The below list of links compiled by Physics professors provides information about the past and recent advances in the world of Physics. Whether you need resources for a research paper or just like to stay informed, you should check these out:
http://arxiv.org/ - The Archive of physics pre-print papers maintained by Cornell University. This archive contains some of the most recent papers in a variety of areas of Physics (and Math as well as Computing Science). Most papers are submitted here before they go on in many cases to the normal journals.