NASA’s ‘Iron Man’ Exoskeleton Helps Astronauts, Paraplegics [VIDEO]

Watch out, Iron Man. While it may not have the superpowers of Tony Stark's armor, NASA has built a robot exoskeleton called “X1″ that helps astronauts exercise in space, and paraplegics walk on earth, according to the space agency. Humans wear the 57-pound device over their body to "assist or inhibit movement in leg joints," NASA said in a release. In the inhibit mode, X1 would be used as an exercise machine to provide resistance against leg movement in space's zero-gravity environme...