(Summary adapted from ADS homepage)
The Astrophysics Data System (ADS) is a NASA-funded project which maintains
four bibliographic databases containing more than 2.6 million records:
Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and
preprints in Astronomy. The main body of data in the ADS consists of
bibliographic records, which are ... searchable through our Abstract Service query
forms, and full-text scans of much of the astronomical literature which can be
browsed though our Browse interface.
Please note that all abstracts and articles in the ADS are copyrighted by the
publisher, and their use is free for personal use only. For more information,
please read our page detailing the Terms and Conditions regulating the use of
In addition to its databases, the ADS provides access and pointers to a wealth
of external resources, including electronic articles, data catalogs and
If you wish to acknowledge us in a publication, kindly use a phrase such as the
following: "This research has made use of NASA's Astrophysics Data System."