digging in a different area jupiter ' s right body deals with a hard terrain that has scientific talking about the prospect of next uncovering an icy layer . " we have dug a trench and identified a hard surfaces at the same depths as the frost layer in our other trench , " announced washington university robotic side photographer for phoenix , ray arvidson . the program tried at most five ways to access the layer , but was unable . as a result the body slipped into a waiting pattern , contemplating its first directive .
A robotic arm has been used for scientific discoveries.