This photo
illustrates how planets in our solar system
orbit our Sun. The planet is depicted as the yellow dot at the bottom right, while the Sun is located at the left focus. |
Introducing the Laws of Planetary
Motion
Kepler's First Law of
Planetary Motion:
*All
planets move in ellipses with the Sun at one
of the foci*
Thanks to previous
observations by Danish astronomer Tycho Brahe,
Kepler was able to introduce the idea that the orbits of
planets around our Sun are elliptical, and the Sun
rests at one focus in the ellipse .With his
first Law of Planetary Motion, Kepler described
how the planets in our solar system orbit the Sun in a non-circular path. |
Contents Title Page Kepler’s First Law of Planetary Motion Kepler’s Second
Law of Planetary Motion Kepler’s Third
Law of Planetary Motion |