![]() Although even Newton was troubled by the unknown nature of that force, the basic framework was extremely successful at describing motion.Įxperiments and observations show that Einstein's description of gravitation accounts for several effects that are unexplained by Newton's law, such as minute anomalies in the orbits of Mercury and other planets. In Newton's model, gravity is the result of an attractive force between massive objects. The theory of general relativity says that the observed gravitational effect between masses results from their warping of spacetime.īy the beginning of the 20th century, Newton's law of universal gravitation had been accepted for more than two hundred years as a valid description of the gravitational force between masses. General relativity is a theory of gravitation developed by Albert Einstein between 19. ![]()
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