Spacewalkers Danny Olivas and Nicole Stott wrap up the first STS-128 spacewalk and enter the U.S. Quest airlock.
Shuttle and crew begin the STS-128 mission to the International Space Station.
JPL engineers are using a second, lighter rover to test maneuvers to free Spirit.
Comedian Stephen Colbert offers an inspirational message for the astronauts carrying his namesake treadmill into space.
The STS-128 astronauts rehearse in Florida for liftoff.
Space shuttle Discovery rolls to Launch Pad 39A in preparation for its STS-128 mission.
After 16 days in space and a challenging mission behind them the STS-127 crew land safely in Florida.
Cameras aboard the International Space Station and space shuttle Endeavour capture spectacular views as the STS-127 crew performs a fly-around of the station.