Alternatively, energy could be transmitted to the lunar and martian surfaces from solar power satellites.

"Not on the martian surface, I wouldn't think."

The serene sunset view, part of their extensive legacy of images from the martian surface, was recorded by the Spirit rover on May 19, 2005.

The individual valleys are typically less than 5 kilometers wide, though they may extend for up to hundreds or even thousands of kilometers across the martian surface.

Large portions of the martian surface are blanketed with bright reddish-ochre dust.

A thin coating of fine bright dust covers most of the martian surface.

The rover is a wheeled vehicle with science instruments for discoveries on the martian surface.

It would even have worked, nearer the martian surface, where water would boil at some reasonable temperature.

Rover: A wheeled vehicle with science instruments for discoveries on the martian surface.

To find out, the rover will carry the biggest, most advanced suite of instruments for scientific studies ever sent to the martian surface.