On this day in 1959, rising American rock stars Buddy Holly, Ritchie Valens and J.P. "The Big Bopper" Richardson are killed when their chartered Beechcraft Bonanza plane crashes in Iowa a few minutes after takeoff from Mason City on a flight headed for Moorehead, Minnesota. Investigators blamed the crash on bad weather and pilot error. Holly and his band, the Crickets, had just scored a No. 1 hit with "That'll Be the Day."
After mechanical difficulties with the tour bus, Holly had chartered a plane for his band to fly between stops on the Winter Dance Party Tour. However, Richardson, who had the flu, convinced Holly's band member Waylon Jennings to give up his seat, and Ritchie Valens won a coin toss for another seat on the plane.
On March 14, 1879, Albert Einstein is born, the son of a Jewish electrical engineer in Ulm, Germany. Einstein's theories of special and general relativity drastically altered man's view of the universe, and his work in particle and energy theory helped make possible quantum mechanics and, ultimately, the atomic bomb.
After a childhood in Germany and Italy, Einstein studied physics and mathematics at the Federal Polytechnic Academy in Zurich, Switzerland. He became a Swiss citizen and in 1905 was awarded a Ph.D. from the University of Zurich while working at the Swiss patent office in Bern. That year, which historians of Einstein's career call the annus mirabilis--the "miracle year"--he published five theoretical papers that were to have a profound effect on the development of modern physics.