Space image: Making the grade
NASA astronauts Steve Bowen and Alvin Drew (partially obscured at center) conducted the STS-133 mission's spacewalk on Monday, Feb. 28.
During the six-hour, 34-minute spacewalk, Bowen and Drew installed the J612 power extension cable, moved a failed ammonia pump module to the External Stowage Platform 2 on the Quest Airlock for return to Earth at a later date, installed a camera wedge on the right hand truss segment, installed extensions to the mobile transporter rail and exposed the Japanese "Message in a Bottle" experiment to space.
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Provided by JPL/NASA