Mars Rover Passes 20-Km. Marker
Making Tracks
NASA's Mars Exploration Rover, named "Opportunity," has passed the 20-km. mark (or 12.43 miles) of total driving since landing on Mars in January 2004. Opportunity has far exceeded its originally-planned mission duration of 90 days, and has returned more than 133,000 images of the Red Planet.
Credit: NASA/JPL-Caltech/Cornell
