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CAPE CANAVERAL, Fla. — A pair of astronauts zipped through a spacewalk Monday, helping to install a 1,200-pound oxygen tank at the international space station and accomplishing everything else on their list.
Randolph Bresnik and Dr. Robert Satcher Jr. tackled their biggest spacewalking chore early, removing the tank from a cargo platform and then letting a robot arm take it from there.
