NASA astronauts Jessica Meir and Christina Koch went outside the International Space Station (ISS) on Wednesday for the first of their, and you can follow along in the embedded livestream. The pair went on the last October.
Meir and Koch are replacing nickel-hydrogen batteries with “newer, more powerful lithium-ion batteries” as they upgrade ISS power systems on the Port-6 truss structure. Wednesday’s spacewalk kicked off around 6:50 a.m. ET and was supposed to last six-and-a-half hours.