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TIL this high five was invented less than 50 years ago in 1977

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a89Z9 TIL about Phobos 1, a Soviet space probe launched to study Mars' moon. It shut down before ever reaching Mars because a technician left out a single hyphen in one of the keyed commands. All commands were supposed to be proofread by a computer before being transmitted, but the computer malfunctioned.
bDXZ TIL English words for livestock (cow, sheep, chicken) are Germanic-based and the words for meats (beef, mutton, poultry) are French-based. This is because the people who raised the animals were Anglo-Saxon peasants and the people who ate them were Norman aristocrats.
dQAE TIL Supernatural fans used the hash tag #LuciferIsComing for the 5th season premiere when Lucifer is released, but unaware Twitter users responded with numerous #GodIsHere hash tags, leading both topics to be blocked from Twitter.
e0nJg TIL dying stars cause space to smell like "hot metal, diesel fumes and barbecue." Astronauts have also compared the smell of the moon to "spent gunpowder."
xV5K5 TIL Bill Murray and Harold Ramis clashed during the filming of Groundhog Day. Murray wanted the movie to be more contemplative while Ramis saw it as more of a comedy. After filming was completed the two didn't speak to each other for 21 years, only reconciling shortly before Ramis' death in 2014