Friday, April 12, 2013

K is for Kepler's Laws of Planetary Motion

Kepler's Laws of Planetary Motion are a basic that any student of physics and astronomy must know. When Johannes Kepler derived them from the motions of the heavens, they revolutionized our understanding of the solar system.

First, here's a brief biography of Kepler.

Next, let's learn more about the laws themselves.  Who better than Carl Sagan to introduce the specifics of Kepler's Laws of Planetary Motion?


  1. I remember watching this as a kid right at the height of my love for astronomy.

    Kepler changed how we saw the universe forever. We can't say that about too many people.

  2. I remember hearing about Kepler in a college astronomy course. It's amazing how their minds worked, in those days.