ESA astronaut Alexander Gerst at re:publica conference 2015
European Space Agency
CC BY-SA 3.0 igo
<a rel="nofollow" class="external text" href="https://www.esa.int/ESA_Multimedia/Images/2015/05/ESA_astronaut_Alexander_Gerst_at_re_publica_conference_2015">ESA astronaut Alexander Gerst at re:publica conference 2015</a>