HOUSTON—NASA astronauts Drew Morgan and Christina Koch advanced a month-long, five-spacewalk effort to replace aging power storage batteries along the International Space Station’s (ISS) vaulting solar power truss on Oct. 11 with a nearly 7-hr. excursion. As the second outing in the spacewalk series concluded at 2:23 p.m. EDT, three of six new, more efficient lithium ion (Li) batteries had been installed in place of six of 12 nickel hydrogen (NH) batteries due for replacement ...

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