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100 BCE
Ptolemy
Believed that the earth was the center of the universe. Predicted movements of the planets. -
Period: 1473 to 1543
Nicolaus Copernicus
Made a model of the solar system with the Earth revolving around the sun. -
1546
Tycho Brahe
Believed the earth was the center of the universe. -
1571
Johannes Kepler
Devised three laws that govern planetary motion. -
Period: to
Sir Issac Newton
Formulated the basic laws of motion that are the basis of mechanics. -
Period: to
Albert Einstein
Suggested that the laws of physics are the same throughout the universe, that space and time are linked in an entity known as space-time, which is distorted by gravity and that the speed of light in a vacuum is constant.