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TIL the most distant individual star we've ever seen, Earendel, was detected because of a chance alignment of the Hubble telescopes instruments and a huge galaxy cluster that warped space and acted as a gravitational lens.

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woAw6 TIL of Vanessa Lawrence, a woman who was on the 91st floor of the World Trade Center (North Tower) as Flight 11 crashed into it, and survived with only a cut on her foot
PrPe TIL a coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy
9Y6DX TIL before police used fingerprints to identify individuals, they used a system called Bertillonage which used several measurements of different body parts. It lost popularity when Leavenworth prison had two inmates with the same name, measurements, and physical appearance.
NXZL1 TIL that little extra flap of skin that some dogs and most cats have on their ears is called a Henry's pocket
X6gj TIL Allie Brosh’s (of Hyperbole and a Half) comic on depression is considered “one of the best contemporary portraits of the condition” by psychologists.