September 5, 2009
Astronauts complete 3rd and last spacewalk
Astronauts Danny Olivas and Christer Fuglesang completed their third and final spacewalk on this shuttle mission ahead of schedule Saturday, NASA said.
The spacewalk of the STS-128 mission lasted 7 hours and 1 minute and concluded at 11:40 p.m. EDT.
Tranquility-- a supply ship for the space station that arrives next year.
On the spacewalk, which started at 4:39 p.m. EDT, the two also astronauts installed a system for hanging spare parts on the truss of the space station.
They removed a failed gyro assembly, which measures rates of the station's changes in altitude.
And they installed two antennas for the station's global-positioning system.