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Russia appears set to finally address long-term, serious space station cracks

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Why This Matters

Russia's successful repair of long-standing cracks in the ISS's Zvezda module marks a significant step in maintaining the safety and longevity of the station, which is crucial for international space collaboration and future missions. This development highlights advancements in space repair techniques and the importance of international cooperation in addressing in-orbit challenges.

Key Takeaways

Ten days ago, in a moment of very high drama in orbit, NASA directed its astronauts living on the International Space Station to briefly seek emergency refuge in a Crew Dragon spacecraft.

Since then, neither the US space agency nor Roscosmos has provided additional public information about the situation in orbit. But according to sources who spoke to Ars, following the spectacle in space, the problem has been successfully fixed.

At issue were persistent cracks in a small area of the International Space Station attached to the Russian Zvezda service module, known as the PrK module. The problem has been ongoing since 2019, and Russian astronauts have been attempting various fixes, often using a sealant called Germetall-1.

The leaks intensify

These efforts finally appeared to bear fruit early this year, when Roscosmos reported that the leaks had stabilized. They resumed in May, though, and then increased in early June. That prompted Roscosmos to begin work toward a more extensive inspection and structural repair effort on the morning of Friday, June 5.

A bland statement from Roscosmos offered no additional information. But the solution Russian officials proposed on June 5 spooked NASA officials, prompting them to take the extreme step of securing their astronauts inside Dragon in case of a depressurization event on the space station. Later, Russia backed off, citing the need to conduct additional measurements and inspections of areas where leaks were occurring.

“NASA strongly supported that decision, and as a result, following that decision, Crew-12 and Williams ended their safe haven activities and returned to normal operations aboard the orbiting laboratory,” the space agency said.