NASA Shows Off New Mars Rovers

PASADENA, CA - FEBRUARY 10: The two new Mars exploration rovers rest on stands awaiting final work at NASA Jet Propulsion Laboratory (JPL) February 10, 2003 in Pasadena, California. The identical robotic explorers will trek up to 109 yards each Martian day, far more than the much smaller Mars Pathfinder was able to do in 1997. The rovers will search for evidence of liquid water in two separate areas of the red planet. The rovers stand about five feet tall and weigh in around 400 pounds. The first rover has a launch opportunity May 30, 2003 and the second June 25, 2003. Photo by David McNew/Getty Images