Links:
[1] http://www.billnye.com/
[2] http://www.chem4kids.com/
[3] http://www.fourmilab.ch/earthview/vplanet.html
[4] http://www.factmonster.com/
[5] http://hubblesite.org/
[6] http://www.mathcats.com/
[7] http://www.nasa.gov/audience/forkids/home/index.html
[8] http://www.nasm.si.edu/
[9] http://www.nationalgeographic.com/kids/
[10] http://www.ipl.org/div/projectguide/
[11] http://www.strangematterexhibit.com/