What if you saw your shadow on Mars and it wasn't human? Then you might be the Mars Exploration Rover Opportunity currently roaming the red planet. Opportunity and sister robot Spirit have been probing Mars since early 2004, finding evidence of ancient water, and sending breathtaking images across the inner solar system.
What if you saw your shadow on Mars and it wasn’t human? Then you might be the Mars Exploration Rover Opportunity currently roaming the red planet. Opportunity and sister robot Spirit have been probing Mars since early 2004, finding evidence of ancient water, and sending breathtaking images across the inner solar system. Pictured above, Opportunity looks opposite the sun into Endurance Crater and sees its own shadow. Two of its wheels are visible, while the floor and walls of the unusual crater are visible in the background. Opportunity and Spirit have now spent over three years exploring the red planet, finding new clues into the wet ancient past of our solar system’s second most habitable planet.Image credit: NASA/JPL