Astronomy

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Eric Weisstein's World of Astronomy

Nov 4, 2016 |
A web encyclopedia. Over 500 entries, ranging from definitions to full articles.

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Infrared Astronomy

Nov 4, 2016 |
All about infrared astronomy from NASA's infrared astronomy center: Discovery of infrared, what is infrared and infrared astronomy, history, the infrared universe, gallery, activities, discoveries,

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