Astronomy

:This article is about the science branch. For information about the magazine, see Astronomy (magazine).

External links

• Astronomy News - Daily Astronomy provides current news and information pertaining to all areas of astronomy, plus free news feeds for webmasters.

Organizations

• American Association of Variable Star Observers
• American Astronomical Society
• Astronomical Society of the Pacific
• Astronomical Society of Southern Africa
• Astronomical Society of Southern New England
• Cassini Imaging Laboratory - Stunning images of the planets taken by the Cassini exploratory spacecraft
• Czech Astronomical Society
• Durham Region Astronomical Association
• European Southern Observatory
• Hawaiian Astronomical Society
• Herzberg Institute of Astrophysics
• Inter-University Centre for Astronomy and Astrophysics
• National Optical Astronomy Observatories
• North York Astronomical Association
• Open Encyclopedia Project - Astronomy Section.
• Royal Astronomical Society of Canada
• Royal Astronomical Society (UK)
• Royal Astronomical Society of New Zealand
• Saint Louis Astronomical Society
• Scientia Astrophysical Organization
• Society for Popular Astronomy (UK)
• International Astronomy Youth Camp (IAYC)

References: formulas and constants

• Astronomy Formulas
• Astronomical Constants Index
• Zombeck's Handbook of Space Astronomy and Astrophysics

Other external links

• Deep Sky Astronomy
• Astronomy facts and information
• Astrometry and Celestial Mechanics
• Astronomy sites for educators
• Astronomy news (ger.)
• Los Alamos Astrophysics e-Print Database
• Astronomy Picture of the Day
• Bruce Medalists (annual astronomical award since 1898)
• Islamic and Arab Astronomy
• University of Ottawa's Astronomy Knowledge Base
• Space.com A popular site for Astronomy
• About northern lights
• Universe Today Space and astronomy news
• Virtual Sky A portal to images of the night sky
• NightSky Live NSL Project Home
• About stars and planets