Astronauts Christina Koch and Jessica Meir will venture outside the orbiting outpost starting at 7:50 a.m. Thursday or Friday, depending on station schedules.
Published 7:17 PM EDT Oct 15, 2019
The units regulate how much energy flows from the station's massive solar panels to batteries that provide power during nighttime passes around Earth. Three previous spacewalks had been planned to replace lithium-ion batteries, but those will be rescheduled until the latest issue is resolved. NASA astronauts Jessica Meir, left, and Christina Koch, right, have been tasked with replacing a faulty ISS power unit. It will mark the first all-female spacewalk.This week's spacewalk – Koch's fourth and Meir's first – will see the astronauts move the new hardware, install it, then return the faulty version to the airlock for future investigation.
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