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| Description: Sir Isaac Newton (1643–1727) Law of universal gravitation Proved that the force of gravity, combined with the tendency of a planet to remain in straight-line motion, results in the elliptical orbits discovered by Kepler Picture Stats: Views: 299 Filesize: 901.99kB Height: 791 Width: 601 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39651 |