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(PhysOrg.com) -- NASA will begin transmitting commands to its Mars exploration rover Spirit on Monday as part of an escape plan to free the venerable robot from its Martian sand trap. http://www.physorg.com/news177260630.html Space & Earth Thu, 12 Nov 2009 15:40:03 EST news177260630 (PhysOrg.com) -- Until Oct. 24, NASA's Mars Exploration Rover had gone more than six months without an episode of amnesia-like symptoms like those that appeared on four occasions earlier this year. http://www.physorg.com/news176195599.html Space & Earth Sat, 31 Oct 2009 08:14:12 EST news176195599 (PhysOrg.com) -- Engineers using test rovers on Earth to prepare for extracting the sand-trapped Spirit rover on Mars have added a new challenge to their preparations. http://www.physorg.com/news175200306.html Space & Earth Mon, 19 Oct 2009 20:50:01 EST news175200306 (PhysOrg.com) -- In the past several weeks, scientists at NASA's Jet Propulsion Laboratory finished experimentation on methods to get the rover Spirit unstuck from its location near a plateau called Home Plate. http://www.physorg.com/news174650773.html Space & Earth Tue, 13 Oct 2009 11:40:06 EST news174650773 A second, lighter-weight test rover has entered the testing setup at JPL where rover team members are assessing strategy for getting Spirit out of soft soil where it is embedded on Mars. http://www.physorg.com/news170357223.html Space & Earth Mon, 24 Aug 2009 18:40:01 EST news170357223 Today, Aug. 18, 2009, marks the Mars Exploration Rover Spirit's 2,000th sol, or Martian day, on the Red Planet. http://www.physorg.com/news169832999.html Space & Earth Tue, 18 Aug 2009 17:00:01 EST news169832999 (PhysOrg.com) -- Composition measurements by NASA's Mars Exploration Rover Opportunity confirm that this rock on the Martian surface is an iron-nickel meteorite. http://www.physorg.com/news168801850.html Space & Earth Thu, 06 Aug 2009 18:24:44 EST news168801850 (PhysOrg.com) -- Scientists have combined a trio of shots taken seconds apart through different colored filters to create a special-effects portrait of a moving dust devil on Mars. http://www.physorg.com/news166807575.html Space & Earth Tue, 14 Jul 2009 17:00:03 EST news166807575 On firm ground, NASA's Mars Exploration Rovers can make crablike moves by turning all four steerable wheels to the same side angle, then rotating the wheels either forward or backward. http://www.physorg.com/news166727314.html Space & Earth Mon, 13 Jul 2009 18:20:02 EST news166727314 (PhysOrg.com) -- NASA's Mars Exploration Rover Spirit drove on Thursday for the first time since April 8, acting on commands from engineers who are still investigating bouts of amnesia and other unusual behavior exhibited by Spirit in the past two weeks. http://www.physorg.com/news159802967.html Space & Earth Fri, 24 Apr 2009 14:44:13 EST news159802967 (PhysOrg.com) -- After three days of completing Earth-commanded activities without incident last week, NASA's Mars Exploration Rover Spirit had a bout of temporary amnesia Friday, April 17, and rebooted its computer Saturday, April 18, behavior similar to events about a week earlier. http://www.physorg.com/news159554640.html Space & Earth Tue, 21 Apr 2009 17:44:38 EST news159554640 (PhysOrg.com) -- The team operating NASA's Mars Exploration Rover Spirit is examining data received from Spirit in recent days to diagnose why the rover apparently rebooted its computer at least twice over the April 11-12 weekend. http://www.physorg.com/news158948038.html Space & Earth Tue, 14 Apr 2009 17:14:44 EST news158948038 In January 2004, NASA landed two identical robotic rovers named Spirit and Opportunity on the surface of Mars. The twins were primed for a brief 3-month mission to tell us a story of water and possibly life itself in the planet's past. More than five years later, the dynamic duo are still roving the Red Planet, engaged in a saga of overachievement that has transformed Mars exploration. http://www.physorg.com/news157305969.html Space & Earth Thu, 26 Mar 2009 17:06:52 EST news157305969 (PhysOrg.com) -- Loose soil piled against the northern edge of a low plateau called "Home Plate" has blocked NASA's Mars Exploration Rover Spirit from taking the shortest route toward its southward destinations for the upcoming Martian summer and following winter. http://www.physorg.com/news155493768.html Space & Earth Thu, 05 Mar 2009 16:43:33 EST news155493768 (PhysOrg.com) -- A small but important uptick in electrical output from the solar panels on NASA's Mars Exploration Rover Spirit this month indicates a beneficial Martian wind has blown away some of the dust that has accumulated on the panels. http://www.physorg.com/news153682553.html Space & Earth Thu, 12 Feb 2009 17:39:08 EST news153682553 (PhysOrg.com) -- The team operating NASA's Mars Exploration Rover Spirit plans diagnostic tests this week after Spirit did not report some of its weekend activities, including a request to determine its orientation after an incomplete drive. http://www.physorg.com/news152385350.html Space & Earth Wed, 28 Jan 2009 17:16:33 EST news152385350 Rocks on Mars are on the move, rolling into the wind and forming organized patterns, according to new research. http://www.physorg.com/news150644809.html Space & Earth Thu, 08 Jan 2009 13:46:49 EST news150644809