廣義相對論, or General Relativity, is a theory of gravitation developed by Albert Einstein in 1915. It describes gravity not as a force, but as a curvature of space and time caused by mass. Massive objects, like planets and stars, warp the fabric of the universe, influencing the motion of other objects around them. This theory revolutionized our understanding of the universe, explaining phenomena such as the bending of light around massive objects and the expansion of the universe. 廣義相對論 has been confirmed through various experiments and observations, including the detection of gravitational waves and the precise movement of planets.