Get the facts on Venus. Resource offers a variety of satellite images and facts about the structure and features of Venus.

Part of the National Air and Space Museum's online exhibition about Exploring Planets, this describes and gives visuals of telescopes, probes and fly-by aircrafts, orbiters, and landers as current methods for earth and airborne...

This is a useful resource for facts and images pertaining to the planet Mercury.

This section of the exhibition gives the history of the discovery and study of space starting with the Greeks and Romans through to the early 1900's.

The plate tectonics and other features of the Earth's lithosphere are explained and illustrated. Has links to definitions of the magnetosphere, atmosphere, and hydrosphere.