第1个回答 2011-10-11
Newton's law of gravity should be familiar to us all.
Was Newton really hit by the apple? No one can confirm it. But one thing we must admit is that the discovery of universal gravitation is one of the greatest achievements in the 17th-century natural science. It unifies the laws of the movement of objects on the ground with the laws of celestial motion, having a far-reaching influence on the future development of physics and astronomy and seting a milestone in the history of human's understanding nature. If there is no Newton's law of gravity, it will be very hard for humans to interpret the laws of celestial motion, and the current astronavigation will not enjoy such rapid development.