NASA’s first medical evacuation from space went smoothly with the four members of SpaceX Crew-11 splashing down in the Pacific Ocean off the California coast early Thursday after an overnight departure from the International Space Station.

The Crew-11 mission, which launched in Florida, is returning to Earth early due to a medical issue with one of the astronauts.

Four astronauts returned safely to Earth early on Thursday after an undisclosed serious medical condition affecting one of them forced an end to their International Space Station mission a few weeks early.