Anchored to a Canadarm2 mobile foot restraint, astronaut Heidemarie Stefanyshyn-Piper and astronaut Steve Bowen (out of frame) worked to clean and lubricate part of the station's starboard Solar Alpha Rotary Joints (SARJ) and to remove two of SARJ's 12 trundle bearing assemblies, during the STS-126 mission's first spacewalk.
Anchored to a Canadarm2 mobile foot restraint, astronaut Heidemarie Stefanyshyn-Piper and astronaut Steve Bowen (out of frame) worked to clean and lubricate part of the station’s starboard Solar Alpha Rotary Joints (SARJ) and to remove two of SARJ’s 12 trundle bearing assemblies, during the STS-126 mission’s first spacewalk. The spacewalkers also removed a depleted nitrogen tank from a stowage platform on the outside of the complex and moved it into Endeavour’s cargo bay. They also moved a flex hose rotary coupler from the shuttle to the station stowage platform, as well as removing some insulation blankets from the common berthing mechanism on the Kibo laboratory.Image Credit: NASA