"This list of astronomical resource sites has been created by the High Energy Astrophysics Science Archive Resarch Center (HEASARC) at NASA's Goddard Space Flight Center. It is intended as a resource for users who have a general interest in astronomy.
Higher Education focuses on supporting institutions at this education level by strengthening their research capabilities as well as providing opportunities that attract and prepare increasing numbers of students for NASA-related careers.
The SAO/NASA Astrophysics Data System (ADS) is a Digital Library portal for researchers in Astronomy and Physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic databases containing more than 8.5 million records: Astronomy and Astrophysics, Physics, and arXiv e-prints.
A collection of publicly available physics and astronomy online resources selected by Library of Congress staff. Attention: some full-text content of selected databases may be restricted to subscribers and/or subscribing institutions.
"Martin V. Zombeck's Handbook of Space Astronomy & Astrophysics is now on-line. Published by Cambridge University Press, this handbook has become an essential reference for space astronomy and astrophysics.
The SIMBAD astronomical database . . . brings together basic data, cross-identifications, observational measurements, and bibliography, for celestial objects outside the solar system: stars, galaxies, and nonstellar objects within our galaxy, or in extern