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WATCH: NASA Expedition 59 spacewalk

NASA astronaut Anne McClain assists fellow NASA astronauts Christina Koch (L) and Nick Hague as they verify their U.S. spacesuits are sized correctly and fit properly ahead of a set of upcoming spacewalks at the International Space Station on March 18, 2019. Picture taken on March 18, 2019. Courtesy NASA/Handout via REUTERS   ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.
NASA astronaut Anne McClain assists fellow NASA astronauts Christina Koch (L) and Nick Hague as they verify their U.S. spacesuits are sized correctly and fit properly ahead of a set of upcoming spacewalks at the International Space Station on March 18, 2019. Picture taken on March 18, 2019. Courtesy NASA/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

NASA is live-streaming the Expedition 59 spacewalk online as astronauts Nick Hague and Christina Koch continue the work from a previous walk to install powerful lithium ion batteries on the International Space Station’s solar arrays.

The mission was originally planned as the first all-female spacewalk with Christina Koch and Anne McClain, but spacesuit availability and shifting assignments forced them to reschedule as Nick Hague — who joined McClain on the last spacewalk on March 22 — took McClain’s place.

Today’s spacewalk, Expedition 59, began at 8:20 a.m. EST and is expected to last 6.5 hours. Koch is the 14th woman to perform a spacewalk after McClain became the 13th on March 22.

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