Live Science
Associate Prof. Zachary Cordero speaks with Live Science reporter Larissa G. Capella about why cold welding—a process in which metals fuse together— can easily occur in space and the hazards it can pose. “If there is cold welding, things can become stuck in place,” says Cordero. “If you have a deployable structure and there's cold welding, you might freeze the mechanism, or a door might become locked, or something might become immobilized, which you don't want.”