Astronomy Resources

Space Agencies & Institutions

• NASA — Space exploration, imagery, and scientific research
• ESA — European Space Agency
• JPL — Jet Propulsion Laboratory — solar system data and missions
• STScI / Hubble — Hubble and James Webb Space Telescope imagery
• ESO — European Southern Observatory

Observing Organizations

• AAVSO — American Association of Variable Star Observers — variable star data, charts, and observing programs
• Astronomical League — Federation of amateur astronomical societies — observing programs and awards
• British Astronomical Association — Observing sections for variable stars, deep sky, planets, and more
• Royal Astronomical Society of Canada — One of the oldest astronomical organizations in the world, with observing programs and publications
• International Dark-Sky Association — Light pollution awareness and dark sky preservation

Databases & Catalogs

• SIMBAD — CDS astronomical object database — identifications, coordinates, and bibliography
• NED — NASA/IPAC Extragalactic Database
• VizieR — Astronomical catalog service with over 20,000 catalogs
• Washington Double Star Catalog — Comprehensive double and multiple star data

Magazines & News

• Sky & Telescope — The essential magazine for amateur astronomy since 1941
• Astronomy Magazine — Observing guides, equipment reviews, and science news
• Universe Today — Space and astronomy news
• Space.com — Space exploration and astronomy coverage
• Actual Astronomy — Podcast and community for amateur visual astronomers

Tools & Software

• Stellarium — Free open-source planetarium for desktop and mobile
• Heavens-Above — Satellite pass predictions and sky charts
• CelesTrak — Satellite orbital elements and tracking data
• Astrometry.net — Automatic plate solving for astrophotography

Imaging & Community

• Astrobin — Astrophotography image hosting and community
• Cloudy Nights — Telescope reviews, forums, and observing reports
• Astronomy Picture of the Day — Daily curated astronomy image from NASA