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TIL in the 1880s, the director of Harvard Observatory was dissatisfied with his team and remarked, "My Scottish maid could do better!" He hired Williamina Fleming, his Scottish maid. For decades, Fleming led a team that made significant discoveries, including white dwarfs and the Horsehead Nebula.

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Ev4x TIL capital letters were stored in the upper tray for typefaces. This is why they’re called uppercase.
ly67 TIL In the month before the ancient Olympics no wars were permitted so that spectators could travel from across Greece unharmed,
rR7le TIL "Wagyu beef" just means "Japanese beef beef".
BW5e TIL the Germans used Kriegspiel, a chess variant where players cannot see their opponent’s pieces, to train its military officers in the 19th century.
W77o9 TIL about the Krupp family. A 400 year old dynasty of weapons manufactures that been selling weapons since the thirty years war and were the premier weapons manufactures for Germany during both world wars. They still exist today after merging with Thyssen to form the ThyssenKrupp corporation.