› added 7 months ago

71

TIL San Francisco’s Alcatraz, the former federal penitentiary was the only prison to offer hot-water showers at the time

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via reddit.com

0wbDj TIL that S6 is the only symmetric group with a non-trivial outer automorphism.
jBgn TIL in 2010, the US Air Force built a supercomputer out of 1700 Playstation 3s.
VM74m TIL that the earth accumulates ~40,000 tonnes of space dust every year.
PrpO TIL a handful of McDonald’s ketchup packets a day WILL give you enough vitamin C to keep you from contracting scurvy
VBEDp TIL there are reservoirs of water vapour in molecular clouds on the verge of star formation