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TIL Hitler had a pet alligator(Mississippi alligator), named Saturn, now age 85, that Russians were gifted by British government and it still lives and can be seen in Moscow Zoo.

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E1kP7 TIL that even at 0 Kelvin (absolute zero), atoms continue to vibrate due the Heisenberg uncertainty principle, which states that a particle's momentum cannot be precisely determined if its position is known, and vice versa. Basically, because the atom's position is known at 0K, its momentum can't be
P00g TIL: Alexander the Great strongly promoted shaving during his reign in the 4th century BCE to avoid “dangerous beard-grabbing in combat”, and because he believed it looked tidier.
NXr7b TIL the length of a day on Mars has been known to the nearest 3 minutes since 1666. But the exact length of a day on Saturn remained a mystery until 2019.
j6w7R TIL Short Man Syndrome is real
d1rd TIL that in Texas, vertically-painted purple lines on a property boundary legally perform the same function as a fence or no trespassing sign.