Expedition 74 is the 74th long-duration expedition to the International Space Station (ISS). The expedition began with the departure of Soyuz MS-27 on 9 December 2025 with NASA astronaut Michael Fincke taking over the ISS command and is expected to conclude with the undocking of Soyuz MS-28 on 26 July 2026. It continues the extensive scientific research conducted aboard the ISS, focusing on various fields, including biology, human physiology, physics, and materials science. The crew members also maintain and upgrade the space station systems.
The expedition is expected to see two spacewalks. On the first spacewalk, Cardman and Fincke were planned to prepare the 2A power channel for future installation of the iROSA that will provide additional power.[citation needed] However, the spacewalk was cancelled just hours before it was scheduled to begin due to a crewmember "medical situation".[2] On 15 January 2026, two crewmembers were planned to replace a high-definition camera, install a new navigational aid for visiting spacecraft on the Harmony module’s forward port, and relocate an early ammonia servicer jumper, a flexible hose assembly that connects parts of a fluid system, along with other jumpers on the station’s S6 and S4 truss.[citation needed]
Events manifest
Events involving crewed spacecraft are listed in bold.
The Prichal aft, forward, starboard, and aft ports all have yet to be used since the module originally docked to the station and are not included in the table.
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