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TIL: Killer Whale is a mistranslation of Whale-Killer - Orcas are part of the dolphin family and hunt whales

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nMWb TIL The Concorde supersonic jet stretched during flight due to the heat it generated. On its final flight the crew placed their hats into a crevice in the floor which appeared during the flight, as the aircraft cooled the crevice closed, permanently sealing their hats in the aluminum airframe.
oXGE TIL of Whataboutism, a propaganda tactic used in the Soviet Union to discredit critics. When a criticism was posed, they would respond with “What about ____”, followed by a bad event from the west in the past.
5WBp TIL that preventing an abort of the Apollo 11 mission has been attributed to the work of Margaret Hamilton, the lead flight software designer for Project Apollo. She was 31 when the lunar module landed on the moon, running her code, and is credited for coining the term “software engineering.”
6Ed47 TIL that astronauts have reported the experience of seeing flashes while they are in space, even when their eyes are closed. These flashes are due to cosmic radiations affecting the retina.
E1wMp TIL that Porsche sells no more than two identical Porsche 911s every year