Daily Almanac for
Nov 10, 2009
Search White Pages
Search: Infoplease Info search tips
Search: Biographies 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.

Sections in this article:

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

    • Cite
    • Print
    • Bookmark

More on astronomy from Infoplease:

  • The Universe - The Universe The Big Bang: Origin of the Universe The Age and Composition of the Universe Birth and ...
  • Astronomy - Astronomy The Universe The Solar System Astronomical Measurement NASA Turns 50 See also: Seasons, ...
  • Health and Science - Infoplease is the world's largest free reference site. Facts on weather, space, astronomy, explorations, inventions, aviation, computers, science, and the Internet.
  • Astronomy Websites - Astronomy Websites American Astronomical Society: www.aas.org Asteroid and Comet Impact Hazards: ...
  • The Leonid Meteor Shower - The Leonid meteor shower is a barrage of shooting stars that appears every year on or about November 17.

See more Encyclopedia articles on: Astronomy: General