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TIL that the most mass a planet can have is ~10-13x the mass of Jupiter. After this point, it's own sheer gravity begins to cause nuclear fusion and the body is classified as a brown dwarf (also called a failed star).

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4kL5o TIL of the President's (Bush 43) 100 Degree Club. Run a 5K or Bike 10mi at his Crawford Ranch once the thermometer hits triple digits, and you get a custom Under Armour shirt as well as a picture with the President.
KmvG TIL India has more people using the Internet than the entire population of the United States
v1QJ4 TIL that during the filming of Candyman (1992), director Bernard Rose employed a hypnotist to put lead actress Virginia Madsen into a genuine trance during portions of the film
xDrb TIL a cat named Tibbles once started bringing dead birds to a lighthouse that were discovered to be a new species, the Stephens Island wren. They went extinct shortly after and Tibbles the cat was accused of being the only single living creature to eradicate a species.
Egr0X TIL, Usain Bolt Foundation, donated J$1,500,000.00 to his former Alma mater (William Knibb Memorial High School),