› added 11 months ago

42

TIL About the Solar gravitational lens, where in deep space you can use the Sun as a telescope lens.

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D14gp TIL More than 85% of residents of the United States believe they are less biased than the average American.
x6mAD TIL about the Great Green Wall of Africa that is made to keep the sahara desert from expanding
Z8e8Q TIL of Barra Airport in Scotland, the only airport in the world where scheduled flights use a tidal beach as the runway, thus the flight schedule varies with the tides.
epP9J TIL a 2,000-year-old sapphire ring believed to have been owned by Roman Emperor Caligula sold for £500,000 in 2019. The sky blue ring also has an etching on it that's thought to depict Caligula's fourth and last wife, Caesonia.
RmRQ TIL that a pilot survived after spending 15 minutes outside the plane when he was sucked out of the cockpit due to the windshield falling off with only two stewards holding onto his legs. The co-pilot managed to safely land the plane.