NASA / Chris CassidyJust thought I'd share these amazing photos taken by NASA astronaut Chris Cassidy as he and fellow crew member Bob Behnken—who joined him aboard the International Space Station (ISS) after a historic launch aboard a SpaceX Crew Dragon capsule last month—conducted a spacewalk that continued the replacement of 48 aging nickel-hydrogen batteries with 24 new lithium-ion units in an effort that began in January of 2017. As you can see in these images, the Crew Dragon spacecraft, dubbed Endeavour by Behnken and fellow Demo-2 astronaut Doug Hurley shortly after launch, is connected to the Harmony node (with Europe's Columbus module visible in the foreground). Below Harmony is Japan's H-II Transfer Vehicle that launched to the ISS on May 20.
NASA / Chris Cassidy
Cassidy and Behnken are set to resume the replacement of batteries during another spacewalk next Wednesday. In all, the two astronauts are intended to conduct a total of four Extra-Vehicular Activities (EVAs) before Behnken and Hurley are supposed to return to Earth aboard Endeavour as early as August 2. If things don't go according to plan in the next spacewalk, then the last two EVAs will be deferred to a future ISS crew so Behnken and Hurley can return home as scheduled.
NASA / Chris Cassidy
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