Medical evacuation: When NASAs Crew-11 astronauts leave ISS, splashdown livestream info

NASA will undock a SpaceX Dragon capsule from the International Space Station and bring four astronauts home Thursday morning after a medical problem prompted an early return.

The move is surprising because it marks the first medical evacuation from the station in its 25 years of continuous use, highlighting the limits of health care in space. The agency will not disclose which astronaut is unwell, citing privacy reasons. 

NASA plans for Crew-11 to depart the station at about 2 p.m.