Artist's rendering of Mars rover. Image Credit: NASA/JPL-Caltech.

Starting today, NASA will try to free Spirit, the Mars rover which has been stuck for months on a sandpit on Mars.  NASA’s Jet Propulsion Laboratory tested a variety of methods for freeing Spirit, but the JPL is not optimistic that they will be able to free the rover.  Constrained by the geographic of its location, NASA has decided that they have learned all they can from tests and it is time to see if Spirit can be freed.  For more information, see CNET News.