NASA Mars Mission: No Little Green Men -- Yet
11/30/2012 NASA debunks rumors of new evidence of life on Mars, but its Curiosity rover continues to make many smaller discoveries. Some of NASA's latest images raise interesting questions.
NASA scientists were "surprised" by just how close the similarities are between Mount Sharp, pictured here, and the Grand Canyon. The lower parts of Mount Sharp, which is Curiosity's eventual destination, are composed of rock strata about the same thickness as that of the Grand Canyon. And both have buttes and mesas. Credit: NASA
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