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

Early Friday, NASA astronauts Chris Cassidy and Robert Behnken began a spacewalk outside of the International Space Station to replace lithium ion batteries for one of the station's power channels. It is expected to last for about seven hours. https://www.cnn.com/2020/06/26/us/nasa-june-spacewalk-cassidy-behnken-scn-trnd/index.html