NASA astronaut Chris Williams and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev returned to Earth on July 26, 2026, after a 241-day mission aboard the International Space Station (ISS). The crew landed via the Soyuz MS-28 spacecraft southeast of Dzhezkazgan, Kazakhstan, at 5:27 a.m. CDT, according to NASA’s official landing report.
Soyuz MS-28 Landing Timeline and Recovery
The crew undocked from the ISS at 2:03 a.m. CDT before beginning a three-and-a-half-hour descent to the Kazakh steppe. NASA reports the spacecraft utilized a parachute-assisted landing to touch down safely. Following the landing, recovery teams transported the three crew members by helicopter to Karaganda for mandatory medical evaluations.
The mission began on November 27, 2025, with a launch from the Baikonur Cosmodrome. During their eight-month stay, the crew completed 3,856 orbits and traveled more than 102 million miles, per NASA mission data. This flight marked the first space mission for Williams and Mikaev, while Kud-Sverchkov completed his second.
Did you know? The Soyuz spacecraft remains a critical link in orbital logistics, providing the primary Russian transport route for international crews despite geopolitical tensions.
Cancer Research and High-Performance Computing Objectives
Beyond the flight duration, the mission focused on specific scientific and engineering goals. NASA states that Chris Williams supported technology demonstrations and investigations into cancer-treatment research. He also worked on the in-space manufacturing of materials intended for use in electronics and high-performance computers.
NASA clarifies that these activities are research objectives. The agency’s release does not claim that these experiments have yet resulted in market-ready manufacturing processes or new medical treatments. According to NASA, results from these investigations require further analysis now that the samples and data have returned to Earth.
Critical Maintenance of the Canadarm2 Robotic Arm
Operational stability on the station depended on two spacewalks completed by Williams. NASA reports these excursions were used to prepare for power-system upgrades and to replace a faulty joint on the Canadarm2 robotic arm.
The repair of the Canadarm2 is significant because the arm is essential for robotic handling and general station support. While the repair was completed, NASA landing reports have not yet provided a long-term performance assessment of the arm’s functionality following the joint replacement.
Expedition 75 Transition and Crew Rotation
The return of Soyuz MS-28 triggered a leadership change on the station. Space.com reports that Sergey Kud-Sverchkov handed command of the ISS to NASA astronaut Jessica Meir prior to undocking, marking the transition from Expedition 74 to Expedition 75.
A new crew rotation is already in place. The Associated Press reports that NASA astronaut Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina arrived at the station on July 14 for an eight-month tour. They joined a crew consisting of Jessica Meir, Jack Hathaway, European Space Agency astronaut Sophie Adenot, and Andrei Fedyaev.
Pro Tip: To track real-time crew rotations and ISS orbital paths, refer to the official NASA ISS tracking portal.
U.S.-Russian Collaboration Amidst Geopolitical Tension
The successful return of the MS-28 crew highlights the continued operational partnership between NASA and Roscosmos. The Associated Press notes that this cooperation persists even as relations between Washington and Moscow are strained by the war in Ukraine.
This partnership is characterized by shared responsibility for crew rotations and coordinated recovery operations. NASA frames this ongoing research as a strategic stepping stone for the Artemis program, which aims to return humans to the Moon and eventually send crews to Mars.
Comparison of Mission Roles
| Focus Area | Primary Objective | Outcome/Status |
|---|---|---|
| Scientific | Cancer research & computing materials | Data awaiting Earth-side analysis |
| Engineering | Canadarm2 joint replacement | Repair completed; performance TBD |
| Operational | Expedition 74 to 75 handover | Command transferred to Jessica Meir |
Frequently Asked Questions
When did the Soyuz MS-28 crew land?
The crew landed on July 26, 2026, at 5:27 a.m. CDT in Kazakhstan.
Who was on the returning crew?
The crew included NASA astronaut Chris Williams and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev.
What was the primary purpose of Chris Williams’ spacewalks?
According to NASA, Williams performed two spacewalks to support power-system upgrades and replace a faulty joint on the Canadarm2 robotic arm.
How long was the mission?
The crew spent 241 days aboard the International Space Station.
Join the conversation: Do you think the technical cooperation on the ISS can survive long-term geopolitical instability? Share your thoughts in the comments below or subscribe to our aerospace newsletter for more updates on the Artemis missions.
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