Astronaut Jessica Meir conducts a biotechnology investigation

iss074e0573327 (May 7, 2026) --- NASA astronaut and Expedition 74 flight engineer Jessica Meir works inside the International Space Station's Harmony module conducting a biotechnology investigation to observe how tiny, engineered materials that mimic DNA behave in microgravity. Meir pointed a light-measuring device, called a spectrophotometer, at the DNA-like sample materials housed in small transparent containers to analyze their ability to form stable structures. Doctors on Earth will use the research data to learn how to improve and develop future treatments, or nano-therapies, that target cancer cells more precisely.