Mars rovers find new evidence of 'habitable niche'

Victoria Crater, about 800 meters (one-half mile) in diameter, has been home ground for NASA's Mars Exploration Rover Opportunity for more than 14 of the rover's first 46 months on Mars. This view shows the rover's path overlaid on an image of the crater taken by the High Resolution Imaging Science Experiment on NASA's Mars Reconnaissance Orbiter. Credit: NASA/JPL-Caltech/University of Arizona/Cornell/Ohio State University