Serena Auñón-Chancellor is a NASA astronaut and associate professor of clinical medicine at the Louisiana State University Health Sciences Center. Board certified in internal and aerospace medicine, she was a flight engineer for NASA’s 2018 expedition to the International Space Station, spending 197 days in space and contributing to experiments in biology, biotechnology, physical science, and Earth sciences. Prior to her selection to the astronaut corps in 2009, Auñón-Chancellor spent three years as a NASA flight surgeon. She is also associate program director for the Aerospace Medicine Residency Program at University of Texas Medical Branch. Her research interests include spaceflight-associated health outcomes, space radiation clinical outcomes, and thrombosis in the microgravity environment.