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TIL that according to the Inflation theory, our unobservable universe may be 10,000,000,000,000,000,000,000,000,000,000 times larger than the already mind-bogglingly massive observable universe.

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BrEWb TIL When Teddy Roosevelt led the Rough Riders up San Juan Hill, the gun he carried was a .38 Colt revolver salvaged from the wreck of the USS Maine. The USS Maine exploded outside Havana in early 1898 and the pistol was given to him by his brother-in-law.
eavb TIL Christian Bale’s stepmother, Gloria Steinham, was a feminist who protested the 1991 publication of the novel, American Psycho, due to its portrayal of violence toward women. In 2000, Bale went on to star as the title character of the novel’s film adaption.
Egm4P TIL that Mehmed the Conqueror spared the lives of young men condemned to death if he found them attractive, and added them to his harem.
J1pG8 TIL an entomologist in Colorado wrote a love song about the Cicada mating season to help people understand why they’re so loud.
jONE TIL scientists now have the ability to use a 3D printer to make complex chunks of growing muscle, cartilage, and bone.