NASA astronauts unfurl 4th roll-out solar array on spacewalk outside space station
The International Space Station has a fourth new solar array thanks to the work of NASA astronauts Frank Rubio and Josh Cassda on a seven-hour spacewalk.
TroibNews 
The International Space Station has a fourth new solar array thanks to the work of NASA astronauts Frank Rubio and Josh Cassda on a seven-hour spacewalk.
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