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Fri, Oct 26, 2007

Astronauts Add A Little Harmony To The ISS

Work Gets Underway On Construction-Intensive STS-120

NASA reports STS-120 Mission Specialists Scott Parazynski and Doug Wheelock wrapped up the first of five planned spacewalks Friday afternoon. During the six-hour, 14-minute excursion, the STS-120 and Expedition 16 crews successfully installed the Harmony module in a temporary location on the International Space Station, and prepared the P6 truss for its relocation.

The Italian-made Harmony module weights almost 16 tons, and when permanently installed will add over 2,500 cubic feet of habitation space to the ISS. It will also serve as the docking node for Japanese and European laboratories, scheduled for delivery over the next three shuttle missions.

The first spacewalk of STS-120 began at 0602 -- about a half-hour ahead of schedule, reports The Associated Press, all the better to briefly enjoy the view.

"You're not going to believe this," Parazynski told Wheelock as he opened the hatch, as they 122 nautical miles above the Andes and the Amazon rain forest of South America.

Mission Specialist Paolo Nespoli coordinated spacewalk activities. Mission Specialists Stephanie Wilson and Clay Anderson and Expedition 16 Flight Engineer Daniel Tani were at the controls of the station’s Canadian-built robotic arm.

Parazynski and Wheelock removed and stowed the S-band Antenna Structural Assembly which is being returned to Earth on Discovery. Next, they secured a Payload and Data Grapple Fixture onto Harmony that could not be in place during launch, removed contamination covers and disconnected the power cables linking Harmony to Discovery.

When the spacewalkers’ preparations were complete, the station robotic arm operators removed Harmony from the payload bay and moved it to its position on Unity. Meanwhile, the spacewalkers prepared the P6 truss for its relocation.

The two spacewalkers returned to the station at 1216 EDT. Four more spacewalks are scheduled for STS-120.

FMI: www.nasa.gov

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