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 this morning in the Pacific Ocean off California.
The Crew Dragon capsule dubbed Endeavour parachuted into calm seas off San Diego at about 12.45am local time (8.45am Irish time), capping a 10-hour-plus descent from the International Space Station and fiery re-entry through Earth's atmosphere.
Their return a few weeks ahead of schedule marked the first time that NASA has cut short the mission of an ISS crew due to a health emergency.
Live infrared video presented in a joint NASA-SpaceX webcast showed deployment of the two sets of parachutes from the nose of the free-falling capsule, slowing its rate of descent to about 25 kmh before it gently hit the water.
Moments later, several dolphins were visible swimming near the capsule, their dorsal fins breaking the surface of the ocean, as the spacecraft bobbed gently upright in the water.
In a radio transmission to the SpaceX flight-control center near Los Angeles, Endeavour's commander, NASA astronaut Zena Cardman, 38, was heard saying, "It's good to be home".
Joining her on the flight home were fellow US astronaut Mike Fincke, 58, Japanese astronaut Kimiya Yui, 55, and Russian cosmonaut Oleg Platonov, 39.
They arrived together at the space station following a launch to orbit from Florida in August, and departed yesterday afternoon on a 10-and-a-half-hour flight home, ending a 167-day mission.
The decision to bring all four members of Crew-11 home early was announced 8 January, with NASA Administrator Jared Isaacman saying one of the astronauts faced a "serious medical condition" that required immediate medical attention on the ground.
NASA officials have not identified which of the four crew members was experiencing a medical issue or described its nature, citing privacy concerns.
Mr Fincke, a retired Air Force colonel who was the station's designated commander, and Ms Cardman, a rookie astronaut and geobiologist, had been scheduled to conduct a six-hour-plus spacewalk last week to install hardware outside the station.
The spacewalk was canceled on 7 January over what NASA then characterized as a "medical concern" with an astronaut.
NASA Chief Health and Medical Officer James Polk later said the medical emergency did not involve "an injury that occurred in the pursuit of operations".
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