Abstract

Mars Pathfinder successfully landed on the surface of Mars on July 4, 1997, ushering in a renewed phase of exploration of our neighboring world after a hiatus of over 20 years. In addition to successfully capturing the imagination of the public by landing a robust, low‐cost spacecraft and rover on the Red Planet, Pathfinder returned a significant volume of scientific data. Pathfinder was the first Mars mission to use a rover, which carried a chemical analysis instrument that characterized the rocks and soils in a landing area occupying hundreds of square meters. In 3 months of surface operations at Ares Vallis, Pathfinder's three science instruments, 10 technology experiments, and engineering subsystems aboard the rover and lander, addressed seven general areas of scientific investigations.

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