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Astronomy (Greek: αστρονομία = άστρον + νόμος, astronomia = astron + nomos, literally, "law of the stars") is the science of celestial objects (e.g., stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (e.g., auroras and cosmic background radiation). It is concerned with the evolution, physics, chemistry, and motion of celestial objects as well as the formation and development of the universe. Astronomical observations can be used to test fundamental theories in physics, such as general relativity. Theoretical astrophysics complements observational astronomy in that it seeks to explain astronomical phenomena.
Astronomy is one of the oldest sciences. Astronomers of ancient Greece practiced a scientific methodology, and advanced observation techniques may have been known much earlier (see archaeoastronomy). Historically, amateur astronomers have contributed to many important astronomical discoveries, and astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena.
Modern astronomy is not to be confused with astrology, the belief system that claims human affairs are correlated with the positions of celestial objects. Although the two fields share a common origin, they are fundamentally different: astronomers employ the scientific method, whereas astrologers do not.
More on [ Astronomy ]
3.14159 - Astronomy News http://is.gd/5NYhs
blobrana (blobrana) Wed, 06 Jan 2010 12:05:01 -0000
3.14159 - Astronomy News http://is.gd/5NYhs
Today's image: An horse in the moonlight. Submitted by: Dav. http://astronomy.fm/aapod/ #astronomy
AAPOD (AAPOD) Wed, 06 Jan 2010 12:00:07 -0000
Today's image: An horse in the moonlight. Submitted by: Dav. http://astronomy.fm/aapod/ #astronomy
enough astronomy for today? ;-)
gianluca_r (Gianluca Riccardi) Wed, 06 Jan 2010 11:58:54 -0000
enough astronomy for today? ;-)
@Bristol247 @BristolEditor That was NASA's astronomy picture of the day for yesterday: http://bit.ly/68q1jF
VinceMH (Vince M Hudd) Wed, 06 Jan 2010 11:50:07 -0000
@Bristol247 @BristolEditor That was NASA's astronomy picture of the day for yesterday: http://bit.ly/68q1jF
What textbook on astronomy should I buy? (http://bit.ly/796u24)
paranominal (paranominal) Wed, 06 Jan 2010 11:47:00 -0000
What textbook on astronomy should I buy? (http://bit.ly/796u24)
Worldnews.com - NASA Telescope captures action-packed image of cloud shaped galaxy http://bit.ly/5zhG0D #space #astronomy #nasa
humbertolima64 (Humberto Lima) Wed, 06 Jan 2010 11:46:26 -0000
Worldnews.com - NASA Telescope captures action-packed image of cloud shaped galaxy http://bit.ly/5zhG0D #space #astronomy #nasa
Astrofunny.com - Contains jokes, funny facts, and photos.
Cosmic Debris - A look at life on Mars, anti-matter, plain old gravity and other cosmic phenomena from our favorite frivolous essayist, Gary Greenberg.
Meta Description: [ A free humor column including science fiction humor, family humor, observational humor and other types of humor along with a few serious thoughts by award-winnning newspaper columnist Gary Greenberg. ]
Spacecraft Manual and Survival Hints - A futuristic look at spacecraft of the future. Color illustrations. Road rules, hazards, places to visit.
StarKeith.net - provides information and services to the operatives of Provides information and operatives to StarKeith and the Federation of Keith who are currently stationed on planet earth, as well as to the general populous of earth. Includes ship design, community information, and other links.
The Galactic Core Gazette - Newspaper-style lampoon of astronomy and pseudo-science topics.
Meta Description: [ Astronomy and science humor and satire for the light-hearted amateur astronomer. ]
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