Description
This image is a screenshot from a computer-generated animation showing the Mars Exploration Rover Opportunity's arm exploring the trench dug by one of its wheels. The rover's arm, or instrument deployment device, holds a suite of scientific instruments designed to examine rocks and soil for signs of past water on Mars. One of these instruments, the alpha particle X-ray spectrometer, is shown here investigating the trench. The movie was generated from data taken by the rover's onboard sensors.
