Development of theories regarding gravity

By danelperez_a@yahoo.com
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    Ptolemy

    Ptolemy came up with an idea in which placed the earth in the center of the universe. This system was called Ptolemaic System
  • Jan 1, 1530

    Nicolas Copernicus

    Around 1530 Nicolas Copernicus laid out the Copernican system which placed the sun in the center of the universe and put all other planets in orbit around it

  • Isaac Newton

    Around 1665 Isaac Newtton came up with the theories of motion and gravitation

  • Henry Cavendish

    Henry Cavendish calculated the earths density.