(Corrects day of the week in top paragraph)
LOS ANGELES, Jan 15 (Reuters) - A SpaceX capsule carrying a four-member crew home from orbit in an emergency return to earth necessitated by an undisclosed serious medical condition afflicting one of the astronauts splashed down safely early on Thursday in the Pacific Ocean off California.
The Crew Dragon capsule parachuted into calm seas off San Diego at about 12:45 a.m. PST (0845 GMT), capping a 10-hour-plus descent from the International Space Station and fiery re-entry through Earth's atmosphere, carried live by a joint NASA-SpaceX webcast.
(Reporting by Steve Gorman in Los Angeles; Editing by Aidan Lewis)