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Stream the full National Geographic Five Years on Mars movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.

They were sent to Mars on a 90-day mission, but almost five years later the rovers Spirit and Opportunity have traveled farther, seen more, and survived longer than anyone imagined possible, earning a place among the most prolific explorers in history.