dec 30, 1609 - The First Two Laws
Description:
In late 1609, Kepler published "Astronomia Novia" which introduced his first two laws of planetary motion. These laws are the Law of Ellipses and the Law of Equal Areas.Kepler, Johannes, and Brahe, Tycho. Astronomia nova aitiologetos [romanized]. G. Voegelinus], 1609.
Added to timeline:
Date:
dec 30, 1609
Now
~ 416 years ago