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TIL Tele Vue founder Al Nagler designed optics for visual simulators used to train astronauts in piloting the Gemini spacecraft and the Apollo Lunar Module

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via reddit.com

k4y7 TIL that researchers are practicing for a human mission to Mars by living in the heart of Antarctica to see the effects of extreme isolation.
X0AxD TIL it is estimated that an adult megalodon shark could yield up to 70,456 bowls of shark fin soup.
5VnEQ TIL that Chlorine Trifluoride can set almost anything on fire, including glass and asbestos
1xKr TIL that Russian and NATO troops were very close to using force against each other in Kosovo, 1999. A NATO commander disobeyed the orders he was given, reportedly saying “I’m not going to start the Third World War for you” to his superior, who was later fired.
jRev TIL the word “Ewok” was never used during the entire filming of “The return of the Jedi” it was only used in the credits