NASA astronauts Christina Koch and Jessica Meir work on their U.S. spacesuits

iss061e121931 (Jan. 15, 2020) --- NASA astronauts Christina Koch (left) and Jessica Meir work on their U.S. spacesuits ahead of a spacewalk they conducted to install new lithium-ion batteries that store and distribute power collected from solar arrays on the station’s Port-6 truss structure.