SpaceX on Wednesday announced the postponement of the Falcon 9 launch of the Ax-4 mission to the International Space Station (ISS), citing the need for additional time to repair a liquid oxygen (LOx) leak.

"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," the company said in a post on X. Following the announcement, the Indian Space Research Organisation (ISRO) also confirmed the delay of the Axiom-4 mission, which was scheduled for launch on June 11, 2025, and was set to carry the first Indian Gaganyatri to the ISS.

In a statement, ISRO said: "Postponement of Axiom 04 mission slated for launch on 11th June 2025 for sending first Indian Gaganyatri to ISS. As part of launch vehicle preparation to validate the performance of booster stage of Falcon 9 launch vehicle, seven second of hot test was carried out on the launch pad. It is understood that LOX leakage was detected in the propulsion bay during the test. Based on the discussion on this topic by ISRO team with the experts of Axiom and SpaceX it has been decided to correct the leak and carry out necessary validation test before clearing for the launch. Hence the launch of Axiom 04 slated for 11th June 2025 for sending first Indian Gaganyatri to ISS is postponed. With regards, V. Narayanan, Secretary DOS/ Chairman ISRO and Chairman Space Commission."