A 360-degree digitally-compressed panorama image of Mars is seen in this composite of 800 images sent from the NASA Opportunity rover on Mars released on July 9, 2012. NASA's long-lived Mars rover ... more 
A 360-degree digitally-compressed panorama image of Mars is seen in this composite of 800 images sent from the NASA Opportunity rover on Mars released on July 9, 2012. NASA's long-lived Mars rover Opportunity has found evidence of ancient life-friendly fresh water, buttressing similar discoveries newcomer rover Curiosity made on the other side of the planet, scientists said on Thursday. REUTERS/NASA/JPL-Caltech/Cornell/Arizona State University/Handout (UNITED STATES - Tags: ENVIRONMENT SCIENCE TECHNOLOGY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS less 
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Reuters | Photo By NASA / REUTERS
Thu, Jan 23, 2014 5:33 PM EST