ADS: Astrophysics Data System
"The SAO/NASA Astrophysics Data System (ADS) is a Digital Library portal for researchers in Astronomy and Physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic databases containing more than 9.1 million records: Astronomy and Astrophysics, Physics, and arXiv e-prints."
APOD: Astronomy Picture of the Day
"Contains the largest collection of annotated astronomical images on the internet". Co-created by a university professor and a NASA scientist.
ArXiv.org E-Print Archive
ArXiv (pronounced "archive.org") is a repository for research papers in physics, computer science, mathematics and neuroscience. While many of the papers on the server are high quality, be warned that they are not peer-reviewed. ArXiv does moderate the submissions for relevance and appropriateness, and has recently implemented and endorsement system for some submissions. However, this is not the same as peer-review.
NIST Physical Reference Data
The National Institute of Standards and Technology maintains this website, and it is very current. You can find numerical data, reference information and information on papers that have been published relating to the data. Be aware that many of the pages should be printed in landscape mode.
This site is brought to you by the Institute of Physics. The site includes news, resources, company information and job listings. Check the "Latest News" section to see short articles on recently published articles.
A science search engine created by Elsevier, a major science publisher. Searches many science databases and websites and Elsevier science journals. Note that the journal articles are not available free of charge through Scirus; perform a Bridge title search for the journal title to find out if the articles are available at Gould Library. Many of the articles returned are from Elsevier journals.
Science news related to biotechnology, careers, Earth & environment, medical research, more.
Science Magazine: News
Daily science news.