NASA Astronauts Are Taking a Spacewalk Today: Watch It Live! Space.comLIVE: Astronauts Replace Station Batteries in Space Walk Space VideosSpacewalk today: Two NASA astronauts venturing outside International Space Station - live updates CBS NewsLive: NASA coverage of the International Space Station US spacewalk Fox NewsWatch astronauts swap out batteries on the outside of the space station during a spacewalk The VergeView full coverage on Google News