On March 30, 240 BC, Halley’s Comet made its first recorded perihelion passage. (Photo courtesy of NASA, from the 1987 comet passage, photographed from Easter Island.)
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March 30, 1856: The Russian Empire, the Ottoman Empire, Great Britain, France, and the Kingdom of Sardinia signed the Treaty of Paris. This ended the Crimean War.
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Today’s feature article is by our Field Gear Editor, Tom Christianson.
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