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 been successful in explaining the behavior of massive objects in the universe, such as stars and galaxies. By modeling the distribution of mass and energy in the universe, the theory can predict the way in which objects move and interact on large scales. This has allowed scientists to understand the formation and evolution of galaxies, as well as the behavior of massive black holes in the centers of galaxies. Furthermore, the General Theory of Relativity has implications for the structure and evolution of the universe as a whole. By applying the theory to the entire cosmos, scientists have been able to develop models of the universe's history and predict its future evolution. This has led to the discovery of phenomena such as the expansion of the universe and the existence of dark energy, which are key components of our current understanding of the cosmos.- The General Theory of Relativity is a powerful framework that has been instrumental in explaining a wide range of phenomena on large scales, from the motion of planets to the evolution of the universe. By understanding how gravity arises from the curvature of spacetime, scientists have been able to make significant advances in our understanding of the universe and its behavior.
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