How newton discover gravity?

Answer 1

Newton did not discover gravity. He realized that the same force, gravitational force, that acts on all things here on earth go thru space and act on the moon to keep it in orbit. The same for the planets revolving around the sun.

Answer 2

It was not an apple. There may have been a time when an apple did fall on his head, but that isn't it. Sir Isaac newton discovered gravity by wondering what held the planets in orbit, and what drew objects toward the earth, both of which were wondered about before, but his true genius came when he though they could be the very same force--gravity.

Answer 3

Isaac Newton discovered gravity in the late 17th century by observing an apple fall from a tree and realizing that the same force affecting the apple could be responsible for keeping the Moon in orbit around Earth. This led him to develop his law of universal gravitation, which describes the force of attraction between all objects with mass.