NASA astronauts Suni Williams and Butch Wilmore took their first spacewalk together since arriving at the International Space Station last June. They performed maintenance tasks and checked for microbes on the station's exterior.

NASA astronauts Sunita Williams and Butch Wilmore embarked on their first spacewalk after eight months in the International Space Station for maintena

NASA astronauts Sunita Williams and Butch Wilmore, stranded in space for eight months, conducted their first spacewalk.