NASA built a 6-foot-tall robot to help astronauts

Space missions can be dangerous for humans. Risks include ship malfunctions and space radiation that can cause cancer. Plus, spending months up in space can be psychologically taxing for astronauts and costly for NASA. In the distant future, NASA may instead send up something like Valkyrie, a 6-foot, 300-pound humanoid that can help astronauts perform tasks that are too dangerous. Designed by engineers at the NASA Johnson Space Center, the robot prototype can walk, climb, balance on one foot, and navigate a room.