The Astrophysics Data System (ADS) is a NASA-funded project whose main resource is an Abstract Service, which includes four sets of abstracts: 1) astronomy and astrophysics 2) instrumentation 3) physics and geophysics 4) Los Alamos preprint server Each dataset can be searched by author, object name (astronomy only), title, or abstract text words. In addition, the abstract service includes links to the full text of articles appearing in most of the major astronomical journals.
