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TIL the homochirality of biological molecules is exclusively a feature of life on Earth. Extraterrestrial samples contain largely racemic compounds, and common organic syntheses always yield racemic mixtures. It is not known to science why that is the case.

Read more pmc.ncbi.nlm.nih.gov

via reddit.com

PYlEe TIL that in 67 AD, the Roman Emperor Nero participated in the Olympics, bribing the organizers to postpone the games for a year. Nero won every contest, even one which he left the race after being thrown off his chariot. He was removed from the list of winners after his death.
GAeo4 TIL Princess Zelda was named after Zelda Fitzgerald an American novelist, dancer, socialite, and wife of novelist F. Scott Fitzgerald (Writer of The Great Gatsby).
X00nR TIL Apollo 16 astronaut Charlie Duke believes that Earth was created 6,000 years ago despite picking up the oldest moon rock known to man dated 4.46 billion years old.
W4oB TIL Tigers have striped skin not just striped fur. The stripes are like fingerprints and no two tigers have the same pattern.
pYnbe TIL one of Dwayne 'The Rock' Johnson's first TV roles was fighting Seven of Nine on Star Trek Voyager