![]() But according to Newton's gravity, the effect of the Sun's vanishing would be felt immediately, as the Earth would fly away in a tangential direction to its original path." Einstein's special theory of relativity, however, states that nothing, not even information, can travel faster than the speed Its disappearance immediately just by looking at the Sun, because light takes some time to travel. Suppose the Sun were to vanish from the horizon today. "According to Newton's theory, gravitational interaction is instantaneous. Problems arose, however, when Einstein developed his special theory of relativity in 1905. Newton's theory of gravity, published in 1687, is remarkably accurate when it comes to most practical purposes, and went unchallenged for over 300 years. That's why the Sun remains more or less stationary, while the Earth is forced on an orbit around it. The Earth's gravitational pull is negligible compared to that experienced by the much less massive Earth. Since the Sun's mass is large, the acceleration it experiences due to ![]() According to Newton's second law of motion, the magnitude of the acceleration a body experiences when it is subjected to a force is equal to the magnitude of the force divided by the body's mass. ![]() The forces experienced by Earth and Sun may be equal in magnitude, but the resulting motion is not the same for the two bodies. The gravitational interaction of two spherical bodies according to Newton.
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