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TIL that in 1954 John Stapp strapped himself to a rocket sled, accelerated to 632 MPH in 5 seconds, and then decelerated to 0 MPH in 1.4 seconds. He experienced 46.2 G’s. He went temporarily blind and experienced two black eyes from his eyeballs having been shot so far forward.

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AJrg TIL the longest surgery to date was a 96-hour marathon to remove a 300-lb ovarian cyst from a 600-lb woman. Simply hacking it out would have killed her, so the surgeon gradually drained fluid from the cyst over the course of 4 days, shrinking it to 100 lb. and allowing for a successful removal.
wv7o TIL that Captain Christopher Jones of the Mayflower forced their ship to land early at Plymouth Rock because of the ships dwindling supply of beer. Before pasteurization was discovered in 1864, beer through the process of fermentation, was safer to drink than water.
YQvB TIL Dissociative Identity Disorder (or split personalities) can be so extreme that one personality can show severe allergic to a substance and the other one will not show any reaction at all.
gMLL4 TIL about the "Super Guppy," an oddly-shaped, massive plane designed for transporting really really large cargo (rocket parts). Five were built, and they look kind of like flying beluga whales.
dDxb8 TIL A 2007 independent panel found that alcohol is "freely used in crew quarters," where astronauts are quarantined at the Kennedy Space Center in the three days before launch. NASA policy prohibits any drinking in the 12 hours before an astronaut flies a training jet