NASA spacewalkers install new hand on station's robot arm

Spacewalking astronauts worked at giving the International Space Station's big robot arm a new hand Thursday. Commander Randy Bresnik and Mark Vande Hei tackled the job on the first of three NASA spacewalks planned over the next two weeks. It needs to be replaced before an Orbital ATK supply ship launches in November. Spacewalking astronauts worked at giving the International Space Station's big robot arm a new hand Thursday. The Deep Space Gateway will orbit Earth and the moon and will open up opportunities for future exploration of deep space, as well as a return to the moon and missions to Mars.