On June 5, 2026, at precisely 13:04 UTC, NASA took precautionary measures aboard the International Space Station (ISS) due to escalating air leaks. Astronauts were instructed to don their spacesuits and seek shelter within their Crew Dragon spacecraft in preparation for possible evacuation. This decision came as Russian crew members were engaged in attempts to fix two significant leaks that had been detected on their side of the station.

The Situation on the ISS

Less than two hours later, NASA's Mission Control gave the green light for the astronauts to exit their temporary safe haven. The team, which includes two U.S. astronauts, a French astronaut, and a Russian cosmonaut, was informed that repair efforts on the leaks had been paused for further evaluation of the situation. These leaks are located in a transfer tunnel module known as PrK on the Russian side of the ISS, an issue that has persisted since 2019 and has been a point of ongoing discussion between NASA and Russia's space agency, Roscosmos.

History of the Leaks

NASA officials had previously expressed concerns about the leaks, suggesting that they could potentially lead to a catastrophic failure if not addressed. Reports indicate that a senior NASA official revealed that the air leakage had significantly increased, escalating from about one pound (0.45 kg) of air loss per day to two pounds (0.9 kg) shortly before the emergency measures were enacted. This rise in leakage triggered immediate action from NASA to ensure the safety of the crew aboard the space station.

Current Repair Efforts

On the same day, Roscosmos announced that their cosmonauts had successfully sealed one of the two identified leaks, although the second leak remained unresolved. They assured that the situation does not pose any immediate threat to the crew’s safety or the integrity of the ISS's systems, with pressure levels stabilized at the intended rate. NASA spokesperson Bethany Stevens emphasized the importance of monitoring these leaks, indicating that they are a serious concern for NASA.

Collaboration Between Agencies

As the situation unfolded, Roscosmos decided to halt the repair operations temporarily to gather further measurements and data. Consequently, NASA instructed the crew members in the Crew Dragon to end their sheltering measures and resume regular activities aboard the ISS. This collaboration between NASA and Roscosmos reflects the ongoing partnership in maintaining the safety and functionality of the space station, which has been continuously inhabited for over 25 years.