Events
1975 - Viking 1 planetary probe launched toward Mars.
1977 - Voyager 2 probe launched.
Births
1719 - Christian Mayer, Czech astronomer
1779 - Jöns Jakob Berzelius, Swedish chemist
1913 - Roger Wolcott Sperry, American neurobiologist, recipient of the Nobel Prize in Physiology or Medicine
1936 - Hideki Shirakawa, Japanese chemist, Nobel Prize laureate
Deaths
1915 - Paul Ehrlich, German scientist, recipient of the Nobel Prize in Physiology or Medicine
1917 - Adolf von Baeyer, German chemist, Nobel Prize laureate
1961 - Percy Williams Bridgman, American physicist, Nobel Prize laureate
1997 - Norris Bradbury, American physicist
2001 - Fred Hoyle, English astronomer
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