|Kepler's Model of the Solar System |
from Mysterium Cosmographicum
I'm quite sure you will remember Kepler's Laws of planetary motion. (If not so, here is a brief recollection...):
- The orbit of every planet is an ellipse with the Sun at one of the two foci.
- A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.
- The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
At yovisto you might start with a lecture on Kepler's Laws by Prof. Ramamurti Shankar from Yale University. Enjoy!