› added 6 years ago

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TIL that even though Jupiter's moon Io ("EYE-oh") has no water, it still has waves. The force from the gravity of Jupiter and its other massive moons pulls Io's surface up and down on all sides causing waves of rock up to 100 meters (328 ft.) high.

Read more spaceplace.nasa.gov

via reddit.com

MxR7 TIL that in the US Civil War, the Union dug a mine-shaft under a heavily defended Confederate position, and then detonated 8,000 pounds of gunpowder, instantly killing ~300 Soldiers and starting a battle during the Siege of Petersburg
KYvwR TIL that LBJ took his oath of office on a Roman Catholic missal from JFK's desk despite not being Catholic; he mistook the missal for a Bible.
b91A4 TIL a baby born while a war is going on is more likely to be male
vjGK TIL the ‘Shag Harbor UFO Crash’ (1967, Nova Scotia, Canada) was one of the few such incidents where a Government agency formally declared UFO involvement.
7r6JM TIL about Sandra Perron, the first female infantry officer in the Canadian Army. Viewed as a threat by the male officers, she was beaten, tied to a tree, and left in the snow for two hours without boots. Her experience forced the army to revise its procedures to prevent harassment.