CD-Rom with 600 MB of images and movies about the solar system, and the galaxy. "Space Weather" modules brings you today's images of the Sun in many wavelengths and the aurora from space. "Sky Tonight" sections gives today's star view. Funded by NASA. [Commercial - Mac/Win]

Interactive Java applets display the position, daily and annual path of the sun and the moon, for any time and location. [online - not available for any PC platforms]

The complete guide to robotic and human exploration of the red planet. Downloadable excerpts, unique website hotlist of over 200 sites. [commercial]

Astronomical simulation package for the amateur or professional observer. [commercial - Mac]

Application to visualize the orbit and synthetic light curve of binary star systems. Includes information about this phenomenon, screenshots of the program, list of features and free download.

Eight interactive levels covering various aspects of the universe. [commercial - Windows]

A CD-ROM course that provides a guide and tutorial about the Night Sky. Includes 18 mini-chapters on the constellations, Messier objects, planetary orbits and stellar evolution, along with a Y2K screen saver. [commercial, demo available -- Windows]

A colorful multimedia atlas of the solar system. You can learn about each planet's motions, atmospheres, geology, and internal structure. Colorful photographs, animated maps, and data from Voyager, Galileo, and other space probes are combined in an informative and entertaining program. [commercial, demo available - DOS, Win3.1/95/NT]

Classic hypertext astronomical reference source with over 2000 definitions and links to special articles and further reading. [Shareware - Win3.x/95/NT/2000]