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TIL the sun loses about 6 million tons of mass every second due to nuclear fusion and the solar wind. Despite losing that much material, it has only lost about 0.05% of it's original mass over the past 4.5 billion years.

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neX9W TIL that each cat species can either purr or roar, but no species can do both.
4X4ZX TIL in 2013 Disney tried to trademark the phrase, “Día de Los Muertos,” a Mexican holiday.
NgK1 TIL that on many major airlines, a pilot must eat a different in-flight meal to his co-pilot to minimise the risk of food-related illnesses compromising the flight.
69NA8 TIL Diophantus of Alexandria, a mathematician from the 3rd century, came up with many mathematical equations that took a long time to solve. The last one, Fermat's Last Theorem, was first stated in 1637 and was proved in 1995 by British mathematician Andrew Wiles.
neaWP TIL that due to the Screen Actors' Guild not allowing duplicate names, Michael Keaton had to change his name. His birth name is Michael Douglas.