The scientist known for developing the theory of general relativity is Albert Einstein. Introduced in 1915, this groundbreaking theory revolutionized the understanding of gravity, proposing that gravity is not merely a force but a curvature of spacetime caused by massive objects. According to general relativity, the presence of mass warps the fabric of spacetime, influencing the motion of objects nearby. This theory led to predictions such as the bending of light by gravity and the existence of black holes. Einstein's contributions extended beyond general relativity to the development of quantum theory, solidifying his legacy as one of the most influential physicists in history.