关于这张图
S135-E-007535 (12 July 2011) --- With his feet secured on a restraint on the space station remote manipulator system’s robotic arm or Canadarm2, NASA astronaut Mike Fossum, is holds the Robotics Refueling Mission payload, which was the focus of one of the primary chores accomplished on a six and a half hour spacewalk on July 12. NASA astronaut Ron Garan, also a station flight engineer, who shared the spacewalk with Fossum, is out of frame. Photo credit: NASA
