Astrophysics Data System
| Producer | Smithsonian Astrophysical Observatory for the National Aeronautics and Space Administration (United States) | 
|---|---|
| History | 1992 to present | 
| Access | |
| Cost | Free | 
| Coverage | |
| Disciplines | Astronomy and physics | 
| Record depth | Index & abstract & full-text | 
| Geospatial coverage | Worldwide | 
| Links | |
| Website | ui | 
The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers on astronomy and physics, operated for NASA by the Smithsonian Astrophysical Observatory. ADS maintains three bibliographic collections containing over 15 million records, including all arXiv e-prints. Abstracts and full-text of major astronomy and physics publications are indexed and searchable through the portal.