Astronomy Online Resources

Like the real universe, the online universe of astronomy information and resources is expanding ever more rapidly. No single list of astronomy- or space-related websites can be 100 percent complete. The following links, compiled and updated by the editors of Sky & Telescope, are geared toward amateur astronomers and space buffs, but professional astronomers or educators may also find them handy.

Looking for an astronomy club, observatory, museum, or planetarium near you? Check out our Clubs & Organizations listings instead.

If you’d like to recommend an addition to our list, or if you discover a problem with any current entry, please let us know by sending e-mail to info@SkyandTelescope.com.

List of Citizen-Science Projects

The internet has become a priceless tool for the citizen-science movement, in which private citizens all over the world can make meaningful contributions to science. With as little as a computer and some curiosity, you can help scientists determine targets for space telescopes, or look for signs of life on Kepler planets. Some projects,...

List of Amateur Research Projects

Modern technology allows amateurs around the globe to collaborate in ways never before possible. The following is a collection of some of the research projects we find most interesting, many of which involve collaboration with professional astronomers at universities and other research organizations. These projects generally require more sophisticated equipment or technical expertise than...

Equipment & Telescope Making Links

Affordable Astronomy Equipment Reviews Antique Telescope Society Astromart AstronomyBoy.com Astronomy Ratings and Info Berthold Hamburger's ATM Page Camera Obscuras Cookbook Camera Home Page Frequently Asked Questions of the ATM Mailing List How to Build a Dobsonian Telescope Lin Robertson's Build Your Own Dobsonian Telescope Mike Weasner's Meade ETX Page NexStar Resource Site The Spectrohelioscope...

Indexes of Astronomy Web Sites

AstroGuide AstronomyLinks.com Astrosights AstroWeb Cosmic Link: Links to the Cosmos Galacticsurf Google Directory: Astronomy Loch Ness Productions Planetarium Compendium Mike Boschat's Astronomy Page Star*s Family of Astronomy Resources Yahoo! Science:Astronomy

Annual Stargazing Events

NameLocationDate Winter Star Party West Summerland Key, FL Feb Hodges Gardens Star Party Florien, LA Mar Wagman Winterfest Russellton, PA Mar Mid-South Star Gaze French Camp, MS Apr Cherry Springs Star Party Coudersport, PA Apr/May Astronomy Day (spring) Everywhere! Apr/May Space Day Washington, DC May Northeast Astronomy Forum and Telescope Show Suffern, NY May...

Astronomy Education Links

Organizations Astronomical League Observing Programs Youth Resources Astronomical Society of the Pacific (ASP) Astronomy Education Review Campaign for Dark Skies Challenger Center for Space Science Education Challenger Space Science Center of Arizona Dark-Sky Switzerland European Association for Astronomy Education Euro Space Center (Belgium) International Association for Astronomical Studies (IAAS) International Dark-Sky Association (IDA) National...

Image & Animation Links

Research Institutions Anglo-Australian Observatory ARC Telescope Astronomical Institutes of the University of Bonn Big Bear Solar Observatory European Southern Observatory Great Images in NASA Harvard-Smithsonian Center for Astrophysics Hubble Space Telescope Institute for Astronomy NASA's Observatorium Image Gallery NASA's Planetary Photojournal Nordic Optical Telescope Ohio State University Astronomy Dept. Stardial - University of Illinois...

Online Data and Catalog Links

Astronomical Data Center (ADC) Astrophysical Data System (ADS) Canada Astronomical Data Center (CADC) Digitized Sky Survey Double Star Library JPL's Solar System Dynamics Group NASA/IPAC Extragalactic Database (NED) National Space Science Data Center (NSSDC) NGC/IC Project Planetary Data System (PDS) SkyView Solar Terrestrial Dispatch Star Data Pages Strasbourg Astronomical Data Center U.S. Naval Observatory's...

Amateur Research Societies

The Amateur Sky Survey (TASS) American Association of Variable Star Observers (AAVSO) American Lunar Society Association of Lunar & Planetary Observers Astronomy and Astromicroscopy Center for Backyard Astrophysics Dutch Meteor Society Galilean Satellite Eclipse Timings Grup d'Estudis Astronomics (Spain) International Amateur-Professional Photoelectric Photometry (IAPPP) International Meteor Organization International Occultation Timing Association (IOTA) IOTA Asteroid...

Links for Observing & More!

Observing Guides Anthony Mallama's Lunar Eclipse Page Astra's Star Gate Astronomica Langrenus Astronomical League Youth Resources Astronomy with a 60-mm Refractor Atmospheric Optics Aurora Page Astronomy and Astromicroscopy Binary Stars Ray Cash's Deep-Sky Page Comets and Meteor Showers Ben Crowell's BinoSky Deep-Sky.org Denis Fell's Astro Page Dennis Ward's "The Silicon Sky" Eagle's Eye On...

Online Astronomy Newsletters & Web Portals

AmSky AstroNews Astronomibladet (Danish) Astronomie.com (German) Astronomy Education Review The Cosmic Mirror Dave's Astronomy Magazine The Lunar Observer Marsbugs: The Electronic Astrobiology Newsletter MeteoriteTimes.com North American Skies Regulus! Royal Astronomical Society of Canada SPACE.com SACNEWS ScienceWeek Skylights Universe Today

Astronomy-Related Mailing Lists

E-mail is the most basic tool of the Internet. For many, sending personal or professional correspondence over the wire has become a necessity. But e-mail is not limited to sending letters just to individuals. Among the various auxiliary services available by e-mail are mailing lists. Some mailing lists are one-way and provide news and...

Astronomy Blogs & Podcasts

Blogs SkyandTelescope.com's Blogs Above the Clouds Aditi's Astro-Area Astronomy Blog Astroprof's Page A Voyage To Arcturus Kaustav Bhattacharya's Astro London boyruageek James Butler's Astro Diary Centauri Dreams Clear Skies on Demand Varun Khetarpal's Explore Universe Space Blog Rob Kosinski's Dirty Skies Megan's Blog Ian Musgrave's Astroblog NYC Nova Hunter Observing the Sky Online Scratchpad...

Professional Research Links

American Astronomical Society (AAS) American Meteor Society Astrophysical Institute of the Canary Islands Berkeley Illinois Maryland Association (BIMA) Brown University Planetary Geology California Space Institute Canadian Space Agency Meteorites and Impacts Advisory Committee Canadian Institute for Advanced Research Central Bureau for Astronomical Telegrams (CBAT) Harvard-Smithsonian Center for Astrophysics (CfA) High Energy Astrophysics Science Archive...

Magazines and Journals

Amateur Astronomy Magazine Astronomical Journal Astronomical Review Astronomie Heute (German language) Astronomy Education Review Astronomy Now Astrophysical Journal and Astrophysical Journal Letters Australian Sky & Telescope Coelum (Italian language) EurekAlert! science research news server Icarus Journal of the British Astronomical Association Mercury Meteorite! Nature The Planetarian Popular Astronomy Publications of the Astronomical Society of...

Online Star Charts

SkyandTelescope.com's Interactive Sky Chart AstroImage AstroViewer Hawaiian Astronomical Society's Storybook and Deepsky Atlas Heavens Above National Geographic's Star Chart Nearest and Brightest Stars in VRML Sky View Café Project DeepSkyMap StarGazer Java atlas Starchart Map Server Skymaps.com Weather Underground Sky Chart