A NASA installation at Pasadena, California, operated by the California Institute of Technology. Established in 1944, it is the command centre for NASA's deep-space probes such as the Voyager, Magellan, Galileo, and Cassini missions, with which it communicates via the deep-space network. It is the leading US centre for robotic exploration of the Solar System, with its spacecraft having visited all the planets. It is currently managing 36 missions, including Aster, Dawn, Mars Exploration Rover, Mars Odyssey, Mars Reconnaissance Orbiter, and the Spitzer Space Telescope.
http://www.jpl.nasa.gov/ Frequently updated site with news and articles on Solar System exploration. Pages describe new technologies and the laboratory's Earth-observation programme; there are activities for younger students, and the acclaimed Solar System Simulator. If you hsve ever wondered how Saturn would look from the vicinity of Titan, or Earth from Pluto, the Solar System Simulator is for you, as you can quickly and easily generate your own views of the Solar System.