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TIL about HD 189733b, a blue planet the size of Jupiter about 63 lightyears away from Earth. The surface temperature is a staggering 1000°C, wind speeds average at around 7000 kilometers per hour, and it rains molten glass... sideways.

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via reddit.com

vPE0L TIL, that the concept of a pre-flight checklist was first introduced by management and engineers at the Boeing Company following the 1935 crash of the prototype Boeing B-17 (then known as the Model 299) at Wright Field in Dayton, Ohio, killing both pilots.
VBdd0 TIL That, in 2017, the documentary 'Amelia Earhart: The Lost Evidence' aired once on the History Channel. The documentary purported to show a photograph supposedly taken after the her disappearance. The doc was pulled after it was proved the pic was taken from a Japanese travel book from 1935.
KO5X4 TIL James Stockdale, a Vietnam War POW who didn't want to be in Vietnam, spent over seven years in a POW camp - four of them in solitary confinement and two in leg irons - and credits his Stoic philosophy studies for allowing him and his men to survive the constant torture and interrogation
awQLA TIL Beaver Butts Emit Goo Used for Vanilla Flavoring
5YORp TIL of Shizo Kanakuri, a japanese athlete who collapsed during the 1912 olympics marathon. Embarrassed, he went home without notifying race officials. He eventually came back to finish, with a time of 54 years, 8 months, 6 days, 5 hours, 32 minutes and 20.3 seconds