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TIL: NASA has made hundreds of thousands of technical reports covering technology, research, and science available through a free and searchable archive on the Internet.

Read more nix.nasa.gov

via reddit.com

gr6nX TIL The bomb dropped on Hiroshima (Little Boy) converted only about 0.7 grams of mass to energy. This is roughly 1/3 the mass of a dime.
AR87 TIL The United States is the most armed nation with 88.8 guns per 100 people.
epA0L TIL the world's fastest accelerating car needs just 12.3 metres to reach 100 km/h (62 mph)
9lAB TIL that all the American flags placed on the moon are now white due to radiation from the sun.
RKGl TIL during pre-Civil War America, when free, blacks disproportionately became slave masters. About 28 percent of free blacks owned slaves—as opposed to less than 4.8 percent of southern whites, and dramatically more than the 1.4 percent of all white Americans who owned slaves.