Johannes Kepler
lived from 1571 to 1630

**Johannes Kepler** was a German mathematician and astronomer who discovered that the Earth and planets travel about the sun in elliptical orbits. He gave three fundamental laws of planetary motion. He also did important work in optics and geometry.

*Find out more at*:

http://mathshistory.st-andrews.ac.uk/Biographies/Kepler.html