Mars Exploration Rover team members with rover

On March 20, 2004, NASA's Mars Exploration Rover Opportunity used a wheel to dig a trench revealing subsurface material beside the lander hardware that carried the rover to the surface of Mars 55 M...

In the Payload Hazardous Servicing Facility, technicians remove one of the circuit boards on the Mars Exploration Rover 2 (MER-2).

The close camaraderie among scientists and engineers who worked on NASA’s Opportunity rover is evident in this image from Feb. 12, 2019, at NASA’s Jet Propulsion Laboratory in Pasadena, California.

This artist's concept animation depicts key events in NASA's Mars Exploration Rover mission, including launch; cruise; entry, descent & landing; egress; and, surface operations.

This July 7, 2017, scene from the Navcam on NASA's Opportunity Mars rover shows a view from the upper end of "Perseverance Valley" on the inner slope of Endeavour Crater's rim. At left, the valley...

This image shows the rock dubbed "Humphrey" and the circular areas on the rock that were wiped off by the rover.

The rock abrasion tool on NASA's Mars Exploration Rover Spirit ground two holes in a relatively soft rock called "Wooly Patch" near the base of the "Columbia Hills" inside Gusev Crater on Mars.

This view from Opportunity shows the tracks left by a drive executed with more onboard autonomy than has been used on any other drive by a Mars rover.

This 3-D image combines computer-generated models of the Mars Exploration Rover Spirit and its lander with real surface data from the rover's panoramic camera. It shows Spirit's position just after...

This view from the Mars Exploration Rover Opportunity's panoramic camera is a false-color composite rendering of the first seven holes that the rover's rock abrasion tool dug on the inner slope of ...

These two images from 10 days apart show that dust was removed from the panoramic camera's calibration target on NASA's Mars Exploration Rover Spirit.

These views of Mars are just a small sampling from the 124,000 images returned by the Spirit rover. (Audio: music only)

While driving eastward toward the northwestern flank of "McCool Hill," the wheels of NASA's Mars Exploration Rover Spirit churned up the largest amount of bright soil discovered so far in the mission

Suspended by an overhead crane in the Payload Hazardous Servicing Facility, the Mars Exploration Rover (MER) aeroshell is guided by workers as it moves to a rotation stand.

This beautiful scene reveals a tremendous amount of detail in Spirit's surroundings at a place called "Winter Haven," where the rover spent many months parked on a north-facing slope in order to ke...

This stereo view was assembled from images taken by the navigation camera on NASA's Mars Exploration Rover Spirit during the rover's 337th martian day, or sol (Dec. 14, 2004). Spirit's position, ca...

If a human with perfect vision donned a spacesuit and stepped onto the martian surface, the view would be as clear as this sweeping panorama taken by Spirit.

In February 2015, NASA's Mars Exploration Rover Opportunity is approaching a cumulative driving distance on Mars equal to the length of a marathon race. This map shows the rover's position relative...

This vista of the Endeavour Crater rim was acquired by NASA's Mars Exploration Rover Opportunity's panoramic camera on April 18, 2014, from "Murray Ridge" on the western rim of the crater. It is pr...

As Opportunity crept farther into "Endurance Crater," the dune field on the crater floor appears even more dramatic, as seen in this false-color image.

The "keys" to NASA's Mars rovers are in the capable hands of the official rover drivers. Learn how they operate the vehicles from millions of miles away in this 60-second video from NASA's Jet Prop...

From left: Dave Lavery, program executive for Solar System Exploration at NASA Headquarters, Dr. Ed Weiler, associate administrator, Office of Space Science, NASA Headquarters, Pe...

NASA's Mars Exploration Rover Opportunity used its panoramic camera to record this eastward horizon view on the 2,407th Martian day, or sol, of the rover's work on Mars (Oct. 31, 2010).

Engineers for NASA's Mars Exploration Rover Mission are completing assembly and testing for the twin robotic geologists at JPL. This

This image shows segments of the western rim of Mars' Endeavour Crater. NASA's Mars rover Opportunity has explored parts of the rim since 2011. The view covers an area about 9 miles wide. It was ta...