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NASA's Phoenix Mars Lander's Surface Stereo Imager shows two trenches dug by Phoenix's Robotic Arm in this image taken June 8, 2008, the 14th Martian day after landing. Soil from the right trench, informally called "Baby Bear," was delivered to Phoenix's Thermal and Evolved-Gas Analyzer, or TEGA, on June 6, 2008. Picture taken June 8, 2008. REUTERS/NASA/JPL-Caltech/University of Arizona/Texas A&M University/Handout (UNITED STATES). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.

The surface of Mars

Close-up views of our neighboring planet.