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Mars Rover Opportunity Still Stuck In a Dune
Maddog Batty writes "The mars rover Opportunity, which has been stuck in a sand dune since the end of April, is still going nowhere after wheel spinning attempts were made to free the probe. It did manage to move a very short distance as can be seen in the difference between these two images. Before this attempt the NASA JPL team were playing in their own sandpit trying to replicate the conditions on Mars. (older coverage)"
According to JPL's site the latest move was not an attempt to *free* the rover.
"Opportunity rotated its wheels on sol 463 for the first time since the rover dug itself into a sand dune more than two weeks earlier. The wheels made about two and a half rotations, as commanded, and the results were a good match for what was expected from tests on Earth. In the loose footing, the rover advanced 2.8 centimeters (1.1 inch) forward, 4.8 millimeters (0.19 inch) sideways and 4.6 millimeters (0.18 inch) downward. After further analysis of the results, the rover team will decide whether to repeat the same careful movement again on sol 465."
... and furthermore
The rover managers have successfully tested methods for extracting Opportunity from the sand. Principal investigator Steve Squyres has said all along that it will be a slow process:
http://athena.cornell.edu/news/mubss/