General relativity explained to kids

Albert Einstein's theory of relativity is a theory that explains the physical laws that govern how objects move. It is based on the idea that the laws of physics are the same for all observers, regardless of their relative motion. Einstein's theory of relativity has two parts: special relativity and general relativity. Special relativity is the theory that explains the laws of physics in situations where there is no gravity. General relativity is the theory that explains the laws of physics in situations where there is gravity. Einstein's theory of relativity is important because it helps us to understand the universe better. For example, it explains why the planets orbit the Sun, and it also explains the behavior of light.