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Uploaded by CosmoBC on Nov 5, 2008
More on:http://www.cosmosfrontier.com/http://astronomy.cosmobc.com/http://publicdomain.cosmobc.com/http://www.cosmobc.com/First segment of NASA Connect Ancient Observatories explaining the foundations of astronomy and the how the Earth moves relative to the sun. This segment explains how the Earth's tilt creates the 4 seasons.Courtesy of NASA
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