Link
Astronomical Journal
- The NASA Astrophysics Data System (ADS)
- e-Print archive (e-Print)
- Astrophysical Journal Electronic Edition (APJ)
- The Astronomical Journal (AJ)
Astronomical Sites
- American Astronomical Society (AAS)
- Hubble Space Telescope (HST)
- National Aeronautics & Space Administration (NASA)
- Image Reduction & Analysis Facility (IRAF)
- European Space Agency (ESA)
- NASA/IPAC Extragalactic Database (NED)
- The Canadian Astronomy Data Centre (CADC)
Astronomical Databases
- SDSS
- 2MASS
- HEASARC
- Hipparcos and Tycho Catalogues
- ROSAT
- SkyView
- COMPTON Observatory
- Einstein Observatory Data Archive
- Astronomical Catalogs
- Small Solar System Bodies
- Planetary Data System
- SIMBAD
- Solar Eclipse Bulletins
- COBE
- W3Browse
Observatories and Projects
- Pan-STARRS Project
- Lunar and Planetary Institute
- Apache Point Observatory
- OGLE - Optical Gravational Lensing
- Jet Propulsion Lab (JPL)
- NOAO
- Astronomical Society of the Pacific
- Hubble Space Telescope
- NRAO
- Effelsberb Radio Telescope, Germany
- Caltech IPAC