General theory of relativity explains large scale phenomena from "summary" of A Brief History of Time by Stephen W. Hawking
The General Theory of Relativity, formulated by Albert Einstein in 1915, is a fundamental theory in physics that describes gravity as a curvature of spacetime caused by mass and energy. This theory has proven to be incredibly successful in explaining various phenomena on large scales, such as the motion of planets in our solar system and the bending of light by massive objects. One of the key insights of the General Theory of Relativity is that gravity is not a force in the traditional sense, but rather a consequence of the curvature of spacetime. In the presence of mass and energy, spacetime is warped, and objects follow curved paths in this curved spacetime. This curvature of spacetime leads to the phenomenon of gravity, where objects are drawn towards each other due to the curvature caused by their mass. The General Theory of Relativity has also bee...
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