Theories of Gravitation

Theories of gravitation describe how objects attract each other through gravity. Newton's law states that every mass pulls on every other mass proportionally to their sizes and inversely to the square of the distance between them, explaining planetary motion and falling objects. Einstein's General Relativity goes further, describing gravity not as a force but as the warping of spacetime caused by mass and energy; objects follow curved paths in this warped space. While Newton's theory works well for everyday situations, Einstein's theory better explains phenomena involving very dense objects or high speeds, such as black holes and the expansion of the universe.