Emergency Space Walk

A pair of astronauts will venture outside the International Space Station as early as Tuesday for an emergency space walk to replace a failed computer, one of two that control major U.S. systems aboard the orbiting outpost, NASA said on Sunday.

A pair of astronauts will venture outside the International Space Station as early as Tuesday for an emergency space walk to replace a failed computer, one of two that control major U.S. systems aboard the orbiting outpost, NASA said on Sunday.