Private space flight mission by Axiom Space.

Splashdown of the Dragon Grace ship on the Ax-4 mission at about 09:31:41 UTC on July 15, 2025 close to 32.6 N, 117.7 W off the coast of San Diego (50 km west of San Diego).

The Ax-4 research complement included around 60 scientific studies and activities representing 31 countries, including the U.S., India, Poland, Hungary, Saudi Arabia, Brazil, Nigeria, UAE, and nations across Europe. This was 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). The mission emphasizes scientific portfolios led by the U.S., 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.