NASA's Centaur, the half-humanoid, half-vehicle robot pictured in the foreground, is ready for a day's work in the high desert of Arizona. Centaur participated in the NASA's testing of the next generation of space equipment during the Desert RATS field test. Pictured with Centaur is NASA Ames Research Centre's K-10 robot, far left, and Johnson Space Centre's SCOUT rover. (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.