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- ISAAC NEWTON: 1687 A.D.
-
- Kepler's laws of planetary motion and Copernicus's
- heliocentric (sun centered) model of the solar system
- were verified by Isaac Newton when he wrote his laws
- of universal gravitation in the "Principia" (1687).
- Newtonian physics explained that the earth and the
- other planets revolve around the sun because of the
- sun's gravity.
- Newton's laws also served to explain the physical
- force (or phenomena) behind Kepler's laws of
- planetary motion.
-