This site from the AIMS Education Foundation provides historical connections in mathematics. The Space Library describes itself as a spyglass on the cosmos. Fire up the Solar System Simulator, which lets you choose your planet or satellite and a place to stand. The home page for the National Aeronautics and Space Administration. The home of NASA's K-12 Internet Initiative.
Files Explains the science behind the news.
Sponsored by the National Science Foundation. The Science Guy's home page. This site requires shockwave, but is worth the visit. The U.S. Dept. of Education sponsors this home page listing many activities relating to science you can do at home or in the community. The home page for TV's Discovery Channel.