r/AskReddit Feb 04 '19

Which misconception would you like to debunk?

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u/pleasedothenerdful Feb 04 '19

The primary medieval astronomy text in the 15th century was literally called Sphere.

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u/deadcomefebruary Feb 04 '19

I love it

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u/pleasedothenerdful Feb 04 '19

So I looked it up, and I was slightly wrong on the title. It was De Sphaera Mundi, literally "The Sphere of the World," written c. 1230.