Imagine plunging through the atmosphere at 28,000 kmph, wrapped entirely in a glowing layer of superheated plasma reaching 2,000°C. On July 26, 2026, NASA astronaut Chris Williams and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev slammed into the Kazakh steppe, ending a 241-day mission aboard the International Space Station. Their fiery return marks the close of Expedition 74, a mission that pushed boundaries in microgravity medical research and advanced manufacturing. The flight also proved that US-Russian cooperation in low Earth orbit remains highly functional despite severe geopolitical friction back on the ground.
The Breakdown
Here is exactly how the 8-month timeline unfolded for the international crew. The mission kicked off on November 27, 2025, when the Soyuz MS-28 spacecraft launched from the Baikonur Cosmodrome. For Williams and Mikaev, this marked their very first journey into the void, while Kud-Sverchkov was logging his second long-duration spaceflight.
Williams brought a highly specialized background to the orbital laboratory. Before joining NASA's astronaut corps in 2021, he served as a volunteer firefighter, an emergency medical technician, and a board-certified medical physicist at Harvard Medical School, holding a Ph.D. in astrophysics from MIT. This background proved essential as he spent his time in orbit contributing to research targeting new cancer treatments.
Life on the station involved an intense mix of biology, physics, and heavy maintenance. Williams stepped outside the airlock for two critical spacewalks during his stay. One of those excursions required him and astronaut Jessica Meir to spend 7 hours and 20 minutes replacing a faulty wrist joint on the massive Canadarm2 robotic arm. Meanwhile, his Russian colleagues executed their own spacewalk to install a solar radiation instrument and set up equipment for the Sun-Terahertz experiment.
The departure sequence officially began on Saturday morning with a change-of-command ceremony. Kud-Sverchkov handed control of the orbiting outpost over to Meir. By 3:03 a.m. EDT on Sunday, the Soyuz MS-28 capsule physically undocked from the station's Rassvet module and slowly backed away into the blackness.
Technical Specs / How It Works
Let's break down the sheer mechanical violence and orbital logistics required to bring three humans safely back to solid ground. Returning from orbit is fundamentally an extreme engineering trial designed to bleed off immense velocity.
- Distance Logged: During their eight months in space, the crew traveled more than 102 million miles (164 million kilometers). To put that in perspective, they completed exactly 3,856 orbits around Earth.
- The De-Orbit Burn: Exactly two-and-a-half hours after undocking from the ISS, the Soyuz spacecraft properly aligned itself for descent. It then fired its braking rockets in the opposite direction of travel for exactly 4 minutes and 42 seconds.
- Plasma Inferno: Hitting the atmosphere at nearly 28,000 kmph, the capsule compressed the air directly in front of it. This violent compression generated a superheated plasma layer with temperatures ranging from 1,500 to 2,000°C.
- Ablative Shielding: To protect the crew from incineration, the Soyuz utilizes an ablative heat shield that slowly burns away, intentionally carrying the extreme thermal energy with it. This thick plasma field also triggers a complete radio communications blackout that lasts for several minutes.
- Gravity's Crush: Following the deployment of the main parachute, the capsule executed a jarring, rocket-assisted touchdown on the steppe of Kazakhstan at 6:27 a.m. EDT. Upon impact, the astronauts endured violent physical forces equal to four to five times their own body weight.
Expert & Official Reactions
Astronauts undergo a brutal physiological transition once they hit the dirt. After months floating in weightlessness, their bones lose density, muscles severely weaken, and basic blood circulation struggles to adapt. Even attempting to stand up can induce overwhelming dizziness and a steep decline in coordination.
Russian recovery teams immediately swarmed the charred capsule near Dzhezkazgan, pulling the battered crew out and settling them into reclining chairs for initial medical checks. Despite the immense physical toll, spirits at the landing site were remarkably high.
Commander Kud-Sverchkov looked relaxed as he made satellite phone calls to his family. "I am feeling better and better with each moment," he stated from his recliner. "I would like to thank everyone who supported this landing. Everything was smooth and perfect. Everything was just excellent".
The Russian ground crews presented all three men with personalized nested matryoshka dolls as welcome-home gifts. When someone joked through a translator that the dolls had vodka hidden inside, one crew member quickly fired back: "Well, actually, this is why I flew to space in the first place".
Reflecting on his time in orbit, Williams emphasized the deep bond he forged with his international colleagues. "It's a really great crew," he noted. "Sergey and Sergey are both just absolutely wonderful people, really kind, super interested, super intellectually curious".
For Williams, the journey satisfied a lifelong ambition. "As far back as I can remember, so when I was a little kid, I was always fascinated by exploration and, in particular, space," he explained. He added that gazing out the window gave him a profound appreciation for Earth, noting that anyone who visits orbit turns into "a little bit of a budding geologist".
Future Outlook & Next Steps
What actually happens now that Expedition 74 has wrapped up? The paths of the astronauts immediately diverged on the Kazakh steppe.
Williams boarded a NASA jet heading directly to the Johnson Space Center in Houston, where he will undergo extensive post-flight rehabilitation and debriefing. Meanwhile, Kud-Sverchkov and Mikaev caught a separate flight back to their training base in Star City, just outside of Moscow. The scientific data and physical samples they produced will be processed by researchers to extract final medical and commercial findings.
Up in orbit, Expedition 75 is already running at full speed under the command of Jessica Meir. She is currently working alongside NASA astronaut Jack Hathaway, European Space Agency astronaut Sophie Adenot, and Roscosmos cosmonaut Andrey Fedyaev.
That crew was recently bolstered by a fresh delivery of personnel. NASA's Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina arrived at the station on July 14 aboard the Soyuz MS-29 spacecraft. NASA Administrator Jared Isaacman personally attended their launch, marking the first time a NASA chief visited the Baikonur Cosmodrome in eight years.
The new team has a heavily packed schedule aimed at pushing the boundaries of low Earth orbit commercialization. Over the coming months, they will investigate novel in-space manufacturing methods, test artificial intelligence and augmented reality tools for monitoring crew health, and experiment with the bioprinting of human tissue. These exact physiological and engineering studies provide the required foundation for long-duration missions to the Moon under the Artemis program, and later to Mars.
The International Space Station will see its next major rotation very soon. A brand new NASA-sponsored crew is officially slated to launch from Florida on September 12.
Comments