NASA Technicians do final checks on NASA's Spirit rover in this image from March 28, 2003. The rover - and its twin, ...

The launch in late 1996 of the Mars Pathfinder mission with its Sojourner rover then was exciting news indeed. Before Spirit, the exceptionally long-lived Opportunity, and the relatively huge ...

demonstrating a new and effective method for landing on Mars. The Pathfinder mission, consisting of a lander and the small ...

For the fourth year in a row, NASA's Curiosity rover has photographed ... Twilight clouds on Mars were first observed during NASA's Pathfinder mission in 1997. Curiosity's recent observations ...