8 March 1618 March 7, 2014 Author: Staff Johannes Kepler finds the third law of planetary motion. Famous Words of Inspiration..."Never let life's hardships disturb you ... no one can avoid problems, not even saints or sages." Nichiren Daishonen — Click here for more from Nichiren Daishonen Related posts: 8 March 1983 8 March 1978 23 March 1983 3 March 1913 Categories: History Tags: 1618, 8 March