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TIL Astronauts mixed concrete on the space station for the first time in 2019. Thanks to a lack of gravity-induced sedimentation, the cement's density was more uniform, making it stronger. But it also developed large internal air pockets, making it more porous.

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ZJ1D TIL Sky News UK initially reported that “the entire eastern seaboard of the United States has been decimated by a terrorist attack” on 9/11
m1wyy TIL that when adjusted for monetary inflation, "Gone witth the Wind" is still the highest-grossing film in history.
896Z TIL that the deepest artificial hole on Earth is the Kola Superdeep Borehole, in Russia. It is 12,262m deep, which is 1% of the distance from Earth’s center.
LReP TIL That for the past 4 election cycles a man named Vermin Supreme has campaigned on a platform of time travel, zombie based alternative energy, mandatory tooth brushing laws, and a free pony for every American.
oRVNK TIL the lunar surface contains 1.1 million metric tons of helium-3. Just 25 tons would meet all of the US energy needs for a year. Helium-3 fusion produces charged particles which are not radioactive. Helium-3 is also renewable, being constantly deposed by solar winds on the surface of the Moon.