Appears several weeks before the printed version. Appears four weeks prior to publication of printed version. The Lausanne Photometric Database Contains data for 75 photometric systems and their references. NASA Astrophysics Data System Abstracts from astronomical articles taken from journals, conference proceedings, reports and theses. Also data catalogues and data archives.
Access is now available to scanned articles from major journals and some books.
Contains data for celestial objects, stars, galaxies and nonstellar objects. WWW Virtual Library and AstroWeb AstroWeb is listing of links to astronomy-related information on the internet.