Five astronauts on the International Space Station (ISS) sought shelter and prepared for potential evacuation due to a deteriorating air leak, which prompted NASA to take precautionary measures. The crew, consisting of four members from the Crew-12 mission and an additional U.S. astronaut, temporarily relocated to the SpaceX-built Crew Dragon spacecraft attached to the station. After a two-hour assessment, NASA allowed the astronauts to return to the ISS while monitoring the air leak situation.

NASA and Russia’s Roscosmos have been investigating air leaks on the ISS for some time, particularly in the Russian Zvezda service module. Former NASA chief astronaut Chris Cassidy mentioned that the issue has persisted for several years, requiring collaborative efforts to address. Roscosmos reported identifying two leaks but assured that there was no immediate danger to the crew.

Efforts were made to seal the first leak swiftly, with plans in motion to address the second leak. The leak rate intensified from one to two pounds of air per day, raising concerns about the potential impact on the station’s atmosphere. The ISS currently houses seven astronauts from two missions, including the Crew-12 team and another crew that arrived in November.

Russian cosmonauts attempted to access the leak by using a saw, prompting NASA to implement safe-haven procedures as a precaution. Such emergency protocols are rare on the ISS, with safety being a top priority for crew members. Following a pause in repair activities by Roscosmos, NASA rescinded the safe-haven order, emphasizing the importance of collaboration in resolving the leaks.

The NASA spokesperson expressed optimism about working with Roscosmos to find a lasting solution to the air leak issue. Legislative efforts are underway in the U.S. Congress to extend the ISS’s operational lifespan, reflecting the broader focus on space exploration and competition with other nations’ space programs.