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TIL the Energizer bunny was intended to be a parody of Duracell, which advertised using a pink bunny mascot as early as the 70s (15 years before Energizer). However, Energizer got the trademark first, and last year sued Duracell for selling their original pink bunny packaging in some US stores.

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LQ55P TIL Chinese checkers is actually called Sternhalma and is not related to Chinese culture or the the game of checkers and was invented in Germany in 1892.
71RO TIL a British supercentenarian died last year. Two months before his death, he told newspapers that he drank an elixir given to him by a doctor in Mumbai before WWI and was told, “drink this and you’ll live forever.”
4X5X5 TIL that the dedication page at the front of published books was originally used as a way for an author to beg a high-influence person for money.
mxxbE Short answer: It’s an optical illusion
d8GMj TIL the Hubble Ultra-Deep Field image was made from a total exposure time of just under 1 million seconds and in order to observe the entire sky to the same sensitivity the telescope would need to observe continuously for a million years