Axiom-4 mission postponed as SpaceX detects leak

WASHINGTON: 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 pic.twitter.com/FwRc8k2Bc0

— SpaceX (@SpaceX) June 11, 2025

“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.

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…

— ISRO (@isro) June 11, 2025

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.”

Despite the delay, the Axiom-4 mission remains significant. The Ax-4 crew includes members from India, Poland, and Hungary, marking each nation’s first mission to the space station in history and the second government-sponsored human spaceflight mission in over 40 years, according to Axiom Space. Group Captain Shubhanshu Shukla will be India’s second national astronaut to go to space since 1984.

Group Captain Shubhanshu Shukla is part of Axiom Space’s fourth private astronaut mission (Ax-4), marking a historic moment for India’s space collaboration with NASA.

Slawosz Uznanski, European Space Agency (ESA) project astronaut, will be the second Polish astronaut since 1978. Tibor Kapu will be the second national Hungarian astronaut since 1980. Peggy Whitson will command her second commercial human spaceflight mission, adding to her standing record for the longest cumulative time in space by an American astronaut.

According to Axiom Space, the Ax-4 mission will “realise the return” to human spaceflight for India, Poland, and Hungary, marking each nation’s first government-sponsored flight in more than 40 years.

While this is the second human spaceflight mission in history for these countries, it will be the first time all three will execute a mission aboard the International Space Station. This historic mission highlights how Axiom Space is redefining access to low-Earth orbit and elevating national space programs globally.

Ax-4 will be the second commercial spaceflight mission made up of government and ESA-sponsored national astronauts. The Ax-4 mission stands as a beacon of opportunity for India, Poland, and Hungary, each poised to leverage this mission to advance their national space programs.

The Ax-4 research complement includes around 60 scientific studies and activities representing 31 countries, including the US, India, Poland, Hungary, Saudi Arabia, Brazil, Nigeria, UAE, and nations across Europe.

This will be the most research and science-related activities conducted on an Axiom Space mission aboard the International Space Station to date, underscoring the mission’s global significance and collaborative nature to advance microgravity research in low-Earth orbit (LEO), per Axiom Space.

The mission emphasises scientific portfolios led by the US, India, Poland (in partnership with ESA), and Hungary. It aims to boost participation in these countries by involving diverse stakeholders, showcasing the value of microgravity research, and fostering international collaboration.

The studies will enhance global knowledge in human research, Earth observation, and life, biological, and material sciences, demonstrating the space research capabilities of the crew’s home nations.

Describing the team with whom he is going on the mission, Group Captain Shukla said, “The team that I’m flying with on this mission, it is fantastic. I do feel that I have exceptional crewmates. I will have these crew members for this one flight. But post this mission, these are going to be my friends for life. It has been an amazing journey. These are moments that really tell you that you are getting to be a part of something that is much larger than yourself”.

“I can only say how extremely fortunate I am to be a part of this. It is my sincere endeavor through my mission to inspire an entire generation back home in the country. I want to use this opportunity to ignite curiosity among kids. Even if this story, my story, is able to change one life, it would be a huge success for me. I’m Group Captain Subhanshu Shukla. and I am the mission pilot for Axiom 4 mission”, he said. (ANI)