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TIL Ten days after the Chernobyl disaster, further risk of massive thermal explosion was identified, then three men known as “The Chernobyl divers” volunteered to swim through pooled water under leaked reactor to find and release the safety valves. They died few days later due to radiation exposure

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GA7a4 TIL - As the Titanic departed on its maiden voyage, she almost had a collision with SS New York, who broke free of her moorings and swung towards Titanic. The quick actions of a nearby tug saved the day and allowed the liner’s maiden journey to continue with just a small delay.
e0XY5 TIL we have left so much waste on the moon including robots, spacecraft parts, moon buggies and much more hardware. "The least charming are 96 bags for poo, urine and vomit that scientists, being scientists, are keen to get their hands on should the opportunity arise."
78LvX TIL that first photograph of Earth from outer space is 78 years old. It was taken by V-2 No. 13, a modified nazi ballistic missile. The V stands for Vergeltungswaffe which means Vengeance Weapon.
OG877 TIL Bison were among the first animals in the National Zoo (DC) & they were actually the inspiration for the zoo.
PpdE TIL 70% of African-American children and 58% of Hispanic children do not know how to swim. TIL African-American children drown at a rate nearly three times higher than white children.