Expedition 63

Expedition 63 is the 63rd long duration mission to the International Space Station, scheduled to begin in April 2020 with the undocking of the Soyuz MS-15 spacecraft. The Expedition will consist of American commander Chris Cassidy, as well as Russian flight engineers Nikolai Tikhonov and Andrei Babkin.[1] It is currently unknown if the Expedition will only consist of three crew members, or if other crew members will be delivered onboard a US Commercial Crew vehicle.

ISS Expedition 63
Space StationInternational Space Station
Arrived aboardSoyuz MS-16
Departed aboardTBD
Crew size3+


Position Crew member
Commander Chris Cassidy, NASA
Third spaceflight
Flight Engineer 1 Nikolai Tikhonov, RKA
First spaceflight
Flight Engineer 2 Andrei Babkin, RKA
First spaceflight

Extra Vehicular Activiy

Since delays to the US Commercial Crew Program might leave Cassidy as the only crew member on the USOS for an extended period of time, Tikhonov (and his backup Anatoli Ivanishin) has carried out training on US EMU spacesuits, in the unlikely event that an unscheduled EVA has to take place before any more USOS crew members arrive on the station, if Tikhonov takes place in an EVA in the EMU he will be the first Russian cosmonaut to use an EMU since Yuri Malenchenko during Expedition 16 in 2007[2]. For the same reason, Babkin has had to train on operating the USOS Robotic Arm (Canadarm 2) in order to robotically support any spacewalk carried out by Cassidy and Tikhonov.


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