-
He used the sun to measure the size of the round earth.
-
He set up the Ptolemaic system - the sun, stars, and other planets revolved around Earth.
-
He put the sun at the center of our system. Used his own observations to support his idea. He believed that the Earth rotates on its axis.
-
Tycho built instruments to be able to see starts and used clocks and timekeepers. He was able to measure one minute of arc.
-
Famous for his work on forces. He calculated 3 laws describing the motion of forces between objects. Known as Newton's Lae
-
Famous! Laws of physics are same throughout the universe. Speed of light is constant and space-time.
-
Planets traveled around the sun in ellipses. Calculated 3 laws.