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TIL that an A10's gun is so powerful that shooting it halfs the planes forward thrust

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LgJm TIL that ‘Presque vu’ is the opposite of 'Déjà vu’, the phenomenon called tip of the tongue, a situation where someone cannot recall a familiar word or name, but with effort eventually recalls the elusive memory.
BgZxk TIL sportswriter Henry Chadwick (b. 1824), the "Father of Baseball" is credited with creating "K" as the designation for a strikeout. K is the middle sound of the word "strikeout", and other potential letters (S, T, R, I) already had meanings in baseball.
Ypbo7 TIL: Earth has no official planet-wide flag design although some have been proposed.
vPYrD TIL that the tab on your rear view mirror can be flipped for night time driving.
kEr7 TIL of the “Well to Hell” hoax, where it was reported than a group of Russian engineers (while drilling into the ground) broke into Hell, and screams of the damned could be heard. The Trinity Broadcasting Network ran with the story and claimed it proved the existence of Hell.