Propulsion bay leak delays Axiom-4 mission again

Propulsion bay leak delays Axiom-4 mission again

NEW DELHI [Maha Media]: The highly anticipated Axiom-4 mission, which was scheduled to launch on June 11 after a series of earlier delays, has been postponed once again due to a leak detected in the propulsion bay during a pre-launch test, according to SpaceX.

“Standing down from tomorrow’s (June 11) Falcon 9 launch of Ax-4 to the ISS 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 said in a post on X. 

ISRO Chairman Dr. V. Narayanan also took to X, saying, “The Axiom 04 mission, slated for launch on 11th June 2025 to send the first Indian Gaganyatri to the ISS, has been postponed. As part of launch vehicle preparations to validate the performance of the booster stage of the Falcon 9 launch vehicle, a seven-second hot test was carried out on the launch pad. During the test, a LOX (liquid oxygen) leak was detected in the propulsion bay.”

“Following discussions between ISRO, Axiom, and SpaceX experts, it has been decided to correct the leak and conduct the necessary validation tests before clearing the mission for launch. Hence, the launch of Axiom 04 has been postponed,” he added.

The mission, operated by the US-based Axiom Space, was set to carry Indian astronaut Group Captain Shubhanshu Shukla along with three international crew members to the International Space Station (ISS) aboard a SpaceX Falcon 9 rocket.

The launch was scheduled to take place from the Kennedy Space Center in Florida at 5:30 p.m. IST. The Axiom 04 mission has faced multiple delays, having been rescheduled from its original target of May 29 to June 8, then June 10, and most recently to June 11.

The mission is of major significance for India, as Shukla is set to become the first Indian to visit the International Space Station, and only the second Indian to travel to space, following Rakesh Sharma’s historic flight aboard the Soviet space station Salyut 7 in 1984.

Shukla will serve as the pilot of the Axiom 04 mission, with Commander Peggy Whitson from the United States leading the crew. The other crew members include Slawosz Uznanski-Wisniewski from Poland and Tibor Kapu from Hungary, both serving as mission specialists.

Once aboard the ISS, Shukla is expected to carry out experiments related to food and nutrition. The scientific mission is a collaboration between ISRO and the Department of Biotechnology (DBT), with additional support from NASA.

These experiments aim to advance the understanding of space nutrition and help develop self-sustaining life support systems critical for long-duration space exploration.

The research will focus on the effects of microgravity and space radiation on edible microalgae—a nutrient-rich, high-potential food source for future space missions.

The experiment will evaluate key growth parameters and examine transcriptomic, proteomic, and metabolomic changes in different algal species in space compared to their behaviour on Earth.
 

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