NASA engineers trying to work the Spirit rover out of the Martian sand trap it got stuck in last April have finally found some success. Spirit moved. Not much-- less than an inch in three-dimensional space-- but it did move. It got off the dime. Further, this attempt was limited, a test to see what might happen.
NASA is analyzing exactly what did happen before deciding what to do next. Now, though, at least there is hope that at some point Spirit will be able to resume its explorations.