This is the best thing you’ll see today
— James Lucas (@JamesLucasIT) January 22, 2026
Carl Sagan explains how Eratosthenes of Cyrene, the chief librarian at the Library of Alexandria, deduced that the Earth was round and calculated its circumference 2,200 years ago. pic.twitter.com/t9UFgsoSSW
Categories: Articole de interes general
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