Spacewalk to Upgrade Space Station's Power System

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On July 21, NASA astronauts Chris Cassidy and Robert Behnken will conduct a spacewalk to perform a number of tasks designed to upgrade station systems. Coverage will begin around 7:15 a.m. EDT, and may last up to seven hours. This will be both astronauts’ 10th spacewalk outside the orbital lab and Behnken’s final before returning to Earth on SpaceX’s Dragon Endeavor on August 2.


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