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100
Claudius Ptlomey (100-170)
believed the Earth was center of the universe.This was wrong but was accepted for many centuries -
276
Eratosthenes (276-195BC)
used the sun to measure the size of the Earth. He was only 211 miles off true measurements -
1473
Nicolas Copernicus (1473-1543)
Earth revolved around the sun. His idea wasn't completely correct but changed how scientist viewed the solar system -
1571
Johannes Kepler (1571-1630)
He found the 3 laws of planetary motion. he was the first to state the way to understand the motion of the planets was of the same force of the sun. These are the laws Newton was able to use to establish universal gravitation. -
Sir Issac Newton (1643-1727)
Calculated 3 laws describing the motion of forces between objects, now known as Newtons Law -
Albert Einstein (1879-1955)
Suggested that energy and mass are the same thing in different forms. This foreshadowed atomic power and the atomic bomb