NASA's Mars Exploration Rover Opportunity used its navigation camera to take the images combined into this 360-degree view of the rover's surroundings on the 1,850th Martian day, or sol, of its surface mission (April 7, 2009).
NASA's Mars Exploration Rover Opportunity used its navigation camera to take the images combined into this stereo, 360-degree view of the rover's surroundings on the 1,850th Martian day, or sol, of its surface mission (April 7, 2009).
Researchers used the navigation camera on NASA's Mars Exploration Rover Spirit to look for dust devils near the rover during the mission's 1,919th Martian day, or sol (May 27, 2009).
While the panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit was taking exposures with different color filters during the 1,919th Martian day of the rover's mission (May 27, 2009), dust devils moved across the field of view.
The navigation camera on NASA's Mars Exploration Rover Spirit caught this stereo view of a dust devil during the 1,913th Martian day, or sol, of the rover's mission on Mars (May 21, 2009).
Mars Exploration Rover team members at NASA's Jet Propulsion Laboratory, Pasadena, Calif., prepare an experiment on July 13, 2009, for assessing how a test rover moves when embedded in loose soil and commanded to drive backward with wheels turned.
Mars Exploration Rover team members prepare a testing setup for a subsequent experiment after an experiment driving the rover in a crablike motion, with all four corner wheels angled to the right.
The finished heat shield for NASA's Mars Science Laboratory is the largest ever built for descending through the atmosphere of any planet.
Mike Seibert and Sharon Laubach, engineers on the Mars Exploration Rover team at NASA's Jet Propulsion Laboratory, Pasadena, check the exact position of a test rover in preparation for the next test of a possible maneuver for Spirit to use on Mars.
After commanding five of a test rover's six wheels to drive forward, rover driver Paolo Bellutta measures how much the rover moved sideways, downslope, during the maneuver.
Sandbox setup at NASA's Jet Propulsion Laboratory, Pasadena, Calif., is ready for engineers to use the test rover to assess possible moves for getting Mars rover Spirit out of a patch of loose Martian soil.
While a test rover rolls off a plywood surface into a prepared bed of soft soil, rover team members Colette Lohr (left) and Kim Lichtenberg (center) eye the wheels digging into the soil and Paolo Bellutta enters the next driving command.
Rover team members Mike Seibert (left) and Paolo Bellutta add a barrowful of soil mixture to the sloped box where a test rover will be used for assessing possible manuevers for NASA's Mars Exploration Rover Spirit to use in escaping from a sandtrap on Mars.
Rover team members Kim Lichtenberg (left) and Mike Seibert fill a mixer with powdered clay and diatomaceous earth.
The soft soil exposed when wheels of NASA's Mars Exploration Rover Spirit dug into a patch of ground dubbed "Troy" exhibit variations in hue visible in this image, in which the colors have been stretched to emphasize the differences.
Where are the rovers now? - Opportunity's traverse map through Sol 1923
Where are the rovers now? - Spirit's traverse map through Sol 1945
Pastel colors swirl across Mars, revealing differences in the composition and nature of the surface in this false-color infrared image taken on May 22, 2009,by the Thermal Emission Imaging System (THEMIS) camera on NASA's Mars Odyssey orbiter.
Pictured here is Clara Ma (in front row on the right) and her sister Remmy Ma with engineers Suparna Mukherjee, Jaime Waydo and then Julie Townsend (back row).
Clara Ma (in front) with Suparna Mukherjee, Julie Townsend, Jaime Waydo (in back row) are featured here in the laboratory where an engineering model of the next Mars rover, Curiosity, is being tested.