 About the size of a Volkswagen bug with extremely long antennas, this robotic outer space explorer called Voyager has dazzled scientists and laymen with photographs of planets in our solar system. First traveling to Jupiter, then to Saturn, and now to Uranus. Voyager has traveled a distance of 2 billion miles from Earth. Recently we have seen photographs from the little-known world of Uranus. Appearing like a fuzzy blue-green tennis ball tipped on its side, Uranus conceals its secrets under an atmosphere of hydrogen and helium. Its southern polar region sits under a thin layer of haze produced by the action of sunlight much as smog is produced in our major cities. Scientists feel that Uranus has a very deep ocean of electrically conductive water that forms the planet's magnetic field and hosts a rocky inner core about the size of Earth. It has been recently found that the magnetic field is largely offset from the planet's center. Besides pointing its scientific sensors and TV cameras at Uranus and its charcoal black rings, Voyager discovered 10 new moons, making a total of 15 known to circle the planet. The close flyby of the Moon Miranda proved to be one of the most exciting highlights of the encounter, according to Voyager project manager Dick Laser. We had worked so hard to make sure that those frames, those pictures, would be exactly where we wanted them. When the first of the series of eight Miranda images came in, and it clipped the corner of the satellite just where it was supposed to, it was that sense of, oh my God, we did it. I started looking at the substance of the pictures that varied topography and really wild stuff. Miranda is a blend of all the exotic surface topographies found in our solar system wrapped into one, according to Voyager project scientist Dr. Edward Stone. What was surprising was the extent and the diversity of the geologic processes which were evident on the surface, where it's much too cold to melt anything, yet somehow that surface has moved. It has been reshaped by an internal heat source of unknown magnitude. In the image processing lab at NASA's Jet Propulsion Laboratory in Pasadena, California, Voyager imaging scientist Dr. Torrance Johnson reviews Miranda's most dramatic feature, an icy rift valley with sheer cliffs over 10 miles high. Looking across here, you're looking across something that's in order of 10 times deeper than the Grand Canyon. Now in deep space, Voyager is on a three-year journey to Neptune, as it continues to show us images of worlds we have never seen before.