who was johannes kepler
Four centuries ago, an evening's entertainment was as simple as stepping out to gaze at the night sky. But among the world's many star watchers, one man stood apart. Johannes Kepler (1571-1630) was a mathematician and physicist who not only observed, but also sought to explain the celestial dance above. As a rather frail young man, the exceptionally talented Kepler turned to mathematics and the study of the heavens early on.