{"id":9108,"date":"2026-11-05T23:17:17","date_gmt":"2026-11-05T23:17:17","guid":{"rendered":"https:\/\/propernews.co\/?p=9108"},"modified":"2026-11-05T23:17:17","modified_gmt":"2026-11-05T23:17:17","slug":"powering-the-future-astronauts-successfully-complete-historic-final-irosa-installation-on-the-international-space-station","status":"publish","type":"post","link":"https:\/\/propernews.co\/?p=9108","title":{"rendered":"Powering the Future: Astronauts Successfully Complete Historic Final iROSA Installation on the International Space Station"},"content":{"rendered":"

The International Space Station has officially secured its energy future. On Thursday, November 5, 2026, Expedition 75 flight engineers Anil Menon of NASA and Joshua Kutryk of the Canadian Space Agency (CSA) successfully installed and deployed the eighth and final International Space Station Roll-Out Solar Array (iROSA). This meticulous extravehicular activity (EVA), lasting 6 hours and 59 minutes, marks the culmination of a multi-year, highly complex engineering campaign designed to upgrade the orbiting laboratory\u2019s aging electrical grid. <\/p>\n

Operating on the starboard side of the station\u2019s backbone truss along the 3B power channel, the two astronauts completed a series of intricate maneuvers that fundamentally enhance the orbital outpost’s capabilities. With all eight iROSAs now fully operational, the station’s total power generation capacity has increased by up to 30%, guaranteeing sufficient electricity to support vital scientific research, life support systems, and station operations through the remainder of the facility\u2019s operational lifetime, which is scheduled to conclude with a controlled deorbit in late 2030.<\/p>\n

The Historic Spacewalk: Overcoming On-Orbit Challenges<\/p>\n

The spacewalk began at 8:36 a.m. EST, with Menon and Kutryk stepping out into the harsh vacuum of low Earth orbit. Their primary task was to retrieve the massive, 750-pound (340-kilogram) iROSA assembly from a temporary stowage platform, transport it across the exterior of the complex using the Canadarm2 robotic arm, and mount it onto a pre-assembled bracket kit. <\/p>\n

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While the hardware transfer proceeded smoothly, the crew encountered an unexpected complication during the electrical integration phase. As Menon began attaching the power cables to tie the new solar array into the station’s existing architecture, telemetry data flagged a potential anomaly. <\/p>\n

"We are seeing half of the expected shunt current that we want," radioed Nichole Stilwell, the NASA astronaut serving as the spacewalk officer in Mission Control Houston. "In this current config, we are not necessarily going to deploy."<\/p>\n

To safely investigate and resolve the issue, flight controllers and the crew had to navigate strict safety protocols. Because photovoltaic arrays actively generate high-voltage electricity whenever they are illuminated by direct sunlight, troubleshooting the wiring required waiting for the space station to pass into the shadow of the Earth. During this orbital night pass, Menon and Kutryk used the downtime productively, cleaning up their immediate worksite and stowing the Canadarm2 robotic arm. <\/p>\n

Once Earth\u2019s shadow shielded the worksite, the astronauts inspected the physical connectors. The proactive troubleshooting proved successful. Shortly after orbital sunrise brought the station back into the light, Mission Control verified that the telemetry readings had normalized. "We are seeing good shunt currents on the ground, so we are go for deploy," Stilwell radioed to the crew.<\/p>\n

Following the clearance, Kutryk and Menon released the array\u2019s dual retention bolts. Without the need for motorized mechanical drives, the iROSA unfurled entirely on its own accord, driven solely by the potential energy stored within its flexible carbon-composite roll-out booms. Over the course of approximately 10 minutes, the solar blanket stretched outward to its full 63-foot (19-meter) length, locking firmly into its operational configuration.<\/p>\n

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A Multi-Year Evolution of Space Station Power<\/p>\n

The successful deployment on November 5 represents the end of an ambitious, multi-phase electrical overhaul that began half a decade prior. The original silicon-based solar array wings, launched primarily between 2000 and 2009, were engineered with a 15-year design life. As these legacy arrays steadily degraded over time due to the punishing environment of low Earth orbit\u2014including atomic oxygen exposure, thermal cycling, and micrometeoroid impacts\u2014flight controllers noticed a gradual decline in overall power output.<\/p>\n

To prevent an energy deficit that could cripple future research, NASA and its international partners devised the iROSA solution: compact, highly efficient roll-out blankets that overlay the existing arrays. Each iROSA delivers an extraordinary performance-to-size ratio, measuring roughly half the physical length of the legacy wings while generating up to 40% more electricity per unit.<\/p>\n

The phased rollout campaign unfolded across several key missions:<\/p>\n