6th Year Anniversary Graphic

This false-color view from NASA's Mars Exploration Rover Opportunity shows "Lunokhod 2 Crater," which lies south of Solander Point on the west rim of Endeavour Crater.

This close-up image taken by Spirit highlights the nodular nuggets that cover the rock dubbed "Pot of Gold."

NASA's Mars Exploration Rover Opportunity recorded the component images for this self-portrait about three weeks before completing a decade of work on Mars.

This Aug. 15, 2014, scene from the Pancam on NASA's Mars Exploration Rover Opportunity looks back toward part of the west rim of Endeavour Crater that the rover drove along, heading southward, duri...

Eleven years and two months after its landing on Mars, the total driving distance of NASA's Opportunity Mars rover surpassed the length of a marathon race: 26.219 miles (42.195 kilometers). This ma...

This photo shows fifteen of the women engineers and scientists who work on the Mars Exploration Rover. They are standing behind or kneeling beside a precise replica of the rover in the mission cont...

This is a close-up look at a rock grind by made with Spirit 's robotic arm on a rock target dubbed "Mazatzal."

During four months prior to the fourth anniversary of its landing on Mars, Opportunity examined rocks inside an alcove called "Duck Bay" in the western portion of Victoria Crater.

Two spacecraft engineers join a grouping of vehicles providing a comparison of three generations of Mars rovers developed at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The setting is JPL's ...

This infographic highlights NASA’s twin robot geologists, the Mars Exploration Rovers (MER) Spirit and Opportunity.  The rovers landed on the Red Planet in 2004, in search of answers about the hist...

NASA's Mars Exploration Rover Opportunity has extended its robotic arm for studying a light-toned rock target called "Athens" in this March 25, 2015, image from the rover's front hazard avoidance c...

Artist's concept of rover using the rock abrasion tool (RAT) on the robotic arm grinds away the rock's surface, allowing scientific instruments to analyze the rock's interior.

NASA's Mars Exploration Rover Opportunity has been on the western rim of Endeavour Crater in Meridiani Planum for about two years.

Rover 2 equipment deck, with solar arrays partially deployed, in JPL's Spacecraft Assembly Facility's cleanroom.

Dr. Wayne Lee, chief engineer for development of the Mars Exploration Rover's descent and landing systems proudly waves a broom, indicating a clean martian sweep.

More than 1.5 years into their exploration of Mars, both of NASA's Mars Exploration Rovers continue to send a cornucopia of images to Earth.

John Callas, project manager for NASA’s Mars Exploration Rovers mission, makes the call ending the last formal session via NASA’s Deep Space Network (DSN) for the Opportunity rover at Mars on Feb. ...

This full-circle, stereo panorama shows the terrain around the NASA Mars Exploration Rover Opportunity during the 3,105th Martian day, or sol, of the rover's work on Mars (Oct. 18, 2012).

Taken on June 10, 2018 (the 5,111th Martian day, or sol, of the mission) this “noisy,” incomplete image was the last data NASA's Opportunity rover sent back from Perseverance Valley on Mars. 

This stereo view from NASA's Mars Exploration Rover Opportunity shows "Lunokhod 2 Crater," which lies south of "Solander Point" on the west rim of Endeavour Crater. Lunokhod 2 Crater is approximate...

Late-afternoon shadows include one cast by the rover itself in this look toward the floor of Endeavour Crater by NASA's Mars Exploration Rover Opportunity. The rover's Navcam recorded the three com...

The target beneath the tool turret at the end of the rover's robotic arm in this image from NASA's Mars Exploration Rover Opportunity is "Private John Potts." It lies high on the southern side of "...

This scene from NASA's Mars rover Opportunity shows "Wharton Ridge," on the western rim of Endeavour Crater. The ridge's name honors the memory of astrobiologist Robert A. Wharton (1951-2012). The ...

NASA's Mars Exploration Rover Opportunity captured this view after beginning to ascend the northwestern slope of "Solander Point" on the western rim of Endeavour Crater.

With the parachute deployed, three retrorockets fire their engines, suspending the lander 30 - 50 feet above the Martian surface.