theory that explains how gravity works. To test if the theory is right, scientists come up with experiments to measure how things move when gravity is involved. For example, they might use satellites to measure how something moves when it is close to a big object with lots of gravity, like a black hole. Based on these experiments, scientists can see if the predictions made by the theory of general relativity match what they observe. If they do, then the theory is correct!