+ NASA Homepage + NASA en Español + Marte en Español + Mars Home Time on Mars Rover Status Spirit:  "Catch-22":  Staying Awake vs. Going to Sleep >> Opportunity:  Opportunity Gearing Up for Attempt to Move Robotic Arm >> Wanted: Space-Age Dust Removal  >>   To Follow the Water on Mars, Look for Fins!  >>   Latest Press Images Latest Press Release (April 23, 2008) Latest Audio Press Conference All Press Images All Press Releases All Videos All Raw Images Panorama Images 3-D Images Where are the Rovers now? Shoulder Motor Balks on Opportunity's Robotic Arm A small motor in the robotic arm of NASA's Mars Exploration Rover Opportunity that began stalling occasionally more than two years ago has become more troublesome recently. >> Mars Rovers Sharpen Questions About Livable Conditions Like salt used as a preservative, high concentrations of dissolved minerals in the wet, early-Mars environment known from discoveries by NASA's Opportunity rover may have thwarted any microbes from developing or surviving. >> Astronomers Monitor Asteroid to Pass Near Mars Updated: Jan 9, 2008 As expected, scientists at JPL's Near-Earth Object Office have further refined the trajectory estimate for asteroid 2007 WD5 and ruled out any possibility of a Mars impact on Jan. >> Alignment on December 24, 2007 This is a special day that happens only every 26 months when Earth is exactly between the Sun and Mars. Find out more about opposition and experiment with Mars and Earth in their orbits. >> Software Helps Mars Rovers Find Winter Havens Spirit Gets Help for Finding a Winter Haven New software is helping the rover team find safe places for Spirit to ride out future Martian winters and places for future explorations by both Mars rovers. >> Mars Rover Investigates Signs of Steamy Martian Past Researchers using NASA's twin Mars rovers are sorting out two possible origins for one of Spirit's most important discoveries, while also getting Spirit to a favorable spot for surviving the next Martian winter >> NASA Extends Operations for Its Long-Lived Mars Rovers NASA is extending, for a fifth time, the activities of the Mars Exploration Rovers, Spirit and Opportunity. >> more features >> Flight Director's Update Jan 17: It's the fourth anniversary of the Mars Exploration Rovers. The twin rovers have operated now 16 times longer than the original three-month prime mission and they're still going. Mars Rovers Battle Severe Dust Storm Opportunity Poised to Enter Victoria Crater Photo Poll Winner Spirit's scene of the setting sun Month in Review Slideshow Mars scientist Diana Blaney studies the Red Planet from Hawaii more videos >> + Freedom of Information Act + The President's Management Agenda + FY 2002 Agency Performance and    accountability report + NASA Privacy Statement, Disclaimer, and    Accessiblity Certification Last Updated: + Comments and Questions