India, Jan. 16 -- The four-member crew aboard the International Space Station has returned to earth on a historic medical evacuation Thursday, a month earlier than planned after one of them experienced a "serious medical condition."

NASA's SpaceX Crew-11 mission safely splashed down early Thursday morning in the Pacific Ocean off the coast of San Diego, concluding a more than five-month mission aboard the International Space Station.

U.S astronauts Zena Cardman and Mike Fincke, Japanese astronaut Kimiya Yui and Russian cosmonaut Oleg Platonov returned to Earth at 12:41 a.m. PST. Teams aboard SpaceX recovery vessels retrieved the spacecraft and its crew shortly after landing, NASA said in a press release.

Following the planned overnight h...