SIMBAD Astronomical DatabaseSave
The SIMBAD astronomical database provides basic data, cross-identifications and bibliography for astronomical objects outside the solar system. SIMBAD can be queried by object name, coordinates, other criteria (filters), and lists of objects. http://simbad.u-strasbg.fr/Simbad
The Astrophysics SpectatorSave
Articles published on this site cover current research in astronomy and astrophysics, describe our current understanding of astronomical phenomena, and comment on issues related to astronomical research. http://www.astrophysicsspectator.com/
The NASA Astrophysics Data SystemSave
The Astrophysics Data System (ADS) is a NASA-funded project which maintains four bibliographic databases containing more than 4.0 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy. http://adswww.harvard.edu/