ISS EXPEDITION 73/74 CHANGE OF COMMAND CEREMONY, Dec 7, 2025, Earth orbit, 10:30 am ET

International Space Station Expedition 73 will end and Expedition 74 will begin when the Soyuz MS-27 spacecraft with its three-person crew (including NASA’s Jonny Kim) undocks from the ISS on December 8, 2025 at 8:41 am ET.

On December 7 at 10:30 am ET, a Change-of-Command ceremony will take place on the ISS with NASA astronaut Mike Fincke assuming command from Roscosmos cosmonaut Sergey Rzyhikov.  NASA will provide live coverage on  NASA+, Amazon Prime, and the agency’s YouTube channel.

See our separate entry for the schedule of Soyuz MS-27’s undocking and return to Earth.