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Spirit and Opportunity, the twin Martian rovers

Amanda Doyle    07 June, 2012 12:06

Sen—The Mars Exploration Rovers, Spirit and Opportunity, embarked on a journey to Mars intending to complete a three month primary mission to learn about the history of water on Mars. Over eight years since they landed, and Opportunity is still making tracks across the red planet. Although Spirit succumbed to the harsh Martian environment in 2010 it still far exceeded expectations by driving 12 times further than was originally envisioned.