The four Crew-11 astronauts have safely landed near California after one of them experienced a health issue in space that forced a medical evacuation.

A Crew-11 member, who NASA has yet to identify, had an undisclosed medical concern that triggered the agency to accelerate their return to Earth.

NASA leaders said the Crew-11 mission's astronaut medical evacuation shows how the agency is prepared to handle the unexpected.

NASA has praised its operators and procedures following the safe recovery of the SpaceX Crew-11 astronauts, who returned home from the International Space Station several weeks ahead of schedule due to an ongoing medical situation with one of the astronauts.

In an unprecedented move, NASA is bringing an astronaut crew home early from the International Space Station because one astronaut has an undisclosed medical condition.