NASA - National Aeronautics and Space Administration

S128-E-007693 (3 Sept. 2009) --- NASA astronaut John "Danny" Olivas, STS-128 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 39-minute spacewalk, Olivas and European Space Agency astronaut Christer Fuglesang (out of frame), mission specialist, installed the new Ammonia Tank Assembly on the Port 1 Truss and stowed the empty tank assembly into the Space Shuttle Discovery's cargo bay.

S128-E-007695 (3 Sept. 2009) --- NASA astronaut John "Danny" Olivas, STS-128 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 39-minute spacewalk, Olivas and European Space Agency astronaut Christer Fuglesang (out of frame), mission specialist, installed the new Ammonia Tank Assembly on the Port 1 Truss and stowed the empty tank assembly into the Space Shuttle Discovery's cargo bay.

S128-E-007696 (3 Sept. 2009) --- European Space Agency astronaut Christer Fuglesang, STS-128 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 39-minute spacewalk, Fuglesang and NASA astronaut John "Danny" Olivas (out of frame), mission specialist, installed the new Ammonia Tank Assembly on the Port 1 Truss and stowed the empty tank assembly into the Space Shuttle Discovery's cargo bay.

ISS020-E-038012 (3 Sept. 2009) --- A portion of the International Space Station is featured in this image photographed by a space walking astronaut during the STS-128 mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the station. The blackness of space and the thin line of Earth's atmosphere provide the backdrop for the scene.

ISS020-E-038038 (3 Sept. 2009) --- A portion of the International Space Station is featured in this image photographed by a space walking astronaut during the STS-128 mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the station. The blackness of space and Earth's horizon provide the backdrop for the scene.

ISS020-E-038055 (3 Sept. 2009) --- A portion of the International Space Station is featured in this image photographed by a space walking astronaut during the STS-128 mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the station. The blackness of space and Earth's horizon provide the backdrop for the scene.

ISS020-E-038214 (3 Sept. 2009) --- NASA astronauts Kevin Ford, STS-128 pilot; and Nicole Stott, Expedition 20 flight engineer, work in the Destiny laboratory of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS020-E-038215 (3 Sept. 2009) --- NASA astronauts Kevin Ford, STS-128 pilot; and Nicole Stott, Expedition 20 flight engineer, work in the Destiny laboratory of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS020-E-038217 (3 Sept. 2009) --- NASA astronauts Kevin Ford, STS-128 pilot; and Nicole Stott, Expedition 20 flight engineer, are pictured in the Destiny laboratory of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS020-E-038221 (3 Sept. 2009) --- European Space Agency astronaut Frank De Winne, Expedition 20 flight engineer, is pictured in the Columbus laboratory of the International Space Station while Space Shuttle Discovery (STS-128) remains docked with the station.