Two NASA robots and two geologists are now simulating an expedition to another planet during a field test expected to continue until April 15 in Utah’s Southeast Desert, near Hanksville. During the ongoing ‘Mobile Agents Project,’ NASA engineers are working to improve human-robot interactions to help NASA accomplish its Vision for Space Exploration to return to the moon and venture to Mars. The wheeled robots are attempting to help the astronaut team to maintain connection with a wireless computer network. Scientists and engineers from NASA Ames and NASA Johnson Space Center, Houston, are taking part in the test. Prototype ‘Extravehicular Activity (EVA) Robotic Assistants,’ developed at NASA Johnson, will follow geologists and respond to voice commands at the Mars Society’s Mars Desert Research Station.