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			November 22, 2009

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astronomy, Astronomy, General

Related Category: Astronomy, General

astronomy, branch of science that studies the motions and natures of celestial bodies, such as planets, stars, and galaxies; more generally, the study of matter and energy in the universe at large.

Sections in this article:

Introduction
Ancient Astronomy
Development of Modern Astronomy
Modern Techniques, Discoveries, and Theories
Bibliography

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