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[b]ISS Expedition 64: U.S. Spacewalk 72[/b] NASA astronaut Kate Rubins and Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi exited the International Space Station's Quest airlock on Friday (March 5) to complete the installation of solar array modification kits, which were started during a Feb. 28 spacewalk in preparation for solar array upgrades. The pair set their spacesuits to battery power at 6:37 a.m. EST (1137 GMT), signifying the start of the extravehicular activity (EVA), which is expected to last about six and a half hours. Rubins and fellow NASA astronaut Victor Glover began the work to install the modification kits on the farthest set of solar rays on the station's Port 6 (P6) truss structure. Noguchi and Rubins are completing the installation and configuration of the kits in preparation for new solar arrays. The new solar arrays, which will be delivered to the space station on upcoming SpaceX Dragon cargo missions, are a larger version of the Roll-Out Solar Array (ROSA) technology and will ultimately increasing the station's total available power from 160 kilowatts to up to 215 kilowatts. Following solar array modification kit configuration, Rubins will conduct cable routing for the Bartolomeo platform Parking Position Interface (PAPOS) on the Columbus module, Noguchi will replace a Wireless Video System External Transceivers Assembly (WETA), and the pair will perform other get-ahead work as time permits. This is the 236th spacewalk in support of space station assembly. Rubins is designated extravehicular crew member 1 (EV 1) and is wearing a spacesuit bearing red stripes. Noguchi is EV 2, wearing a suit with no stripes.
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