This is a great resource with beautiful images and reference information about history of human exploration of space, with background on the people, organizations, and inventions that have made such exploration possible. In 2000, the Terra satellite, part of the Earth Observing System, began collecting data on our complex home planet. Nasa scientists are planning "a thorough evaluation of the Earth system’
Developed by the National Academy of Sciences, this site explores the ways basic scientific research has resulted in unexpected and valuable applications. It provides number of articles that trace the origins of important recent technological advances. Each story reveals the crucial role played by basic science, the applications of which could not have been anticipated at the time the original research was conducted.
This site gives you an opportunity to learn about infrared light through fun games, cool movies, images, and more. Classroom activities and a Spanish-language version of the site are also available. You'll need the free Flash plug-in to access the Flash version of the site. HTML version also available.
A self-guided module designed to acquaint individuals with facts about comets. Check out the build your own comet section. Graphically, this is one of the best-looking sites we' ve come across.