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  • 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.

    Huge Dust Devil Northwest of Spirit, Sol 1919

    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).

  • The panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit was taking exposures with different color filters during the 1,919th Martian day.

    Colorful Effect from Sequential Shots of Moving Dust Devils

    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.

    Dust Devil West of Spirit, Sol 1913 (Stereo)

    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).

  • Rover team members prepare an experiment for assessing how a test rover moves when embedded in loose soil and commanded to drive backward with wheels turned.

    Position Markers in Preparation for Test

    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 the Spirit rover.

    After a Crabwalk Test

    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.

  • Engineers check the exact position of a test rover in preparation for the next test of a possible maneuver for Spirit to use on Mars.

    Preparing for Next Test

    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.

  • Rover driver Paolo Bellutta measures how much the rover moved sideways, downslope, during the maneuver.

    Assessing Movement of Test Rover

    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.

  • soft soil exposed when wheels of NASA's Mars Exploration Rover Spirit dug into a patch of ground

    Variations in Soft Soil of 'Troy' (False Color)

    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.

  • Traverse map until Sol 1923 for Mars Rover Spirit

    Spirit's traverse map through Sol 1945

    Where are the rovers now? - Spirit's traverse map through Sol 1945

  • Traverse map until Sol 1923 for Mars Rover Opportunity

    Opportunity's traverse map through Sol 1923

    Where are the rovers now? - Opportunity's traverse map through Sol 1923

  • Spirit's traverse map through Sol 1928

    Spirit's traverse map through Sol 1928

    Where Are The Rovers Now? Spirit's traverse map through Sol 1928. As of Sol 1926, Spirit's total odometry remains at 7,729.93 meters (4.80 miles).

  • Spirit photographs her underbelly

    Spirit Photographs Her Underbelly, Sol 1925

    This panorama of images from the Spirit rover is helping engineers assess the rover's current state and plan her extraction from the soft soil in the region now called "Troy."

  • Opportunity's traverse map through Sol 1898

    Opportunity's traverse map through Sol 1898

    Where are the rovers now? - Opportunity's traverse map through Sol 1898

  • Mars Exploration Rover Opportunity

    Opportunity Photographs Her Underbelly

    Similar to a geologist's hand lens, the microscopic imager on NASA's Mars Exploration rovers is designed to image objects at a close distance (less than a few centimeters) at very high resolution.

  • Spirit's Wheels Digging into Soft Ground

    Spirit's Wheels Digging into Soft Ground, Sol 1899

    Wheel slippage during attempts to extricate NASA's Mars Rover Spirit from a patch of soft ground during the preceding two weeks had partially buried the wheels.

  • Spirit's traverse map through Sol 1893

    Spirit's traverse map through Sol 1893

    As of Sol 1892 (April 29, 2009), Spirit's total odometry is 7,729.73 meters (4.80 miles).

  • NASA's Mars Exploration Rover Spirit

    Spirit Slipping in Soft Ground, Sol 1889

    NASA's Mars Exploration Rover Spirit slipped in soft ground during short backward drives on the 1,886th and 1,889th Martian days, or sols, of the rover's mission on Mars (April 23 and 26, 2009).

  • NASA's Mars Exploration Rover Spirit

    'Von Braun' Mound in Spirit's Drive Direction

    NASA's Mars Exploration Rover Spirit used its navigation camera to capture this view of the terrain toward the southeast from the location Spirit reached on the 1,871st Martian day, or sol, of the rover's mission on Mars (April 8, 2009).

  • Image of NASA's Mars Exploration Rover Spirit

    After a Spirit Drive West of 'Home Plate'

    NASA's Mars Exploration Rover Spirit drove 6.98 meters (22.9 feet) southeastward on the 1,871st Martian day, or sol, of the rover's mission on Mars (April 8, 2009).

  • Image detailing spirit's traverse map until Sol 1871

    Spirit's traverse map through Sol 1871

    Where Are The Rovers Now? - Spirit