Kepler's Laws

Created by a physics teacher, this site explains Johannes Kepler's three laws and how they apply to the orbits of planets. There is also a biography of Kepler and Danish astronomer Tycho Brahe. A very limited site, it is linked to a comet page by the same author.

Not available.

William L. Drennon

Astronomy and Space, Math, Physics

Science and Math

11, 12