A NASA astronaut is leaving the space agency after a medical emergency occurred during a mission. The incident happened aboard the International Space Station and resulted in an early end to the journey for the astronaut and three crewmates. The astronaut, Mike Fincke, has been with NASA since 1996.

His last day at the agency is Wednesday, according to a news release. Further details about Fincke's departure and future plans are available from the source, including a statement from the astronaut expressing his commitment to exploration and gratitude to those involved in his work.