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TIL The Vatican has a telescope in Arizona. The Vatican Advanced Technology Telescope (VATT) is part of the Mount Graham International Observatory and is operated by the Vatican Observatory, one of the oldest astronomical research institutions in the world.

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78aRL TIL that Mary and Rhoda from “The Mary Tyler Moore Show” reunited in a 2000 movie but plans for a new series were abandoned due to bad reviews
QNl99 TIL Explorer James Cook charted "Sandy Island" near Australia, but it does not seem to exist and was not removed from maps until 1974.
nWv8d TIL carpentry levels are also known as whiskey sticks. When the bubble level was first invented they used water, which would freeze in cold weather. People started using a mixture of whiskey and water as antifreeze in their levels.
68gw TIL that Tsar Peter III of Russia court-martialed and hanged a rat which had chewed the heads off his toy soldiers.
nnx9 TIL that those plane trails in the sky are caused by condensation, and there’s a conspiracy theory that believes they are chemicals sprayed by the government.