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TIL the constellation Crux was once high enough to be visible to the ancient Greeks. Precession (the wobbling of Earth's axis) has lowered it

Read more constellation-guide.com

via reddit.com

yZoa TIL there is a birth deformity called bilateral Stahl’s ears which can result in a person being born with elf-like ears
xVbl7 TIL that most Americans wake up between 6-6:30am and that by 5:30am 20% of people are awake.
oRmQR TIL that Orson Welles was originally supposed to voice "Star Wars" villain Darth Vader, but the role was ultimately given to James Earl Jones as George Lucas feared that Welles’ voice would be too recognizable.
gVkA TIL that Sir Arthur Conan Doyle, creator of Sherlock Holmes, helped get two falsely accused men out of prison after solving their previously closed cases.
EOJx TIL that the fingerprints of koalas are virtually indistinguishable from those of humans, so much so that they could be easily confused at a crime scene.