iss074e0518242 (April 23, 2026) --- NASA astronaut and Expedition 74 flight engineer Jessica Meir processes samples of heart stem cells and bacteria that cause pneumonia using a portable glovebag inside the International Space Station's Harmony module. Research in microgravity may give doctors a clearer understanding of how infectious disease processes damage heart tissue at the cellular and molecular level. These insights could lead to advanced treatments for heart conditions both on Earth and in space. Credit: NASA/Chris Williams
Album Expedition_74
Date April 23, 2026