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TIL in January of 1997, Astronaut John Grunsfeld placed a prank call to the NPR call-in show Car Talk during the Space Shuttle Atlantis mission STS-81.

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rNew4 TIL that, about quantum physics, while Einstein thought something was missing in our knowledge, Bohr thought that our reality is a fantasy and the real truth is quantum weirdeness. Bohr meant that, on a large scale, certain quantum properties disappear (quantum decoherence).
LkBgm TIL the word punch is a loanword from Sanskrit (pañc), meaning “five.” The drink was originally made with five ingredients: alcohol, sugar, lemon, water, and tea or spices
ADal7 TIL the Jack of Clubs in a typical English/French deck is Lancelot, from Arthurian legend.
4X8Db TIL of a band called Dread Zeppelin. A parody band, they perform Zeppelin material in a reggae style, sung by a 300-pound Elvis impersonator.
vPNGL TIL the 2004 Indian Ocean earthquake and tsunami was so powerful that it increased Earth's rotation speed and shortened the length of the day by 2.68 microseconds