Mars Pathfinder was launched December 4, 1996, and landed on Mars' Ares Vallis on July 4, 1997. The lander was NASA's first to bring a rover to explore the Red Planet. Together, they surveyed a world that may once have been wet and warm like Earth. Now you, too, can land on Mars and explore on your desktop, smartphone, tablet or 360 virtual reality (VR) viewer. (Note: The nicknames given to the rocks in the scene are unofficial.)

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