Physics and Astronomy Resources

Yahoo! Physics (http://dir.yahoo.com/Science/Physics/) has sections of links on everything from amusement park ride physics to x-rays and everything in-between.
High School Ace's Science Links (http://highschoolace.com/ace/science.cfm) contains links to general physics sites, special sites, constants and conversions, and more!
The ~~Nine~~ 8 Planets (http://seds.lpl.arizona.edu/nineplanets/nineplanets/) is a multimedia tour of the solar system. Information on all of the planets and their satellites and more!
Constellations and Their Stars (http://www.astro.wisc.edu/~dolan/constellations/) is a site recommended by Mr. Reeve that not only has information on the constellations, but also has a good list of related links at the bottom of the page.
Dome Online Planetarium's Constellation List (http://domeofthesky.com/clicks/constlist.html) lists major constellations by season and area of the world where they're visible. It also has searches in an online dictionary and the Encyclopedia Mythica so you can get definitions and information about the constellations and how they were named.
Peoria Astronomical Society - Learning Resources (http://www.astronomical.org/portal/modules/wfsection/index.php?category=1) Has an alphabetical list of constellations which will give you a star map and brief background on pretty much all of the major (and minor) named constellations.