1969 - Denton Cooley implants the first temporary artificial heart.
1983 - Space Shuttle Challenger makes its maiden voyage into space (STS-6).
1996 - Comet Hyakutake was imaged by the USA Asteroid Orbiter Near Earth Asteroid Rendezvous and the Hubble Space Telescope (see above).
1688 - Joseph-Nicolas Delisle, French astronomer
1842 - Edouard Lucas, French mathematician
1949 - Shing-Tung Yau, Chinese mathematician
1609 - Charles de L'Ecluse, Flemish botanist
1617 - John Napier, Scottish mathematician
1807 - Joseph JÃ©rÃ´me LefranÃ§ais de Lalande, French astronomer
1842 - Jean Moufot, French philosopher and mathematician
1919 - William Crookes, English chemist and physicist
1923 - John Venn, British mathematician
1932 - Wilhelm Ostwald, German chemist, Nobel Prize laureate
1961 - Simion Stoilow, Romanian mathematician