Expedition 61 Flight Engineers Christina Koch and Andrew Morgan of NASA concluded their spacewalk at 2:40 p.m. EDT. During the seven-hour and one minute spacewalk, the two NASA astronauts began the replacement of nickel-hydrogen batteries with newer, more powerful lithium-ion batteries on the far end of the station’s port truss. Astronauts also were able to accomplish get-ahead tasks, including …
First of Five Power Upgrade Spacewalks This Month Wraps Up
