Sergei Valeriyevich Prokopyev, born 19 February 1975 is a Russian cosmonaut. He is the commander of Soyuz MS-09, and flight engineer of Expedition 56/57 to the International space station.
Soyuz MS-09 begins expedition 56 by carrying Roscosmos cosmonaut Sergey Prokopyev, ESA astronaut Alexander Gerst and NASA astronaut Serena Auñón-Chancellor to the International Space Station. After launching from the Baikonur Cosmodrome in Kazakhstan, they will rendezvous to the station where they will remain for their 6 month stay.Low Earth Orbit #SoyuzMS09
The Roscosmos State Corporation for Space Activities, commonly known as Roscosmos, is the governmental body responsible for the space science program of the Russian Federation and general aerospace research. Soyuz has many launch locations the Russian sites are Baikonur, Plesetsk and Vostochny however Ariane also purchases the vehicle and launches it from French Guiana.