Alexander Gerst on the ISSTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video04/17/2018April 17, 2018Gerst, the first German commander of the ISS, talks to DW ahead of his second trip to the International Space Station, where he will be joined by US astronaut Serena Auñón-Chancellor and Russian cosmonaut Sergej Prokopyevhttps://p.dw.com/p/2wAkiAdvertisement