provides an educational tour of the Sun and nine planets. It includes information on the Sun, planets, satellites, and the spacecraft that have visited them. The tour uses hypertext to let you click on a desired planet to display information and images about that planet. It includes information about the planet's moons, atmosphere, structure, rings, mythology, missions, statistics and more.
Unusual terms are clearly defined with direct links to over 100 terms taken from the Windows Dictionary of Astronomy. It contains over 150 of the best images from NASA's planetary exploration program.