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TIL that on the night that MTV launched, the opening sequence for the network featured footage of the Apollo 11 launch, simply because it was public domain and free to use. It was that opening sequence that connected MTVs image with astronauts, including the Video Music Award “moon man” trophy.

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via reddit.com

5VJMr TIL the sum mass of prey consumed each year by world’s spiders is greater than the mass of all humans on the planet.
8ajQL TIL the striped appearance of some tulips was originally caused by a virus that infects their bulbs to “break” their solid colors. This appearance was highly sought after during the 17th century Dutch “tulip mania;” however, the virus results in smaller tulips with weakened bulbs and shorter stems.
p8YaQ TIL that after the Library of Congress was burned by the British in 1814, Thomas Jefferson offered his entire personal library as a replacement—more than doubling the previous size of the library to 6,487 volumes
xV08o TIL about photic sneeze reflex, a genetic condition which affects between 10-35% of the population and causes sneezing in response to dramatic light changes.
J1Oev TIL that taking fingerprints of those arrested by law enforcers is an official practice which goes back to Ancient Babylon, during the reign of Hammurabi (1792–1750 BCE)