The Smithsonian Astophysical Observatory/NASA Astrophysics Data System (ADS) is 20 years old, this spring. It is operated by SAO under a NASA grant. In 1993, the ADS Astract Service launched online with 160K of records for 200 users;  20 years late… more »

The Library has a new one-year license to the  Meteorological & Geoastrophysical Abstracts (MGA).  MGA is produced by the American Meteorological Society and includes citations and abstracts for articles, conference papers, books, and technical… more »

Library website downtime Friday, April 19 The Library website will be unavailable for 1-3 hours starting at 11 p.m. on Friday, April 19 for scheduled maintenance. This will affect the entire library website including subject library pages, course… more »

  more »

    more »