NASA astronaut Chris Williams shows off biology research hardware

iss074e0422664 (March 30, 2026) --- NASA astronaut and Expedition 74 flight engineer Chris Williams shows off biology research hardware inside the International Space Station's Kibo laboratory module. The scientific gear supports an investigation that explores using a bioregenerative life-support resource to produce oxygen, regenerate air and water, and provide nutritional supplements on spacecraft during long-term missions farther away from Earth. Credit: NASA/Jack Hathaway