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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 main principles: the principle of special relativity and the principle of general relativity. The principle of special relativity is based on the idea that the laws of physics are the same for all observers in uniform motion. The principle of general relativity is based on the idea that gravity is a force between masses and that it bends spacetime.
Einstein’s theory of relativity has led to many important scientific discoveries, including black holes and gravitational waves.