August 10, 2025 (JST)

Japan Aerospace Exploration Agency (JAXA)

 The Crew Dragon spacecraft (Crew-10) has safely returned to Earth with JAXA Astronaut ONISHI Takuya abord, who completed his long-duration mission on the International Space Station (ISS).

NOTE:
➣ The Crew-10 crews stayed for 147days, 16 hours and 30 minutes in space (145 days, 18 hours and 11 minutes in the ISS).
➣ Accumulative Days of JAXA Astronaut ONISHI Takuya both in space and the ISS
・In space: 262 days, 18 hours and 52 minutes (The fifth record among the Japanese astronauts)
・In the ISS: 258 days, 14 hours and 40 minutes (The fifth record among the Japanese astronauts)

Reference links for further information:
https://humans-in-space.jaxa.jp/en/astronaut/onishi-takuya/

I am pleased to announce the safe return of the Crew Dragon spacecraft (Crew-10) carrying JAXA Astronaut ONISHI Takuya. The spacecraft splashed down safely in the Pacific Ocean off the coast of San Diego, California, U.S.A., today, following his long-duration mission aboard the International Space Station (ISS).

This was Astronaut Onishi’s second long-duration mission on the ISS. During the 73rd long-duration mission, he served as the third Japanese ISS Commander, assuming a vital leadership role in overseeing the safety of the crew and coordinating mission operations aboard the ISS.

Under the mission theme of “Bringing Out the Full Potential of Kibo”, he made use of his prior experience as a Flight Director to work closely with the ground control team and researchers, contributing to a wide range of experiments designed to benefit us on Earth. These included life science experiments aimed at elucidating the mechanisms of gravity sensing in cells, as well as scientific investigations such as protein crystal growth and combustion observation experiments.

He also contributed to the demonstration of drone robot technologies to improve the efficiency of onboard operations, various experiments and technological validations conducted by private companies, and outreach activities including live communication events with audiences ranging from children to adults. Through these efforts, he made significant contributions to international space exploration, expansion of private-sector utilization, and fostering the next generation of scientific and technological talent.

After returning to Earth, I expect Astronaut Onishi to leverage the expertise gained through his ISS mission to support Astronaut YUI Kimiya, who succeeded him aboard the ISS, as well as to contribute to the training of following JAXA astronauts. Moreover, I am confident that his experience will be reflected in the development of future Low Earth Orbit (LEO) activities toward the post-ISS era, technological advancement for international space exploration, and enhancement of international cooperation.

I would like to express my heartfelt gratitude to our international partners, including NASA, ESA, CSA, and Roscosmos, as well as to the relevant domestic organizations and the people of Japan for their continued support and cooperation. Your continued encouragement and assistance would be highly appreciated.

August 10, 2025
YAMAKAWA Hiroshi,
President
Japan Aerospace Exploration Agency (JAXA)