Mars Exploration Rover team members with rover

This image is a cropped version of the last 360-degree panorama taken by the Opportunity rover's Pancam from May 13 through June 10, 2018. The panorama appears in 3D when seen through blue-red glas...

This stereo vista from NASA's Mars Exploration Rover Opportunity shows "Wdowiak Ridge," from left foreground to center, as part of a northward look with the rover's tracks visible at right. The ima...

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 ...

This blink comparison aids evaluation of a drive by NASA's Mars Exploration Rover Spirit during the rover's 2,099th Martian day, or sol (Nov. 28, 2009).

This artist's rendering depicts NASA's Mars Exploration Rovers, Spirit and Opportunity. The twin rovers were launched in 2003 and arrived on Mars in January 2004.

This view of a 90-foot-wide, relatively fresh crater on Mars, "Orion Crater," combines images from the left eye and right eye of the Panoramic Camera (Pancam) on NASA's Mars Exploration Rover Oppor...

John Callas has been a leader of NASA's Mars Exploration Rover Project since the project's inception in 2000, and has been the project manager since 2006.

The deck of NASA's Mars Exploration Rover Spirit is so dusty that the rover almost blends into the dusty background in this image assembled from frames taken by the panoramic camera (Pancam) during...

The flat-faced rock near the center of this image is a target for contact investigation by NASA's Mars Exploration Rover Opportunity in early March 2015.

This synthetic image recreates what Opportunity might look like in Endurance Crater. Produced using "Virtual Presence in Space" technology at NASA's Jet Propulsion Laboratory, it combines visualiza...

Results from Opportunity and Curiosity show Mars could have supported life.

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.

NASA's Mars Exploration Rover Spirit has been making tracks on Mars for seven months now, well beyond its original 90-day mission. The rover traveled more than 3 kilometers (2 miles) to reach the "...

This image from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity shows where a rock called "Pinnacle Island" had been before it appeared in front of the rover in early Jan...

This collage shows the variety of soils found at landing sites on Mars.

The Mars Exploration Rover-2 is moved to a workstand in the Payload Hazardous Servicing Facility.

Steve Squyres, principal investigator for NASA’s Mars Exploration Rover mission, and Matt Golombek, the mission’s project scientist, discussed the ground-breaking science returned by the mission’s ...

NASA's Mars Exploration Rover Opportunity used its panoramic camera (Pancam) to capture this false-color panorama of the "Matijevic Hill" area on the "Cape York" segment of the western rim of Endea...

During a team meeting for NASA’s Opportunity rover, Ben Cark of the Space Science Institute talks about his experiences working on NASA’s longest-lived Mars surface explorer. 

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...

Two generations of Rovers.

On May 19th, 2005, NASA's Mars Exploration Rover Spirit captured this stunning view as the Sun sank below the rim of Gusev crater on Mars.

One of two Mars Exploration Rovers sits inside its cruise stage waitingto undergo environmental testing at NASA's Jet PropulsionLaboratory.

Opportunity captured this vista of "Victoria Crater" from the viewpoint of "Cape Verde," one of the promontories that are part of the scalloped rim of the crater.

A forward-looking view of a portion of the "Columbia Hills" captured by Spirit shows the expansive hills ahead. It features "Husband Hill" to the left, "West Spur" in the center, and a talus (rock...