digging in a deeper position phoenix ' s robotic arm connected with a deep surfaces that has scientists excited about the prospect of next uncover an icy blanket . " we have dug a trench and uncovered a hard one at the same depth as the snow layer in our other trench , " said potomac university robotic shoulder analyst for phoenix , ray arvidson . the arms tried at least three tries to penetrate the soil , but was unsuccessful . as a result the arm went into a moving fashion , awaiting its initial commands .
A robotic arm has been used for scientific discoveries.