Cargo Transfers Continue From Leonardo to Station

The crew of space shuttle Discovery awoke Sunday at 9:51 p.m. EDT to "Because We Believe"…

Second STS-131 Spacewalk Complete

STS-131 Mission Specialists Rick Mastracchio and Clay Anderson completed a seven-hour, 26-minute spacewalk at 8:56 a.m.…

Spacewalkers Successfully Engage Troublesome Bolt

Mission Specialists Rick Mastracchio and Clay Anderson removed all four bolts and reseated the Ammonia Tank…

Balky Bolt Slows Spacewalkers

Four hours, 33 minutes into the spacewalk, Rick Mastracchio and Clay Anderson are unable to install…

New Ammonia Tank Assembly Attached to Truss

At 5:04 a.m. EDT, space station robotic arm operators Jim Dutton and Stephanie Wilson attached a…

Spacewalkers Swapping Out Ammonia Tanks

Spacewalkers Rick Mastracchio and Clay Anderson removed electrical connections and bolts that held a spent Ammonia…

Second Spacewalk Starts Early

Spacewalkers Rick Mastracchio and Clay Anderson switched their spacesuits to battery power at 1:30 a.m. EDT,…

Spacewalk Preparations Moving Ahead of Timeline

Preparations for today’s second spacewalk are proceeding briskly. Spacewalkers Rick Mastracchio and Clay Anderson are estimated…

Upgrading the Station

During the STS-131 mission's first spacewalk, which lasted about 6.5 hours, NASA astronaut Rick Mastracchio helped…

STS-131 MCC Status Report #13

Discovery Mission Specialists Rick Mastracchio and Clayton Anderson installed a 1,700-pound ammonia tank on the International…