Once NASA's Curiosity rover safely touches down inside the Gale crater in August (*crosses fingers*), the real challenge begins. The 907kg, 3m long rover will begin searching for traces of a wet Martian past. But first, researchers at the JPL needed to make sure its sampling arm was up to snuff — here's how they did it. [JPL]
How Curiosity Will Scoop Its Way Around The Red Planet
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