digging in a cold trench eagle ' s robotic hands connected with a flat surface that has scientists excited about the prospect of next uncovered an icy sheet . " we have dug a trench and uncovered a hard structure at the same depth as the ice layer in our other trench , " said washington universidad robotic arm investigator for eva , keith arvidson . the forearm tried at least three tests to escape the slab , but was fails . as a effect the arm went into a running system , awaited its next directive .
A robotic arm has been used for scientific discoveries.