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NASA astronauts successfully fix ISS rail vehicle in unscheduled spacewalk
NASA astronauts took an unexpected spacewalk on Monday morning to move a stuck railcar before the arrival of a resupply mission.
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The outing by Scott Kelly and Tim Kopra began at 7:45 am (1245 GMT), the USA space agency said.
The mobile transporter rail auto carries the robotic arm from one location to another on the outside of the orbiting lab.
The Mobile Transporter must be latched securely in place ahead of the planned arrival of Russia’s unmanned Progress 62 cargo ship on Wednesday (Dec. 23), NASA officials have said.
Presently the railcar is around 4 inches (10 centimeters) from its intended latch point and is near the center of the station’s main truss, said NASA experts.
The Progress cargo ship filled with food and supplies launched from Kazakhstan about four hours before the spacewalk began. The spacecraft is expected to dock at 5:31 a.m. E.T. on Wednesday.
NASA astronaut Scott Kelly commanded the spacewalk, his third, and NASA astronaut Tim Kopra joined him outside.
“It’s moving now”, Kelly said while conducting repairs.
For the remainder of the spacewalk, the duo tackled several tasks, including rerouting an Ethernet cable for use in a future Russian science module and putting down cables for future global docking adaptors that will let commercial spacecraft attach to the station. Spacewalks are fantastic to watch, but they’re much riskier for the astronauts, compared to the relative safety of being inside the ISS. Kopra arrived Tuesday, launching from Kazakhstan with Russian and British colleagues.
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Kelly, who is nine months into a one-year mission, will be designated extravehicular activity crew member 1 (EV1) wearing the suit bearing the red stripes, and Kopra will be extravehicular activity crew member 2 (EV2) wearing the plain suit.