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todayilearned

Jul 07, 2020

TIL that metal (eg. coins, nails...) has no smell at all. The distinct smell we associate with metals is just the metal reacting with oils and other dirt on our hands. If you wash a coin thoroughly and smell it without ever touching it, it won't have any smell at all.

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todayilearned

Dec 23, 2019

TIL astronaut Wally Schirra would take pictures of his frozen pee as it floated through space, glinting with sunlight. The pee-flakes looked like a beautiful starfield, he said. One astronomer saw a photo & asked what constellation it was, and Schirra said "Jocelyn, that's the constellation Urion."

constellations fireflies friendship seven john glenn mercury orbit podcast podcast iya 365

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