Computer Reconstruction of Spirit's Predicament

Computer reconstruction of Spirit's predicament
A screen shot from software used by the Mars Exploration Rover team for assessing movements by Spirit and Opportunity illustrates the degree to which Spirit's wheels have become embedded in soft material at the location called "Troy." The image simulates Spirit's position on May 8, 2009, during the 1,900th Martian day, or sol, of what was originally planned as a 90-sol mission on Mars.