A recent leak on the International Space Station (ISS) has prompted concerns among NASA officials and engineers. The agency has delayed one crew launch due to the issue, but is being tight-lipped about the situation.
The ISS, which launched in 1998, features an aluminum structure prone to leaks. Since 2019, a slow leak has been detected in the transfer tunnel of the Russian Zvezda service module. Despite repairs by Roscosmos and NASA, the leak rate remained high, with air escaping at around 2 pounds per day.
In a recent update, both agencies confirmed that the repair work was complete, stating that the PrK module had been “completely sealed.” However, this news is contradicted by reports of continued air pressure loss on the ISS. The cause of this discrepancy remains unclear, raising concerns about the long-term stability of the station.
Source: https://arstechnica.com/space/2025/06/theres-another-leak-on-the-iss-but-nasa-is-not-saying-much-about-it