Sojourner Rover

<i>Sojourner Rover</i>

. The tiny rover Sojourner hit the ground with all six wheels running; energized by a solar panel on its top which delivered up to 16 watts of power. The diminutive rover is just over half a meter long, but equipped with three cameras and an instrument that determined the chemical composition of rocks and soil. Sojourner has demonstrated that a small, unmanned rover is an effective vehicle to explore another planet, and that such exploration can be done quickly and relatively cheaply. (Courtesy of NASA and JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University