NASA Rovers Still Exploring Mars After Two Years…

NASA Rovers Still Exploring Mars After Two Years…

LOS ANGELES - The warranty expired long ago on NASA's twin robots motoring around Mars. These two golf cart-sized vehicles were only expected to last three months.

In two years, they have traveled a total of seven miles. Not impressed? Try keeping your car running in a climate where the average temperature is 67 below zero and where dust devils can reach 100 mph.

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