NASA astronaut Chris Williams and his crewmates from Roscosmos have successfully returned home after an eight-month mission aboard the International Space Station, completing nearly 4,000 orbits and conducting vital scientific research in space.
- Spent 241 days on the International Space Station
- Completed 3,856 Earth orbits and traveled 102 million miles
- Conducted research on cancer treatments and space material production
What happened
Chris Williams returned to Earth on July 26 after completing a lengthy mission aboard the International Space Station that began in late November 2025. He returned alongside Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev aboard the Soyuz MS-28 spacecraft, which landed safely by parachute in Kazakhstan. Their journey covered more than 102 million miles and involved nearly 4,000 trips around the planet.
During their time in space, the crew handled critical tasks including multiple spacewalks, one of which involved preparing the station for power system upgrades, and another that repaired important robotic equipment. This mission marked the first spaceflight for both Williams and Mikaev, while Kud-Sverchkov returned for his second.
Why it feels good
The astronauts' work extends far beyond the station, contributing directly to scientific advancements that could improve life on Earth and enable future explorations. Williams' experiments touched on promising areas such as developing new cancer therapies and improving technology used in high-performance computers through materials research conducted in microgravity.
This mission also supports the broader goals of NASA’s Artemis program by helping the agency understand the challenges of long-term human spaceflight, while the continuous human presence on the ISS for over 25 years stands as a testament to international cooperation and scientific achievement.
What to enjoy or watch next
Following their safe return, the crew will undergo medical evaluations before returning to their respective homes and work centers. Williams will head to NASA’s Johnson Space Center in Houston to begin recovery and debriefing. Meanwhile, ongoing experiments aboard the ISS and upcoming missions continue to push the frontiers of space science.
Looking ahead, NASA and its partners are focused on preparing for more ambitious missions to the Moon and eventually Mars. The knowledge and experience gained from expeditions like Williams' pave the way for these exciting next steps in human space exploration.