Omnidrectional rover robot uses screws to move


Rovers are key to exploring planets that are too far and expensive for manned missions, but they have their limitations. NASA rover “Spirit” scaled a mountain the height of the Statute of Liberty, but couldn’t maneuver its way out of a sand bog. In 2009 Spirit became stuck and in NASA controllers’ attempts to free the rover, the wheels only sank deeper. Lack of sun in the rover’s current location meant Spirit went into low-power hibernation mode, and on May 25 2011 NASA made their last communication with Spirit.

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