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TIL of a redout, the opposite of a blackout. Typically only experienced by pilots, blood flows from lower parts of the body to the head, and can cause stroke and retinal damage.

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ANm4 TIL newgrounds.com originated in 1991 as a NeoGeo fanzine run by then 13 year old Tom Fulp
wLKo6 TIL the so-called ‘Pillars of Creation’, which are to be found within the Eagle Nebula. The nebula lies 6,500 light years away. The ‘pillar’ on the left is 4 light-years high, which is around 24,000,000,000,000 miles, (24 trillion).
rRK8o TIL lime juice on skin, when exposed to sunlight, can cause a poison ivy type rash called phytophotodermatitis. It is common for bartenders making margaritas but can also be a problem for basic skincare products like deodorants and lotions that use real lime.
x5Ag TIL: the word “synonym” has a synonym and it’s “Poecilonym”
wyAY TIL that An old custom in ancient Babylon compels all women to go to the temple of Aphrodite and have sex with a stranger at least once in their lives.