Our Star, The Sun - A short tutorial (in English and Spanish) about the Sun and solar effects on Earth prepared at the Space Environment Laboratory of the National Oceanic and Atmospheric Administration.
Space Wander - Fly through the Universe. Explore space plasma and deep-space mysteries. Real space pictures from NASA. In English, French, Italian, Spanish and Russian.
The Sun - A multimedia tour of the Sun and the solar system prepared by the Lunar and Planetary Laboratory at the University of Arizona.
U. Iowa Space Plasma Wave Research - Site of the University of Iowa research group describes various undertaken space plasma wave projects including those involving Earth-orbiting and planetary spacecraft.