Expedition 73 is the 73rd long-duration expedition to the International Space Station (ISS). The expedition began with the departure of Soyuz MS-26 on 19 April 2025 with JAXA astronaut Takuya Onishi taking over the ISS command.[1] 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 has seen one spacewalk so far. On May 1, 2025, McClain and Ayers performed a 5-hour, 44-minute EVA to install a modification kit on the port side of the station’s truss structure enabling the future installation of its seventh iROSA and relocated an antenna that communicates with approaching and departing commercial crew and cargo spacecraft.
SpaceX Crew-11 arrived at the ISS on August 2, transporting NASA astronauts Zena Cardman and Michael Fincke, JAXA astronaut Kimiya Yui, and Roscosmos cosmonaut Oleg Platonov. The mission featured a handover with Crew-10 of six days. Onishi handed over command of the space station to Ryzhikov on August 5. Crew-10 departed with McClain, Ayers, Onishi, and Peskov on August 8.
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.
References
↑ "大西卓哉宇宙飛行士のISS船長（ISSコマンダー）就任決定"[Astronaut Takuya Onishi appointed as ISS Commander]. JAXA (in Japanese). 2 December 2024. Retrieved 24 December 2024. [We are pleased to announce that Takuya Onishi, an astronaut from the Japan Aerospace Exploration Agency (JAXA), has been selected as the ISS commander for the International Space Station (ISS) Expedition 73. Astronaut Onishi will be the third Japanese ISS commander and will lead the ISS during the Expedition 73 mission.]
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