Discovery astronauts’ complete final spacewalk

WASHINGTON: Discovery astronauts ended their third and final spacewalk on Monday on a slight down note, unable to fix a jammed cargo carrier system, NASA said. Richard Arnold and Joseph Acaba, two former science teachers turned astronauts, carried out a six-and-a-half hour walk in space, which included attempts to unblock the external cargo carrier. The carrier became stuck after Acaba and another astronaut inadvertently inserted a restraining .... Full Story