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TIL that the concept of 'Space Marines' in fiction is almost a century old, and was first featured in a 1932 short story "Captain Brink of the Space Marines" by author Bob Olsen.

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dP9K TIL that the license plate number of Archduke Franz Ferdinand’s car, in which he was assassinated, was A III118. The official end of WWI was Armistice Day, 11/11/18
NXl9Q TIL about Twin Flame Universe — an alleged MLM-style cult where followers were encouraged to gain weight, and as the number of male members declined, female members were pressured to transition into males
rN6K0 TIL about Mallet's Mortar, a giant cannon created by the UK way back in 1857. The cannon was so massive it used cannonballs which weighed over 2,000 pounds. And it was so powerful that it could shoot those giant cannonballs a distance of 1.5 miles.
nWLbo TIL orcas can hunt great white sharks
epr75 TIL that in ancient Athens, it was illegal for a person to hit a slave who did not belong to him, because it was difficult to tell a citizen from a slave by appearance alone. So if it were legal to hit another person's slave, then people would end up mistakenly hitting citizens on a regular basis.