... Credit Copyright: Mars Exploration Rover Mission , JPL , NASA Explanation: Rocks are strewn across the broad, flat Gusev crater floor in this sharp color picture from NASA's Spirit rover . Recorded by the rover's panoramic camera , the picture is part of Spirit's first color image of Mars - the highest resolution picture yet taken on the surface of another planet. ... Publications with keywords: Mars - Spirit rover - Gusev crater . Publications with words: Mars - Spirit rover - Gusev crater . ...