Exploring Mars by Bulldozer

Tiny robotic bulldozers may soon be on their way to Mars.

space0202mars_A.gif

They'll be too small to clear the way for settlements, but tiny robotic bulldozers may soon be on their way to Mars. Weighing 8 pounds each, the rovers will dig for water or other treasures. Each is equipped with an arm that can scoop Martian soil into an overhead bucket. They're not yet scheduled to fly.