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Jack A. Jones and the quarter-size version of his "Tumbleweed Ball."
12.16.2009
Jack A. Jones and the quarter-size version of his "Tumbleweed Ball." Even this 1.5-meter diameter ball easily rolls over rocks and climbs steep hills. The even bigger, 6-meter diameter prototype is unimpeded by large boulders and is being studied as a possible planetary rover.

Image Credit: NASA/JPL-Caltech

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