› added 2 years ago

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TIL that the hexagonally shaped mirror segments of the James Webb telescope can each move 1/10,000th the diameter of a human hair in order to accurately focus on deep space.

Read more webb.nasa.gov

via reddit.com

9nOX TIL that about 18% of California’s irrigation water is used to farm Alfalfa - a quarter of which is exported to places like China, Japan and Saudi Arabia.
WwGA TIL that time runs approximately 0.0000000014 percent slower on the Iss than on earth - after 6 months in the ISS, an astronaut will have aged 0.007 less than someone who had spent 6 months on earth, all due to time dilation.
691PW TIL Where's Waldo is really Wally
wW97 TIL Madagascar allows travelers from basically every single other country on Earth to enter with a Visa on arrival
D1j0e TIL Tennessee was the only state in the USA that the Emancipation proclamation didn't cover. Instead the state chose to ratify the 14th amendment on their own in 1866.