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TIL that in 1977, Jimmy Carter penned a three-paragraph letter to accompany the Voyager spacecraft. Today, that letter is travelling beyond our Solar System at speeds of eleven miles a second. It is the first letter in history to reach extrasolar space.

Read more science.nasa.gov

via reddit.com

xVaBk TIL the fog that covers San Fransisco has a name, Karl. It has Twitter and Instagram accounts, each with a couple hundred thousand followers.
rRw51 TIL that the employees of Disney land worked in such terrible conditions they referred to the park as “Mauschwitz” until managers discovered the employee lingo and banned use of the word for being un-Disney-like. Within an hour the staff switched to “Duckau”
Ege0 TIL In 1945 Frank Sinatra cancelled a $10,000 gig and traveled to Gary, Indiana to convince white high school students striking against integration to return to school. Sinatra called it “the most shameful incident in the history of American education.”
D1MGj TIL the US Navy has 6 standard alarms for specific scenarios on a submarine. Each alarm sounds different, has immediate actions and priority- collision, diving, missile emergency, missile jettison, general, and power plant casualty. A mnemonic for the order is, "Can Dead Missile Men Get Pro-Pay?"
rRbyo TIL about Akrotiri, an ancient city on the Greek island of Santorini. The city was buried under falling ash 3600 years ago after a massive volcanic explosion and is now the most commonly cited origin of the legend of Atlantis. Unlike the legend, Akrotiri was evacuated with little to no loss of life.