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Planetary science / Scale modeling / Orrery / Armagh Observatory / Planet / Solar System / Antikythera mechanism / Celestial spheres / Astronomical unit / Astronomy / Space / Science


© 2013, Astronomical Society of the Pacific 390 Ashton Avenue, San Francisco, CANo. 82 • Winter 2013 www.astrosociety.org/uitc A Human-Powered Orrery: Connecting Learners with the Night Sky
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Document Date: 2014-05-22 23:47:49

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