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Washington, Mar 29 (Canadian-Media): National Aeronautics and Space Administration (NASA) astronauts Nick Hague and Christina Koch have begun the second spacewalk to complete the installation of new batteries to upgrade the International Space Station’s power capability, media reports said.
This is the 215th spacewalk in support of space station assembly and maintenance.
Hague is extravehicular crew member 1 (EV 1), wearing the suit with red stripes and helmet camera #20. Koch is extravehicular crew member 2 (EV 2), wearing the suit without stripes and helmet camera #18.
Hague and Koch from the Expedition 59 crew switched their spacesuits to battery power at 7:42 a.m. EDT to begin the estimated six-and-a-half hour spacewalk.
59th Expedition is the 59th expedition to the International Space Station, started on 14 March 2019 with the arrival of the Soyuz MS-12 spacecraft carrying Aleksey Ovchinin, Nick Hague and Christina Koch.
Aleksey Ovchinin/Twitter Nick Hague/Twitter Christina Koch/Twitter
This is the second battery replacement spacewalk in the past week. The batteries store power generated by the station’s solar arrays to provide power to the microgravity laboratory when the station is not in sunlight as it circles Earth during orbital night.
One of those new lithium ion batteries has not been successfully holding a charge, so as part of today’s spacewalk, Hague will begin preparations for robotic operators to replace the new battery that is not working with the two old batteries, ensuring optimal power supply at the space station.
Meanwhile, Koch will prepare the worksite for the delivery of the next six new lithium ion batteries that will arrive to the station aboard a Japanese H-II Transfer Vehicle later this year to upgrade a third set of the solar arrays.