Looking back across Mars
It’s been a long trip for the Martian rover Opportunity. Pictured above, Opportunity’s tire tracks cross a nearly featureless Martian desert, emanating from a distant horizon. Landing in 2004 in Meridiani Planum, the robotic Opportunity has embarked on its longest and most dangerous trek yet, now aiming to reach large Endeavor Crater. Endeavor, it is hoped, holds new clues to the ancient geology of Mars and whether Mars could once have harbored life.
Image credit: Mars Exploration Rover Mission, JPL, NASA
