Stanford Solar Center. Start with "About the Sun"
Stanford’s Solar and Heliospheric Observatory’s SOHO Explore page
Rutherford Appleton Laboratory’s Solar Eclipse site, with information on the August ’99 eclipse, future eclipses and links.
Star Journey, from National Geographic. View the cosmos with the aid of Hubble Telescope images.
Astronomy Picture of the Day NASA Astronomy Picture of the Day. Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured
Eye on the Universe: The Hubble Space Telescope everything you ever wanted to know about the Hubble.
The Nine Planets: A Multimedia Tour of the Solar System. Don’t miss it.
The Satellite Site, besides learning about satellites, you can construct your own.
NASA’s Space Weather Bureau. Be sure to click on "The NASA Space Weather Tutorial".