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Carl Sagan - Cosmos - Eratosthenes

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Published on 26 Jun 2022 / In Science

Carl Sagan - Cosmos - Eratosthenes. In this segment of Cosmos Carl Sagan shares the brilliance of the librarian of the Library of Alexandria, Eratosthenes. See how a simple experiment, combined with logical science proves the earth is a curved sphere centuries before NASA.

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