A biography of Johannes Kepler, the astronomer and mathematician who formulated the three laws of planetary motion.

To the naked eye, the most evident defining feature of the planets is their motion across the night sky. It was this motion that allowed ancient civilizations t

Our modern understanding of the heliocentric universe developed five hundred years ago. Since the time of Copernicus and Galileo, scientists have made major str

Thousands of years ago, people looked at the sky in wonder, fascinated by the motions of a few wandering stars. Nobody understood where these wandering objects-

Johannes Kepler is a fascinating man who would revolutionize humanity's conception of the cosmos and their place within it. He would replace the Ptolemaic syste