gravity

By ekrenz2695
  • 300

    Ancient Greeks

    The greeks discovered that the earth was the center of the universe. Earth was considered the heaviest of all four natural elements.
  • Jan 1, 1480

    Copernicus

    Said that instead of the Earth being in the center of the universe with all of the planets orbiting it, the sun was the center of the universe.

  • Johannes Kepler

    Discovered the exact orbits of the planets around the sun. Created three laws of gravity called Kepler's Laws

  • Galileo

    Investigated the earthly effects of gravity

  • Newton

    Discovered that there was a force pulling things towards the center of the earth. Created Newton's three laws.

  • Einstein

    Extended Newton's laws of gravity. Created the theory of relativity. Concluded that mass has an effect on gravity.