jun 26, 1600 - Johannes Kepler: Kepler had three laws about the fundamental laws of planetary motion. The first is that all planets orbit the sun in an elliptical path. The second is that planets are faster when they are closer to the sun. The third is that the distance from the sun effects the length of a planet's orbital period. He fixed Copernicus's model by having the planets orbit the sun elliptically.
Added to timeline:
Date:
jun 26, 1600
Now
~ 426 years ago