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801

TIL that 85 million years before butterflies existed, there was another insect that looked and acted exactly like a butterfly.

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rR5yo TIL that from 1838 until 1976 it was lawful to "exterminate" Mormons in Missouri (Executive Order 44)
LkdM9 TIL that it's illegal to own just one Guinea Pig in Switzerland. The law was part of a legislative push to grant “social rights” to pets that tend to get lonely.
7r9WP TIL British Flag, the Union Flag is not entirely symmetrical and can be put wrong way up
699w7 TIL - The antibiotic "Bacitracin" was named after the Bacillus bacterium species that produced it, combined with the wound it was found growing on from a patient named Margaret Treacy (using the more common spelling of Tracy)
R5xNl TIL about the North American X-15, a hypersonic rocket-powered aircraft which holds the world record for highest speed ever recorded by a crewed, powered aircraft. The X-15 reached that speed on 3 October 1967, when test pilot William J. Knight flew at Mach 6.7 (4,520 mph; 7,274 km/h).