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2

TIL that some satellites intentionally change their orbit using the pressure of sunlight alone, without burning any fuel

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jAvv TIL after WWII, the Department of War was renamed Department of Defense
W7pvo TIL that in 2011 a court in the U.K. banned a man with a 48 IQ from having sex determining that he didn't have the mental capacity to understand the health risks associated with his actions.
0wxQp TIL that Popeye was inspired by the looks of a polish man named Frank "Rocky" Fiegel
NoLQ TIL Charles Darwin married his first cousin Emma Wedgwood, before having 10 children, three of which died before the age of 11. This lead him to wonder whether close genetic matches had an impact on health, adding to his theory of evolution and the passing of traits to offspring.
PYywG TIL the sinking of the Titanic was a popular subject for early African-American rapping (known as Toasts), specifically the story of a fictional black worker named "Shine" who tries to warn the captain about water flooding, but is ignored.