New Expedition 73 Crew Photos: Summer 2025 | International Space Station

New Expedition 73 Crew Photos: Summer 2025 | International Space Station

The seven-member Expedition 73 crew gathers for a portrait inside the International Space Station's Kibo laboratory module. In the front row from left are, Roscosmos cosmonauts Alexey Zubritsky and Sergey Ryzhikov, station Flight Engineer and Station Commander respectively of Russia, and NASA Flight Engineer Jonny Kim. In the back row are, Flight Engineers Kimiya Yui of the Japan Aerospace Exploration Agency (JAXA) Oleg Platonov of Roscosmos (Russia), and Zena Cardman and Mike Fincke, both from NASA. Ryzhikov is holding a patch commemorating his 500th day cumulative in space across three spaceflights including Expeditions 49-50, 63-64, and 72-73.

NASA astronaut and Expedition 73 Flight Engineer Mike Fincke displays the Nanoracks' Nanolab Space Liintech research hardware inside the International Space Station's cupola while orbiting 262 miles above a cloudy United States. Nanolab Space LiinTech tests a platform that uses optical technology to monitor the process of producing protein crystals in microgravity. This investigation could lead to the development of technology for crystallizing proteins in microgravity to produce pharmaceuticals for use in space and Earth.

NASA astronaut and Expedition 73 Flight Engineer Jonny Kim processes bone cell samples inside the Kibo laboratory module's Life Science Glovebox. He was exploring the molecular mechanisms of space-induced bone loss for an investigation that could help the human skeletal system adapt to spaceflight and lead to advanced treatments for aging conditions and bone diseases on Earth.

NASA astronaut and Expedition 73 Flight Engineer Zena Cardman processes bone cell samples inside the Kibo laboratory module's Life Science Glovebox. She was exploring the molecular mechanisms of space-induced bone loss for an investigation that could help the human skeletal system adapt to spaceflight and lead to advanced treatments for aging conditions and bone diseases on Earth.

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
Capture Date: Aug. 28, 2025

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