NASA astronaut Mike Fincke performs research operations for the BioNugtrients-2 investigation

iss073e0865425 (Oct. 7, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Mike Fincke performs research operations for the BioNugtrients-2 investigation at the maintenance work area inside the International Space Station's Harmony module. The biotechnology investigation seeks to produce on-demand vitamins and nutrients using bioengineered yeast and bacteria to maintain crew health during long-term space missions farther away from Earth.