Wednesday, November 21, 2007

Space Station Astronauts Take Spacewalk

CAPE CANAVERAL, Fla. (AP) — Two spacewalking astronauts wired up the international space station's newest room Tuesday and, to NASA's delight, kept the next shuttle visit on track for early December.
Commander Peggy Whitson and Daniel Tani spent hours hooking up power and heater cables and fluid lines between the space station and the Harmony compartment that was delivered by the shuttle last month. It was tedious, hand-intensive work.
"Yay! Got it," Whitson exclaimed after making a particularly difficult connection. "Those were hard."
Not long afterward, Tani commented on how strong Whitson looked.
"She's the king of the world," Tani shouted. "Queen," replied the space station's first female skipper, sparking laughter between the two.
The fluid lines — for carrying ammonia, a coolant — were in an 18 1/2-foot, 300-pound tray. The spacewalkers removed the tray from its storage location on the space station, then lugged it over to Harmony and bolted it down on the adjacent lab module. It was awkward to carry, and the spacewalkers took turns, careful not to bang anything.
While venting some of the hookups, frozen ammonia crystals floated out and bounced off Whitson. She checked her suit with a contamination detector to make sure none of the toxic substance got inside.
Later, harmless nitrogen gas vented out of a valve. "Oooooh," Whitson said, laughing. "Something coming out of my hand."
NASA cannot launch another space shuttle until the school bus-size Harmony is all hooked up, inside and out. Atlantis is supposed to blast off Dec. 6 with a European laboratory that will dock to Harmony. One of Harmony's other parking spaces is reserved for a Japanese lab.
As the spacewalkers struggled with stiff connectors more than 200 miles up, Atlantis' seven astronauts climbed aboard their ship for a practice launch countdown.
The space station's three residents have been working almost nonstop since Discovery's departure on Nov. 5, and just last week moved Harmony to its permanent location. This was their second spacewalk; a third and final outing is set for Saturday to hook up another fluid tray for Harmony.
They've already volunteered to work on Thanksgiving.

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