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TIL After Neil Armstrong's death, his sons put hundreds of items they inherited from their parents on auction, pulling in $14.69 million. Neil Armstrong owned pieces of fabric from Wright Flyer, and Apollo 11 gold medal that sold for $2.04 million

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l79xV TIL i learned that some sharks that have no visible gums launch their teeth out when they are about to bite
78k4M TIL that in the record setting $2million dollar (before inflation) boxing match between Jack Dempsey and Gene Tunney, they swapped referees to stop Al Capone from trying to rig the match.
LAdr TIL that Tenochtitlan, the capital of the Aztec Empire, is estimated to have had a population of 3-4 times that of London, in 1519
PkPG TIL that the strategy guide for Fallout: New Vegas is longer than Tolstoy’s “War and Peace”
nepjb TIL viruses (100nm) are smaller than the wavelength of visible light (380-740nm), so light doesn't bounce off of them. They are therefore invisible, and can only be seen with electron microscopes.