In an unprecedented move, NASA conducted its first-ever medical evacuation from space early Thursday morning, returning four astronauts to Earth ahead of schedule due to a crew member experiencing health issues aboard the International Space Station.

The Dragon capsule, operated by SpaceX, successfully splashed down in the Pacific Ocean near San Diego under the cover of night. This operation concluded less than 11 hours after the team departed from the space station.

SpaceX announced the successful return on social media, stating, “Splashdown of Dragon confirmed – welcome back to Earth, @zenanaut, @AstroIronMike, @Astro_Kimiya, and Oleg!”

According to NASA, the astronaut in question was in a stable condition while in space. However, mission managers opted for an early return to ensure a comprehensive medical evaluation and diagnostic testing could be conducted on Earth.

Authorities noted that the return did not require any extraordinary measures, and standard medical teams were prepared to assist upon recovery.

The accompanying image, provided by NASA, captures recovery vessels approaching SpaceX’s Crew-11 capsule shortly after its splashdown near San Diego, California, in the early hours of Thursday, January 15, 2026. (NASA via AP)

The mission’s early conclusion left the space station temporarily staffed by just three astronauts — one American and two Russians — a configuration NASA said is manageable but limits some operations. 

Agency officials said no spacewalks, including emergency repairs, can be conducted until the arrival of the next crew.

This screengrab from video provided by NASA shows SpaceX Crew-11 members re entering the earth in a middle-of-the-night splashdown near San Diego, Calif., Thursday, Jan. 15, 2026. (NASA via AP)

NASA stressed that the decision was precautionary and not the result of an emergency. The health issue emerged on Jan. 7, prompting the cancellation of a scheduled spacewalk the following day and ultimately leading to the shortened mission.

This screengrab from video provided by NASA shows the NASA’s SpaceX Crew-11 members re entering the earth in a middle-of-the-night splashdown near San Diego, Calif., Thursday, Jan. 15, 2026. (NASA via AP)

It marked the first time NASA has cut short a spaceflight for medical reasons, though similar decisions were made by Russian space programs decades ago.

NASA and SpaceX said they are working to move up the launch of a replacement crew of four, currently scheduled for mid-February.