Expedition#73 Crew Photos: May 2025 | International Space Station

Expedition#73 Crew Photos: May 2025 | International Space Station

NASA astronaut and Expedition 73 Flight Engineer Nichole Ayers swaps sample cartridges inside the Material Science Laboratory (MSL) that supports high temperature space physics research using furnaces aboard the International Space Station's Destiny laboratory module. The properties of many types of materials such as metals, alloys, polymers, semiconductors, ceramics, crystals, and glasses, can be studied in the MSL to discover new applications for existing materials and new or improved materials.

NASA astronaut and Expedition 73 Flight Engineer Jonny Kim swaps hardware that promotes physical science and crystallization research inside the Advanced Space Experiment Processor-4 (ADSEP-4) aboard the International Space Station. The ADSEP-4 is supporting a technology demonstration potentially enabling the synthesis of medications during deep space missions and improving the pharmaceutical industry on Earth.

(From top) Expedition 73 Flight Engineers Nichole Ayers and Anne McClain, both NASA astronauts, pose for a portrait while verifying the functionality and replacing hardware on the Exploration Potable Water Dispenser (xPWD). The xPWD is located in the International Space Station's Destiny laboratory module and is demonstrating advanced water sanitization methods, microbial growth reduction, and a heater to dispense hot water for use aboard the orbital outpost and future spacecraft.

(From left) Expedition 73 Flight Engineers Anne McClain and Nichole Ayers, both NASA astronauts, take a break and pose for a portrait aboard the International Space Station Destiny laboratory module.

NASA astronaut Nichole Ayers and Japan Aerospace Exploration Agency (JAXA) astronaut Takuya Onishi, Expedition 73 flight engineer and commander respectively, are pictured together inside the International Space Station's Kibo laboratory module. The astronauts called down to students at Long Beach Middle School in Lido Beach, New York, and answered their questions about living in space.

NASA astronaut and Expedition 73 Flight Engineer Jonny Kim wears goggles while working on computer network maintenance aboard the International Space Station's Harmony module.

Japan Aerospace Exploration Agency (JAXA) astronaut and Expedition 73 Commander Takuya Onishi services hardware that promotes physical science and crystalization research inside the Advanced Space Experiment Processor-4 (ADSEP-4) aboard the International Space Station. The ADSEP-4 is supporting a technology demonstration potentially enabling the synthesis of medications during deep space missions and improving the pharmaceutical industry on Earth.

NASA astronaut and Expedition 73 Flight Engineer Jonny Kim photographs genetically modified, extemely dwarf tomato plants growing inside specialized research hardware, called Rhodium BioCuvettes, aboard the International Space Station's Destiny laboratory module. The space botany experiment tests the plants ability to grow without photosynthesis and survive in confined environments in weightlessness potentially supporting crop production on spacecraft.

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

Expedition 73 Crew

Station Commander: Japan Aerospace Exploration Agency (JAXA) Flight Engineer Takuya Onishi
Roscosmos (Russia) Flight Engineers: Kirill Peskov, Sergey Ryzhikov, Alexey Zubritskiy

NASA Flight Engineers: Anne McClain, Nichole Ayers, Jonny Kim

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: May 11-20, 2025

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