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TIL after a passenger airline was shot down after accidentally entering Soviet airspace, President Ronald Reagan decided to authorize the U.S. military’s satellite-based global positioning system (GPS) for civilian use in order to prevent similar tragedies.

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Rvl6 TIL the person who wrote “The Internet is for Porn” also wrote “Let It Go.”
VMJE0 TIL before the discovery of x-rays or the popularity of xylophones, alphabet books struggled with examples for "X is for...". Some used Greek figures like Xerxes and Xantippe, but others were lazy and just said "X is a letter, like this X".
4rJo TIL Barron Hilton announced that he is leaving 97% of his $2.3bn fortune to charity, slashing his granddaughter Paris Hilton’s inheritence, as well as her potential eligibility.
nexed TIL that The Beatles watched George Harrison lose his virginity and they cheered in the end.
xV8XD TIL A helicopter pilot flew to 40820 feet, setting a world record for the highest altitude reached by a helicopter. However, when he started to descend, the engine failed, but he safely landed the helicopter with absolutely no power - a world record for the highest unpowered descent by a helicopter.