Template:Selected anniversaries/December 14
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1546: Astromer Tycho Brahe born. He will make observations some five times more accurate than the best available observations at the time.
1560: Didacus automaton announces world tour, plans to "travel the seven seas and visit the furthest lands."
1782: The Montgolfier brothers' first balloon lifts off on its first test flight. Shown here: first public flight (June 4, 1783).
1940: Plutonium (specifically Pu-238) is first isolated at Berkeley, California.
1974: Lex Luthor announces new initiative to fight crimes against mathematical constants.
1977: Crimes against mathematical constants on the rise, according to Lex Luthor.
1978: Scrimshaw abuse blamed for new class of crimes against mathematical constants.