ASTR 15: Stars and the Milky Way

Digital Library portal for astronomy and physics (contains over 7 million records).

Astrophysics section of arXiv, the premier collection of preprints in physics and related fields - The 1st place many experienced researchers go to keep up-to-date with new research. The service allows authorized users to post papers BEFORE the papers are published through the peer review review process.

Includes: over 5,000 journals in astronomy, physics, and other basic and applied science fields, going back to 1900. Includes "Cited Reference Search" to track research forward.

Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites.