Question

Kepler's third law of motion
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Answer 1

Answer

In astronomy, Kepler's laws of planet motion are three scientific laws describing the motion of planets around the Sun, published by Johannes Kepler between 1609 and 1619.

Answer 2

☞︎︎︎ The third law expresses that the farther a planet is from the Sun, the slower its orbital speed, and vice versa. Isaac Newton showed in 1687 that relationships like Kepler's would apply in the Solar System to a good approximation, as a consequence of his own laws of motion and law of universal gravitation.