
One of the astronauts in training for an upcoming shuttle flight can operate a variety of power tools, is more limber than a gymnast, and has just one leg. Robonaut, which NASA hopes to place on a shuttle flight in about 18 months, is one of a series of robots the space agency is developing to assist humans in outer space. Others include Tendril, a robotic cable a centimeter in diameter that can snake into tight spaces and take pictures, and Scout, a four-wheel planetary rover, about the size of a golf cart, that will ferry astronauts around or carry their oxygen and other gear on planetary hikes.