In this April 13, 2005 iimage provided by NASA's Jet Propulsion Laboratory shows a synthetic image of the Spirit Mars Exploration Rover on the flank of "Husband Hill" that was produced using "Virtual Presence in Space" technology. Five years after the NASA rover Spirit landed on Mars, the six-wheel robotic geologist and its twin, Opportunity, are still on the job.
August 10, 2011 11:05:28 AM PDT
LOS ANGELES - August 10, 2011 --
NASA says its surviving Mars rover Opportunity has reached the rim of Endeavour crater after a nearly three-year trek across the surface of the red planet.