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Spacewalkers finish up wiring job in orbit

8 Apr 2019, 21:33 UTC
Spacewalkers finish up wiring job in orbit
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Canadian astronaut David Saint-Jacques works on the International Space Station’s exterior, while NASA’s Anne McClain works in the background at lower right. (NASA TV via YouTube)
A U.S.-Canadian spacewalking duo wrapped up a series of three outings over the span of three and a half weeks, aimed at upgrading the International Space Station’s power and communication systems.
During the 6.5-hour operation, NASA astronaut Anne McClain and her Canadian crewmate, David Saint-Jacques, established a redundant path for power lines to the station’s Canadian-built robotic arm. They installed cables to provide for wider wireless communication coverage outside the station and improved hard-wired networking.
The spacewalkers also did prep work for a maintenance job that will be finished remotely using the robotic arm. They removed an adapter plate to clear the way for reinstalling a nickel-hydrogen battery that was taken out during a previous upgrade. The reinstallation is required because the lithium-ion replacement battery turned out to be faulty. Eventually, a new lithium-ion battery will be sent up for installation.
A few glitches were encountered along the way: McClain occasionally had trouble hearing Mission Control and reported that a bit of moisture built on her helmet visor toward the end of the spacewalk. ...

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