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11/23/09 - Free Spirit: Third Extrication Drive Ends With Wheel Stall
Spirit experienced a wheel stall with the right-rear wheel during the second step of a two-step drive on Sol 2092 (Saturday, Nov. 21).
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11/18/09 - Second Planned Extrication Drive is Straight Ahead Again
Because the first extrication drive for Spirit, on Sol 2088 (Nov. 17), stopped as soon as it began due to an exceeded tilt limit, the plan for an extrication drive on Sol 2090 (Nov. 19) will essentially be a repeat of the first drive plan, but with improved rover attitude knowledge.
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11/17/09 - Tilt Parameters End First Extrication Drive
The preliminary results from the first extrication drive for Spirit on Sol 2088 (Nov. 17, 2009) indicate the rover stopped less than 1 second after it began, sensing more vehicle lateral tilt than permitted.
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11/16/09 - Team Prepares to Uplink Commands to Spirit
Team Prepares to Uplink Commands to Spirit. Today (Monday, Nov. 16), driving commands are being prepared to instruct Spirit to attempt to drive forward.
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11/12/09 - NASA to Begin Attempts to Free Sand-Trapped Mars Rover
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.
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10/30/09 - Amnesia-Like Behavior Returns on Spirit
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.
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10/19/09 - Team Runs Operational Test to Prepare for Extracting Spirit
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.
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9/14/09 - Computer Modeling Supplements Dusty Testing
Tests on Earth simulating Spirit's predicament on Mars have reinforced understanding that getting Spirit to rove again will be very difficult.
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8/25/09 - Dust Storm Passing Over Spirit
The amount of electricity generated by the solar panels on Spirit has been declining for the past several Martian days, or sols, as a regional dust storm moved southward and blocked some of the sunshine at Spirit's location.
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8/21/09 - Second Test Rover Added to Driving Experiments
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.
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