Alternative 60
Archaeoastronomy 81
Astrophysics 61
Calendars and Timekeeping 51
Cosmology 101
Dark Sky 85
Eclipses, Occultations and Transits 71
Extrasolar Planets 37
Extraterrestrial Life 114
Galaxies 46
Interstellar Medium 13
Solar System 644
Star Clusters 14
Stars 114
Academic Departments 9
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Business 403
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History 171
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Publications 45
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Observatories 247
Planetariums 103
| | Astronomy and Space - Science, School Time, Kids and Teens 317
Astronomy, Alternative - Anomalies and Alternative Science, Science 60
Physics - Science 4,564
Space - Technology, Science 1,552
 Absolute AstronomyAbsolute Astronomy
 Facts and statistical information about planets, moons, constellations, stars, galaxies, and Messier objects.
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Astronomical Applications Department, U.S. Naval ObservatoryAstronomical Applications Department, U.S. Naval Observatory
 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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Astronomical Optical InterferometryAstronomical Optical Interferometry
 The use of multiple telescopes to produce high resolution images - commonly used at most modern observatories. A literature review article.
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Astronomical Pseudo-Science: A Skeptic's Resource ListAstronomical Pseudo-Science: A Skeptic's Resource List
 List of links for those, who want to examine theories that are on the fringe of accepted scientific thought that are related connected to astronomy. A few examples are astrology, UFO's, the "Face" on Mars, and ancient astronaut theory.
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AstronomyAstronomy
 Introductory article provided by Citizendium, a developing encyclopedia project.
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Astronomy and SpaceAstronomy and Space
 Explores the latest research in astronomy, with overviews of planets and deep-space issues, oberving tips for constellations and what can be seen in the sky tonight.
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Astronomy Education and OutreachAstronomy Education and Outreach
 General astronomy tutorial, education links, web courses, documents at the UCSD Center for Astrophysics and Space Sciences.
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Astronomy Facts and TriviaAstronomy Facts and Trivia
 Fun facts and trivia relating to astronomy, space, science fiction movies. Most trivia items are submitted by users.
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Astronomy for AllAstronomy for All
 Index with graphics and illustrations about stars, the Solar System, cosmology and Galileo.
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Astronomy NetAstronomy Net
 Resources, searchable forums and searchable lists of organizations providing astronomy services.
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Astronomy OnlineAstronomy Online
 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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Astronomy TodayAstronomy Today
 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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AstroWebAstroWeb
 Astronomical internet resources from the National Radio Astronomy Observatory.
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An Atlas of the UniverseAn Atlas of the Universe
 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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Cosmos PortalCosmos Portal
 Offers information on astronomy and space science including news, events, blogs, images, videos and links to other sites. It is written and compiled by experts.
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Elegant UniverseElegant Universe
 Provides introductory information about galaxies, the big bang, stars, the solar system, planets, asteroids, comets, astronomical events and astronomy related news.
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Eric Weisstein's World of AstronomyEric Weisstein's World of Astronomy
 A web encyclopedia. Over 500 entries, ranging from definitions to full articles.
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Infrared AstronomyInfrared Astronomy
 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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Logarithmic Maps of the UniverseLogarithmic Maps of the 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.
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MuseMuse
 Multi Unit Spectroscopic Explorer. A second generation integral field spectrograph for the VLT. Proposed to European Southern Observatory (ESO) by the Centre de Recherche Astronomique de Lyon (CRAL).
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The Naming of StarsThe Naming of Stars
 Leaflet from Royal Greenwich Observatory.
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A Review of the Universe: Structures, Evolutions, Observations, and TheoriesA Review of the Universe: Structures, Evolutions, Observations, and Theories
 A retired physicist surveys the entire extent of the universe touching upon phenomenon from the largest to the smallest size and covering the entire cosmic interval from past to present.
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Space.com - The Greatest Myths, Hoaxes & Mysteries in Astronomy and Space ScienceSpace.com - The Greatest Myths, Hoaxes & Mysteries in Astronomy and Space Science
 Article briefly discussing 21 topics.
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Stars and PlanetsStars and Planets
 Information about interesting stars and planets in the galaxy, as well as astral bodies outside the Milky Way. Includes photos.
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Universe Wiki: Galaxies, Stars and Space DirectoryUniverse Wiki: Galaxies, Stars and Space Directory
 New Universe web directory with articles on a wide range of astronomical and cosmological topics.
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