An Artist's concept of possible exploration programs. Two astronauts explore the rugged surface of Phobos. Mars, as it would appear to the human eye from Phobos, looms on the horizon. The mother ship, powered by solar energy, orbits Mars while two crew members inside remotely operate rovers on the Martian surface. Artwork by Pat Rawlings, of SAIC. (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.