Four astronauts aboard the International Space Station (ISS) have begun their journey back to Earth, cutting their mission short by over a month due to a medical issue, marking NASA’s first-ever medical evacuation from the orbiting laboratory. The crew, comprising American astronauts Mike Fincke and Zena Cardman, Russian cosmonaut Oleg Platonov, and Japanese astronaut Kimiya Yui, undocked from the ISS on Wednesday evening, January 14, 2026, and are scheduled to splash down in the Pacific Ocean near San Diego early Thursday morning.
The decision to return early was made after a health concern arose with one of the crew members, though NASA has not disclosed the individual’s identity or specific medical details, citing privacy concerns. Officials have stressed that the situation is not an emergency, and the affected astronaut is in stable condition and receiving appropriate care. NASA astronaut Zena Cardman remarked on the crew’s cohesion, saying, ‘Our timing of this departure is unexpected, but what was not surprising to me was how well this crew came together as a family to help each other.’
Crew-11, as the mission is known, launched to the ISS in August 2025 and was originally scheduled to remain until late February 2026. The medical issue prompted NASA to cancel a planned spacewalk on January 7 and subsequently announce the early return. NASA’s chief health and medical officer, James Polk, cited ‘lingering risk’ and uncertainty in diagnosis as key factors in the decision, emphasizing that it was safer to bring the crew back for ground-based medical evaluation.
This evacuation is a historic first for NASA in its 65 years of human spaceflight, although computer models had predicted such events could occur every three years. In contrast, the Russian space program has experienced similar incidents, notably in 1985 when cosmonaut Vladimir Vasyutin returned early from the Salyut 7 station due to a serious illness. The current situation underscores the inherent risks of long-duration space missions and the importance of robust medical protocols.
With the departure of four crew members, the ISS is now left with only three occupants: American astronaut Chris Williams and Russian cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, who arrived in November. NASA has stated that until a replacement crew arrives via SpaceX, currently targeted for mid-February, the station will be unable to conduct routine or emergency spacewalks, as these require a minimum crew size for safety.
The medical evacuation was one of the first major decisions by NASA’s new administrator, Jared Isaacman, who emphasized that astronaut health is the agency’s highest priority. Cooperation between NASA and Russia’s Roscosmos continues on the ISS, with crew rotations involving both nations, highlighting the station’s role as a symbol of international partnership in space exploration.
As the SpaceX Dragon capsule makes its way back to Earth, recovery teams are prepared in the Pacific to assist with splashdown and subsequent transport to Houston for further medical assessment. The event serves as a reminder of the challenges faced in human spaceflight and the resilience of astronauts and ground teams in adapting to unforeseen circumstances.
