Expedition 73 Crew Photos: August 2025 | International Space Station

Expedition 73 Crew Photos: August 2025 | International Space Station

NASA astronaut and Expedition 73 Flight Engineer Zena Cardman works inside a portable glovebag aboard the International Space Station's Harmony module. Cardman was installing experiment modules containing liver tissue into an artificial gravity generator for a biotechnology investigation exploring how bioprinted, or engineered, liver tissues containing blood vessels behave in microgravity. Results may improve long term health for astronauts and improve quality of life for patients on Earth.

NASA astronaut and Expedition 73 Flight Engineer Mike Fincke is pictured during communications maintenance activities aboard the International Space Station's Destiny laboratory module.

Roscosmos cosmonaut and Expedition 73 Commander Sergey Ryzhikov of Russia is pictured during electronics maintenance at the beginning of his shift aboard the International Space Station.

Roscosmos cosmonaut and Expedition 73 Flight Engineer Alexey Zubritsky of Russia is pictured with an air sampling device to detect and analyze trace contaminants such as carbon dioxide and ammonia to ensure a safe breathable environment aboard the International Space Station.

Roscosmos cosmonaut and Expedition 73 Flight Engineer Oleg Platonov of Russia is pictured with an air sampling device to detect and analyze trace contaminants such as carbon dioxide and ammonia to ensure a safe breathable environment aboard the International Space Station.

Expedition 73 Flight Engineers Jonny Kim and Zena Cardman, both NASA astronauts, work together inside the International Space Station's Destiny laboratory module on science maintenance activities.

Japan Aerospace Exploration Agency (JAXA) astronaut and Expedition 73 Flight Engineer Kimiya Yui checks out a Global Positioning Satellite receiver during maintenance aboard the International Space Station's Destiny laboratory module.

Expedition 73 Flight Engineers (clockwise from top) Zena Cardman, Jonny Kim, and Mike Fincke, all three NASA astronauts, and Kimita Yui from the Japan Aerospace Exploration Agency (JAXA) gather together inside the Kibo laboratory module prior to a conference with officials on the ground.

Update: Looking ahead to the next cargo resupply mission, NASA, Northrop Grumman, and SpaceX are targeting no earlier than 5:49 p.m. EDT Monday, Sept. 15, 2025, for the launch of the next commercial resupply services mission to the International Space Station. The Northrop Grumman Cygnus spacecraft will launch on a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral in Florida, delivering science and supplies to the orbital complex.

Follow Expedition 73:
https://blogs.nasa.gov/spacestation/

Expedition 73 Crew

Station Commander: Sergey Ryzhikov (Roscosmos)

JAXA Flight Engineer (Japan): Kimiya Yui

Roscosmos (Russia) Flight Engineers: Alexey Zubritskiy, Oleg Platonov

NASA Flight Engineers: Jonny Kim, Zena Cardman, Mike Fincke

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Learn more about the important research being operated on Station:
https://www.nasa.gov/iss-science

For more information about STEM on Station:

https://www.nasa.gov/stemonstation
Science, Technology, Engineering, Math (STEM)

Image Credit: NASA's Johnson Space Center
Image Dates: Aug. 19-27, 2025

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