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TIL that the US Navy used the moon as the first “relay” satellite (i.e. sending signals from ship to moon to land and vice versa)

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OGBAa TIL that all but one the first cryogenically frozen humans eventually decomposed due to either mismanagement, faulty equipment or family issues.
Wk019 TIL that in 2014, astronomers discovered an Unusual Supernova that has been continually exploding since the 1950's. No theory exists that explains why this supernova eruption has lasted hundreds of times longer than typical supernovae eruptions, which usually last about 100 days.
16ZgD TIL that Mark Yavorsky, the inspiration behind Werner Herzog's film "My Son, My Son, What Have Ye Done," had erected a shrine to Herzog's "Aguirre, the Wrath of God." This concerned Herzog so much that the two never met again.
16KJ7 TIL: In 1355, Portuguese King Afonso IV had his son Pedro’s mistress, Inês de Castro, decapitated in front of her children to end their romance. When Pedro became king, he had her killers’ hearts publicly ripped out—saying they had pulverized his own.
wok97 TIL the Auroras caused by the Carrington Event were so bright that it woke coal miners in Colorado, who began making breakfast believing it was morning.