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Dr. Carl Sagan poses with a model of the Viking lander. The Viking 1 lander was the first spacecraft to touch down safely on Mars.
Image Credit: NASA/JPL
Medium resolution version of this image p>
NASA Spacecraft Sees Ice on Mars Exposed by Meteor Impacts (9/24/09) JPL Engineer Narrates 'Are We Alone?' (7/14/09) Students Zoom Aerial Cars in Engineering Contest (12/16/08) NASA Spacecraft Detects Buried Glaciers on Mars (11/20/08) Site List Narrows For NASA's Next Mars Landing (11/19/08) NASA's Phoenix Mars Lander Inspects Delivered Soil Samples (6/13/08)