New ISS Leak Sparks Concerns Over Space Station Safety

International Space Station (ISS) faces serious issues again after the Russian segment was reported to have an atmospheric leak into space. The damage occurred in the PrK module, a small transfer tunnel connecting the main service module Zvezda to the docking port for visiting vehicles. This latest incident has reignited concerns over the long-term safety of the ageing space station, while also confusing NASA, which had previously believed the problem was permanently resolved. The crack-induced leak has been tracked by engineers from both nations for over half a decade, but the source has proven difficult to locate and fix. The leak even led NASA to delay last year’s Axiom Space Ax-4 private astronaut mission, though it was later cleared for launch in late June 2025. Unfortunately, the situation did not last long as the leak was detected again. A gradual drop in air pressure was observed on 1 May 2026, coinciding with Russian cosmonauts unloading cargo from the newly arrived Progress 95 spacecraft. NASA spokesperson Josh Finch stated they are losing about one pound of air mass per day. Roscosmos, the Russian space agency, is allowing pressure in the transfer tunnel to gradually decrease while monitoring the rate. ‘The area is now maintained at lower pressure, with small repressurisations as needed. There is no impact on station operations, and NASA and Roscosmos are coordinating next steps,’ Finch said. The recurring technical issue occurs amid political and budgetary debates over the ISS’s future. Several station modules have been in space for nearly three decades, with the ISS now entering its 26th year of human habitation. The planned decommissioning of the ISS by 2030 aims to allow NASA to transition to a commercial era in low Earth orbit, funding the development of private space stations and acting as a customer. However, this commercial strategy faces hurdles as private companies worry about the government’s plans to extend the ISS’s lifespan. Commercial firms state their platforms will be ready by 2030, meaning an ISS extension could disrupt the nascent market ecosystem being built. Former NASA commercial spaceflight director Phil McAlister has also voiced support for retiring the ageing station on schedule for safety and efficiency. He views the latest leak as a strong indicator that the ageing station should be replaced with a safer platform. Source: Ars Technica, Starlust