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Astronomical Applications Department, U.S. Naval Observatory - http://aa.usno.navy.mil/
Computes the position, brightness, and other observable characteristics of celestial bodies, as well as the circumstances of astronomical phenomena. Includes information on calendars and related topics. |
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Astronomy Education and Outreach - http://casswww.ucsd.edu/public/astroed.html
General astronomy tutorial, education links, web courses, documents at the UCSD Center for Astrophysics and Space Sciences. |
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AstroWeb - http://www.cv.nrao.edu/fits/www/astronomy.html
Astronomical internet resources from the National Radio Astronomy Observatory. |
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Eric Weisstein's World of Astronomy - http://scienceworld.wolfram.com/astronomy/
A web encyclopedia. Over 500 entries, ranging from definitions to full articles. |
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Absolute Astronomy - http://www.absoluteastronomy.com/
Facts and statistical information about planets, moons, constellations, stars, galaxies, and Messier objects. |
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An Atlas of the Universe - http://www.atlasoftheuniverse.com/
Contains 3D maps of the universe zooming out from the nearest stars to the scale of the galaxy and out to the surrounding superclusters and finally to the scale of the known universe. |
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Astronomy Today - http://www.astronomytoday.com/
Information and articles on astronomy, space and related topics. Also features a friendly forum and a telescope buyer's FAQ page. |
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Infrared Astronomy - http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/
All about infrared astronomy from NASA's infrared astronomy center: Discovery of infrared, what is infrared and infrared astronomy, history, the infrared universe, gallery, activities, discoveries, missions and a lot of links to IR astronomy sites. |
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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. |
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Logarithmic Maps of the Universe - http://www.astro.princeton.edu/~mjuric/universe/
Show universe in terms of distance from Earth center. Includes such things as satellites, planets, stars, nebulae, and galaxies, out to cosmic microwave background radiation from the Big Bang. |