Robots and Rovers and Mars Revisited
...But they found no signs of life - just lifeless dirt.
"They were going for too much too soon," Steve Squyres told Miles O'Brien.
NASA's Viking 1 Orbiter photographed this region in the northern latitudes of Mars on July 25, 1976, while searching for a landing site for the Viking 2 Lander. The image's speckled appearance is due to missing data, called bit errors, caused by problems in data transmission from Mars to Earth.