NASA astronaut Chris Williams returns to Earth after 241 days and 102 million miles in space

NASA astronaut Chris Williams returned to Earth on Sunday after completing his first mission aboard the International Space Station (ISS), concluding an eight-month stay that saw him conduct cutting-edge scientific research, perform two spacewalks and help maintain the orbiting laboratory.

Williams landed safely in Kazakhstan alongside Russian cosmonauts Sergei Kud-Sverchkov and Sergei Mikaev aboard the Soyuz MS-28 spacecraft. The capsule parachuted into the steppes southeast of Dzhezkazgan at 5:27 a.m. CDT after undocking from the ISS around three and a half hours earlier, marking the end of a 241-day mission in low Earth orbit.

Recovery teams reached the crew shortly after landing and carried out routine medical checks before transporting them by helicopter to Karaganda. Williams is scheduled to return to NASA's Johnson Space Center in Houston for post-flight rehabilitation, while Kud-Sverchkov and Mikaev will head to Russia's Star City training centre.

Science, spacewalks and more

Launched on November 27, 2025, the trio spent 241 days aboard the ISS, completing 3,856 orbits of Earth and travelling more than 102 million miles. The mission was the first journey into space for Williams and Mikaev, while Kud-Sverchkov completed his second long-duration expedition.

Serving as an Expedition 74 flight engineer, Williams played a key role in scientific investigations aimed at improving life on Earth and preparing for future deep-space exploration. His work included supporting research into potential cancer treatments and experiments to manufacture advanced materials in microgravity for next-generation electronics and high-performance computing.

The unique microgravity environment aboard the ISS enables scientists to study biological processes and develop manufacturing techniques that are difficult to replicate on Earth. Findings from these experiments are expected to contribute to advances in healthcare, commercial space activities and future missions to the Moon and Mars.

Williams also completed two spacewalks during his first mission. One focused on upgrading the station's power system for future enhancements, while another saw him and NASA astronaut Jessica Meir replace a faulty wrist joint on Canadarm2, the ISS's robotic arm, during a seven-hour-and-20-minute excursion.

Space cooperation continues

The successful return also highlighted the continued partnership between NASA and Russia's Roscosmos despite broader geopolitical tensions following Moscow's invasion of Ukraine in 2022. While relations between Washington and Moscow remain strained, both space agencies continue to share crew transport and operational responsibilities aboard the ISS.

The returning crew handed over responsibilities to Expedition 75, which recently welcomed NASA astronaut Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina after their launch from the Baikonur Cosmodrome in Kazakhstan on July 14. They joined NASA astronauts Jessica Meir and Jack Hathaway, European Space Agency astronaut Sophie Adenot and Roscosmos cosmonaut Andrei Fedyaev for the station's next phase of scientific operations.

NASA Administrator Jared Isaacman attended the July launch, marking the first visit by a NASA chief to the Baikonur Cosmodrome in eight years, underscoring the agency's continued commitment to international cooperation in space exploration.

(With agency inputs)