Alexander Choukèr is Professor of Medicine and Academic Director at the Ludwig Maximilians University (LMU) in Munich, Germany and guest lecturer at King´s College, London, UK. He is clinical specialist in anesthesiology at the University Hospital where heads the “Stress and Immunity” research. He completed his medical and immunological training at the LMU and at the National Institutes of Allergy and Infectious Diseases (NIAID), Bethesda/USA, respectively. For more than two decades he has been actively involved in research on the International Space Station, in space analogue environments and been leading inter-disciplinary teams for translational and experimental research, including at the hospital. He is member of the European Space Sciences Committee (ESSC) and has been advisor or chairman at different expert boards of the European Space Agency´s (ESA). He is the chair of the ESA Topical Team on Stress and Immunology.