Mars "The Red Planet"
Image to right: Little Sojourner was the first robotic
rover to explore the surface of Mars. Credit: NASA
Image to left: The Pathfinder lander is visible from Sojourner's rear camera.
Pathfinder's deflated airbags surround the craft. Credit: NASA
Image to left: Mars Global Surveyor spotted this ancient river delta flowing
through a giant crater. Credit: NASA