An astronaut from NASA was admitted to the hospital due to a health concern following the crew's delayed arrival back on Earth from the space station.

A four-person crew from the International Space Station returned to Earth later than expected on Friday morning, resulting in a NASA astronaut remaining hospitalized.

On Friday, at approximately 3:30 a.m. ET, the crew consisting of NASA astronauts Matthew Dominick, Michael Barratt, and Jeanette Epps, and Roscosmos cosmonaut Alexander Grebenkin splashed down off the coast of Pensacola, Florida.

The remaining astronaut, who was not named by NASA, is in stable condition and being observed as a precaution due to a "medical issue."

NASA stated that to safeguard the medical privacy of the crew member, no specifics regarding the individual's condition or identity will be disclosed.

The other three have returned to NASA's Johnson Space Center in Houston.

NASA announced that the SpaceX Dragon capsule, which separated from the space station on Wednesday evening, had a "without incident" reentry into the Earth's atmosphere and landing.

The agency expressed gratitude to Ascension Sacred Heart for its support and praised its team for acting swiftly to safeguard the crew members.

The astronauts' stay on the space station exceeded the planned duration by two months.

During a Friday press conference following splashdown, a NASA official stated that the crew was in good health, without disclosing any medical concerns.

The Boeing Starliner crew will remain at the space station until February, flying home in a SpaceX capsule that launched last month with two empty seats.

Wimore and Williams will remain at the space station for eight months, instead of the originally planned one week.