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PHOTO CAPTION: Russia's Lunokhod 2 lunar electric vehicle is current distance record holder, but will likely be surpassed by NASA's Curiousity rover on Mars.

Learning On Earth From 'Off-World' Electric Vehicles

All three generations of six-wheeled NASA rovers have used electric power systems of various design and complexity to find their way around the Red Planet.

Published: 19-May-2013

Electric cars may still play second fiddle to gas-guzzlers here on Earth, but they've dominated the Martian driving scene for more than a decade.

NASA's tiny Sojourner rover hit the red dirt in 1997, followed by the golf-cart-size twins Spirit and Opportunity in 2004. And last August, the 1-ton Curiosity rover dropped in to determine whether Mars could ever have supported microbial life.

All three generations of six-wheeled NASA rovers have used electric power systems of various design and complexity to find their way around the Red Planet.

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