Database by Subject Category: See Research Port, College Park only
- Description: 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 8.1 million records: Astronomy and Astrophysics, Physics, and arXiv e-prints"
- Host URL: http://adsabs.harvard.edu/
- Vendor: Harvard-Smithsonian Center for Astrophysics
- Restrictions: Terms and Conditions