Why four NASA astronauts are being evacuated from the International Space Station
The International Space Station has never previously experienced a medical evacuation in the 25 years it has been inhabited by astronauts (Nasa)
Four International Space Station (ISS) crew members are preparing for an early return to Earth due to an undisclosed medical issue affecting one astronaut.
This marks the first medical evacuation from the ISS in its 25-year history of continuous habitation.
The affected astronaut's identity and specific health concern remain undisclosed, though they are reported to be in a stable condition.
The Crew-11 mission, comprising astronauts from Nasa, Roscosmos, and JAXA, will return aboard a SpaceX Dragon capsule.
The return is scheduled for Wednesday at 10.05pm UK time, with a parachute-assisted splashdown off the coast of California.