On this day in 1990, the most complete skeleton of a Tyrannosaurus rex ("Sue") was discovered near Faith, South Dakota. In 1981, the IBM Personal Computer was released--the 5150 PC included an Intel 8088 CPU running at 4.77 MHz and a choice of two, one or no floppy drives (for users planning to connect a cassette recorder via the cassette jack). In 1977, the Space Shuttle Enterprise had its first free flight. In 1960, the first communications satellite (Echo I) launched. In 1953, the Soviet atomic bomb project proceeded with the detonation of Joe 4, the first Soviet thermonuclear weapon. In 1943, marked the alleged date of the first Philadelphia Experiment test on United States Navy ship USS Eldridge. In 1908, the first Model T Ford was built. In 1883, the last quagga died at the Artis Magistra zoo in Amsterdam. In 1877, Asaph Hall discovered Deimos, the smaller of Mars' two moons. And in 1851, Isaac Singer was granted a patent for his sewing machine. Happy Birthday Casey Affleck (1975); Pete Sampras, Rebecca Gayheart and Michael Ian Black (1971); Sir Mix A Lot (1963); Pat Metheny (1954) and Mark Knopfler (1949); George Hamilton (1939); John Derek (1926-1998); and Cecil B. DeMille (1881-1959). RIP Merv Griffin (d. 2007), Henry Fonda (1982), Ian Fleming (1964) and Cleopatra (30 BC). "Prediction is very difficult, especially about the future." - Niels Bohr