NASA astronauts conduct second spacewalk for space station power upgrades - CNN

Early Wednesday, NASA astronauts Chris Cassidy and Robert Behnken conducted a spacewalk outside of the International Space Station to replace lithium ion batteries for one of the station's power channels. https://www.cnn.com/2020/07/01/us/nasa-july-spacewalk-cassidy-behnken-scn-trnd/index.html