ESA astronaut Alexander Gerst works with NASA crew mate and commander of the International Space Station on an experiment from DLR that uses an innovative 3D fluorescence microscope to observe cell changes in real time. This experiment provides a whole new insight into human tissue, cell cultures, microorganisms and plants in space.
Alexander will take over as commander of the International Space Station for the second half of his Horizons mission when Drew returns to Earth, 3 October 2018.