Standard Listings Sort by: PageRank | Hits | Alphabetical |  | American Astronomical Society (AAS) - http://www.aas.org Established 1899, AAS is the major professional organization in North America for astronomers, other scientists and individuals interested in astronomy. |
|  | Astronomical Society of the Pacific - http://www.astrosociety.org Disseminates astronomical information. The ASP has become the largest general astronomy society in the world, with members from over 70 nations. |
|  | The International Astronomical Union (IAU) - http://www.iau.org Founded in 1919, has a mission to promote and safeguard the science of astronomy through international cooperation. The organization is also the internationally recognized authority for assigning designations to celestial bodies and surface features on su |
|  | Hands-On Universe - http://www.handsonuniverse.org Enables students to investigate the Universe while applying tools and concepts from science, math, and technology. |
|  | Astronomical Society of South Australia - http://www.assa.org.au Founded in 1892, is the oldest society of its kind in Australia. Its objectives are to promote the Science of Astronomy and all its branches by holding regular meetings and viewing nights, circulating current astronomical information, and encouraging popu |
|  | Astronomy Online - http://astronomyonline.org Gives overview of the solar system, the Milky Way galaxy, extrasolar planets, cosmology and astrophotography. Includes images, additional resources, and forums. |
|  | Absolute Astronomy - http://www.absoluteastronomy.com General facts and statistical information about planets, moons, constellations, stars, galaxies, and Messier objects. |
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