The four-person Ax-4 mission to the International Space Station (ISS) was supposed to lift off atop a SpaceX Falcon 9 rocket from NASA's Kennedy Space Center in Florida on Wednesday morning (June 11). But that's no longer the plan. "Standing down from tomorrow's Falcon 9 launch of Ax-4 to the @Space_Station to allow additional time for SpaceX teams to repair the LOx leak identified during post static fire booster inspections. Once complete " and pending Range availability " we will share a new launch date," SpaceX announced via X on Tuesday evening (June 10).