Horizons: Knowledge for Tomorrow (Expeditions 56/57) June–December 2018
Gerst was back in space to broaden horizons in science and space exploration during his second mission. Expedition 56 saw him serve as flight engineer on the ISS. He took over as commander for Expedition 57, making him the first German to take command of the ISS. Roscosmos cosmonaut Sergey Prokopyev, NASA astronaut Serena Auñón-Chancellor and Alexander Gerst took off in a Soyuz MS-09 on 6th June 2018 from Baikonur, Kazakhstan. They arrived on the ISS on 8th June and spent the next six months working aboard the orbiting laboratory, conducting 65 scientific experiments and even controlling a robot on Earth from outer space! The trio circled our planet 3,152 times and travelled about 134 million kilometers over their 197-day mission.