Describes the logic behind the development of Newton's law of universal gravitation. Beginning with Johannes Kepler and his three laws of planetary motion, content walks the reader through Newton's thought process and development of this...

[Free Registration/Login Required] Understand angular momentum conservation in the absence of an applied torque in the context of planetary orbits using this interactive simulation. A PDF worksheet and a video tutorial are also...

An outstanding page describing Kepler's three laws of planetary motion.

Through interactive practice problems and examples, students explore Kepler's Three Laws of Planetary Motion.

Biographical information of the early life of Kepler is provided as well as a somewhat detailed look at the highs and lows of his work in studying planetary motion.

This site from NASA provides biographical details about the lives of Tycho Brahe and Johannes Kepler. Discusses Kepler's successes at developing laws of planeatry motion. States the three laws and discusses each one individually....

At this site from the Astronomy Department of Cornell University, Kepler's three laws of planetary motion are stated. There are brief explanations of each, along with links to additional information on related subjects.

Kepler's Laws 1,2,3 including eccentricity of elliptical orbits. Good for reviewing planetary motions (NYS Earth Science).

Kepler's second law of planetary motion is stated and explained. An animation of the orbit of a planet and an accompanying graphic assists in explaining the meaning of the law of equal areas.

This site from NASA states Kepler's second law of planetary motion and depicts its meaning with an informative diagram. Relates the law to conservation of energy principles and discusses the eccentricity of a satellite's (or a planet's)...

Students explore orbits of planets and satellites. Some topics examined in the activities are planetary motion, angular momentum of orbits, and Kepler's laws. The resource consists of video clips, lecture notes, practice problems, and...

The University of Virginia provides notes from a lengthy lecture given on the life of Johannes Kepler. This site has GREAT information and is easy to understand.

This site from Open Source Physics offers a file with a simulation of Kepler's theory of planetary motion, tested with the Earth rotating around the sun and another planet of the user's choosing. The download requires Java.

Classroom lesson for teaching astronomy uses PowerPoint presentations and illustrations of Kepler's light curves used to discover planets.

An exhaustive biographical account of Johannes Kepler. Describes at length his upbringing, childhood, education, personality and scientific endeavors. Focus is on his development of a cosmological model and the laws of planetary motion.

This lecture explains Kepler's Three Laws of motion. Application of these laws are made to planetary movements around the sun. The lecture is available in multiple formats (audio, video, written transcript). Practice problems are also...

Good site explaining the laws of planetary motion and ellipses

This site from the Illinois Institute of Technology provides a set of directions for the creation of a solar system model out of paper mache. Includes orbital distances and planet diameters for the nine planets. Great idea for a student...

At this site from Cornell University, Kepler's three laws of planetary motion are stated. There are brief explanations of each. The laws are applied to explain the features of planetary orbits as well as the motion of binary star...

An exhaustive (very exhaustive) biographical account of Johannes Kepler. Describes at length his upbringing, childhood, education, personality and scientific endeavors. Focus is on his development of a cosmological model and the laws of...

An introduction to our solar system: the planets, our Sun and our Moon. Students begin by learning the history and engineering of space travel. They make simple rockets to acquire a basic understanding Newton's third law of motion. They...

This image shows Johannes Kepler, a German astronomer famous for his laws of planetary motion. Check out our Johannes Kepler facts page for more information.

A key figure in the scientific revoluion, a German astrologer, astronomer, and mathematician of famed brilliance. He is best known for his laws of planetary motion.