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TIL that National Reconnaissance Office donated two Hubble-class telescopes to The National Science Foundation, because they were only gathering dust in a warehouse. NRO is the agency in charge of USA's spy satellities, the donation was prompted by the two telescopes becoming obsolete for spying.

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16rB7 TIL that the idea that people distribute poisoned candy on Halloween is a myth. There has never been a confirmed case of strangers injuring or killing children in this way, though some parents who have killed their children have tried to use it as a way to cover up their crimes.
xV68w TIL that thermostats sense the temperature with a strip of two different metals fastened together. Because the metals expand at different rates, it causes the strip to curve, breaking or completing the circuit at different temperatures.
ZZAp TIL that in the close up shot of Bridget von Hammersmark (played by Diane Kruger) being strangled it is Tarantino’s hands being used and she is actually being strangled because Tarantino wanted to have it as realistic looking as possible.
JlE1 TIL that typically a Boeing 747 carries 416 passengers, but when a group of Ethiopian refugees were evacuated in 1991 they managed to fit 1,122 people on board. They originally planned to board 760 people, but got to 1,122 because “ the passengers were so light”.
LkaJv TIL Butte, Montana is home to the longest-running brothel in the United States. The Dumas Brothel opened in 1890 and closed in 1982. It remains intact and the basement, where the least expensive exchanges took place, contains multiple rooms ("cribs") virtually unchanged from the early 20th century.