SpaceX delayed the launch of Axiom Space's Ax-4 private astronaut mission to the International Space Station, originally scheduled for June 11th. A propellant leak in the Falcon 9 booster, discovered during post-static fire testing, requires repairs. The leak was initially detected on a previous flight and not fully addressed. While the launch is postponed indefinitely, NASA confirms launch opportunities remain through June and into July. The delay could impact the subsequent Crew-11 mission, also using the same booster.

Prepared by Jonathan Pierce and reviewed by editorial team.