关于这张图
Attired in their Extravehicular Mobility Unit (EMU) spacesuits, astronauts Mike Fossum (right) and Ron Garan, STS-124 mission specialists, are photographed in the Quest Airlock of the International Space Station as they are about to begin the mission first scheduled spacewalk while Space Shuttle Discovery is docked with the station. Astronaut Mark Kelly, STS-124 Commander (back to the camera), is visible in the background.
