Astronaut Don Pettit processes samples for imaging operations

iss072e660187_alt (Feb. 26, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit processes samples for imaging operations inside the Mochii miniature electron scanning microscope. Mochii, located inside the International Space Station's Kibo laboratory module, may help crews rapidly identify particles that are hazardous to crew health and spacecraft systems without relying on time-consuming missions to return the samples to Earth for analysis.