Horizons: Preparations to liftoff

Highlights of the preparations and liftoff for the Horizons mission with ESA astronaut Alexander Gerst.

At 11:12 GMT (13:12 CEST) on 6 June 2018, Alexander was launched into space alongside NASA astronaut Serena Auñón-Chancellor and Roscosmos commander Sergei Prokopyev in the Soyuz MS-09 spacecraft from Baikonur cosmodrome in Kazakhstan.