Writer, inventor, and futurist Arthur C. Clarke was born on this day in 1917. He first proposed a satellite communication system that was based on geostationary orbits (i.e. orbits that took one Earth day to complete) in 1945. The area in space where this is possible (35,786 kilometers above the Earth’s equator) is called the Clarke Belt. Clarke wrote the screenplay for the 1968 film 2001: A Space Odyssey, based loosely on his short story "The Sentinel." He also wrote the sequel 2010: Odyssey Two in 1982, and the screenplay for the 1984 film 2010. The theme song for 2001 was from the beginning of Richard Strauss’s 1896 opus Also Sprach Zarathustra. In 1973, Brazilian jazz keyboardist Eumir Deodato did a jazz-funk version of the theme.