Daily Almanac for
Oct 13, 2008
Search White Pages
Info search tips
Bio search tips

Encyclopedia

astronomy

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.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

    • Cite
    • Print
    • Bookmark

More on astronomy from Infoplease:

See more Encyclopedia articles on: Astronomy: General