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    Measuring the Universe

    Measuring the Universe
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    by: Kitty Ferguson

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    Measuring the Universe

    Measuring the Universe

    By: Kitty Ferguson

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    Published
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    Overview

    Publisher Description

    More than 2,000 years ago, Eratosthenes, in Alexandria, used a stick, a hole in the ground, sunllght at summer solstice, and elementary geometry to measure the circumference of the Earth with surprisi...

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