NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
National Oceanic and Atmospheric Administration http://www.noaa.gov/wx.html
Enchanted Learning Zoom Astronomy http://www.enchantedlearning.com/subjects/astronomy/
Astronauts biographies http://www.jsc.nasa.gov/Bios/
History of Astronauts http://history.nasa.gov/nauts.html
Galaxies http://www.seds.org/MESSIER/galaxy.html
Women in Science http://www.astr.ua.edu/4000WS/summary.shtml
16 women of Science http://www.sdsc.edu/ScienceWomen/
National Science Foundation http://www.nsf.gov/index.jsp
Jet Propulsion Lab about Planets http://pds.jpl.nasa.gov/planets/
The Sun and the Planets http://www.nineplanets.org/sol.html
United States Geological Survey http://www.usgs.gov/
Hubble Telescope Views of the Universe http://hubble.nasa.gov/
Size comparison of Planets http://btc.montana.edu/ceres/MESSENGER/Interactives/ANIMATIONS/Planet_Size_Comparison/PlanetSize.html