European Space Agency astronaut Christer Fuglesang is visible in the reflection of NASA astronaut Danny Olivas’s helmet visor during this, the STS-128 mission’s third and final spacewalk.
Olivas and Fuglesang deployed the Payload Attachment System, replaced the Rate Gyro Assembly #2, installed two GPS antennae and worked to prepare for the installation of Node 3 next year.
During the STS-131 mission’s first spacewalk, astronauts Rick Mastracchio and Clayton Anderson (out of frame) moved a new 1,700-pound ammonia tank from space shuttle Discovery’s cargo bay to a temporary parking place on the station, retrieved an experiment from the Japanese Kibo Laboratory exposed facility and replaced a Rate Gyro Assembly on one of the truss segments.
Dwarfed by space shuttle Discovery and with Earth’s horizon and the blackness of space providing the backdrop for the scene, NASA astronauts Rick Mastracchio (right) and Clayton Anderson worked in Discovery’s aft payload bay during the mission’s third and final spacewalk. During the six-hour, 24-minute spacewalk, Mastracchio and Anderson hooked up fluid lines of the new 1,700-pound tank, retrieved some micrometeoroid shields from the Quest airlock’s exterior, relocated a portable foot restraint and prepared cables on the Zenith 1 truss for a spare Space to Ground Ku-Band antenna, two chores required before space shuttle Atlantis’ STS-132/ULF-4 mission in May.
Spacewalkers at Work
During the second of three spacewalks STS-131 astronauts Rick Mastracchio (left) and Clayton Anderson continued maintenance activities outside the International Space Station by installing a 1,700-pound ammonia tank on the station’s Starboard 1 truss.
