NASA astronauts unfurl 4th roll-out solar array on spacewalk outside space station

The International Space Station (ISS) has a fourth new solar array thanks to the work of two NASA astronauts on a seven-hour spacewalk. Frank Rubio and Josh Cassada, both flight engineers on the space station's Expedition 68 crew, again ventured outside of the orbiting complex on Thursday (Dec. 22) to install a new ISS Roll-Out Solar Array (iROSA) to augment the station's power supply. The spacewalk was a near repeat of the extravehicular activity (EVA) that Rubio and Cassada performed almost three weeks ago, but this time focused solely on a power channel located on the station's port-side truss. More

(Source: Space.com - Dec 23)