Günter Ruyters is the former Head of Germany´s Space Life Sciences Program at the German Space Administration, German Aerospace Center DLR and served as Germany´s delegate of the Human Spaceflight, Microgravity and Exploration Program Board of the European Space Agency ESA. He was also appointed professor at the Faculty of Biology, University of Bielefeld. Katrin Maria Stang is Parabolic Flight Program Manager and Coordinator for the Human Research Program at the Department of Research and Exploration at the German Space Agency, German Aerospace Center (DLR). Her responsibilities include management of experiment hardware development for the International Space Station and coordination of the utilization of ground analogues for human physiology projects. Markus Braun is Head of Germany´s Space Life Sciences Program at the German Space Agency, German Aerospace Center (DLR), and serves as Germany´s delegate of the Human Spaceflight, Microgravity and Exploration Program Board of the European Space Agency ESA. He is appointed faculty member at the University Bonn and is principal investigator and project manager of gravitational biology, physiology and bioregenerative life support projects conducted on various microgravity flight opportunities.