Space station leak investigation prompts NASA, Axiom Space to postpone launch
An ongoing leak on the Russian side of the International Space Station has prompted the indefinite postponement of a planned human spaceflight from Kennedy Space Center, according to NASA.
Axiom Space was aiming to launch its Ax-4 mission with four private astronauts this week atop a SpaceX Falcon 9 from KSC’s Launch Pad 39-A, and had already faced delays because of weather and a liquid oxygen leak on the rocket’s booster.
But while SpaceX was prepared to perform a static fire Thursday to check on the booster repairs, NASA announced the visit from Axiom Space was going on hold because of an investigation with Russian space agency Roscosmos into recent repairs made on the Zvezda service module.
The Zvezda module leaks first began in 2019 but worsened in 2024. To mitigate its effects, Roscosmos has been keeping the hatch to the module closed when not in use as a docking port for Progress resupply and Soyuz spacecraft.
The most recent repairs on the aft-most segment of the module have halted the loss of pressure, NASA stated, but the agency still opted to delay Axiom’s visit.

