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TIL Global Positioning System (GPS) is owned by the United States government and operated by the United States Air Force. The US makes it freely accessible to anyone with a GPS receiver but can selectively deny access to the system.

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OGGLg TIL in 2010 the US Air Force built a supercomputer out of 1760 PS3s. It was the 35th most powerful supercomputer in the world at the time and used 10% of the energy of comparable systems.
neWjG Today I learned Dr. Dre and Eminem recorded "My Name Is..." on the first day of recording tracks for the Slim Shady LP. It only took them an hour.
5Yrop TIL That the US Government invested $400 Billion in Internet Infrastructure that ISPs just never delivered on
pY0y4 TIL Astronauts aboard the International Space Station experience alternating 45 minutes of daylight and 45 minutes of darkness, meaning they witness 16 sunrises and 16 sunsets every 24 hours.
6E87Y TIL that due to the threat of a one million dollar budget overage Warner Bros. Studio gave up production of the film 'Home Alone' to 20th Century Fox. The film went on to gross 300 million dollars, shattering box office records of the time.