15 juin 1609 - Kepler's first two laws of planetary motion published
Description:
1. Each of the planetary orbits is an ellipse, with the sun at one focus2. A line drawn from the sun to any planet sweeps across the same area in space in any given period of time
Ajouté au bande de temps:
Date:
15 juin 1609
Maintenaint
~ Il y a 416 ans