Soyuz MS-08
Soyuz MS-08 spacecraft in the integration facility (3).jpg
Soyuz MS-08 spacecraft
COSPAR ID2018-026A
SATCAT no.43238
Mission duration196d 18h 1m
Spacecraft properties
Spacecraft typeSoyuz-MS 11F747
ManufacturerRKK Energia
Launch mass7,220
Crew size3
MembersOleg Artemyev
Andrew J. Feustel
Richard R. Arnold[1]
Start of mission
Launch date21 March 2018, 17:44 UTC[2]
Launch siteBaikonur Pad 1/5
End of mission
Landing date4 October 2018, 11:45 UTC
Landing siteKazakhstan
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Docking with ISS
Docking portPoisk zenith
Docking date23 March 2018, 20:40 UTC[3]
Undocking date4 October 2018, 07:57 UTC
Time docked194d 11h 17m
Soyuz MS-08 crew members in front of their spacecraft.jpg

(l-r) Arnold, Artemyev and Feustel
Soyuz programme
(Crewed missions)

Soyuz MS-08 was a Soyuz spaceflight that launched on 21 March 2018.[3] It transported three members of the Expedition 55 crew to the International Space Station.[3] MS-08 was the 137th flight of a Soyuz spacecraft. The crew consisted of a Russian commander, and two American flight engineers.

MS-08 returned its crew to Earth on 4 October 2018.[4]


Position Crew member
Commander Russia Oleg Artemyev, RSA
Expedition 55
Second spaceflight
Flight Engineer 1 United States Andrew J. Feustel, NASA
Expedition 55
Third spaceflight
Flight Engineer 2 United States Richard R. Arnold, NASA
Expedition 55
Second and last spaceflight


Backup crew


Position Crew member
Commander Russia Aleksey Ovchinin, RSA
Flight Engineer 1 United States Nick Hague, NASA


  1. ^ a b "NASA Announces Upcoming International Space Station Crew Assignments". NASA. 28 March 2017. Retrieved 1 April 2017.
  2. ^ "Soyuz MS-08 mission, first crew launch of 2018, docks with ISS". 21 March 2018.
  3. ^ a b c Soyuz MS-08 mission, first crew launch of 2018, docks with ISS
  4. ^ "Soyuz MS-08 returns station crew to Earth after 197 days in space". collectspace.
  5. ^ Next Soyuz squads
  6. ^ "Экипаж "Союза МС-08" начал тренировки на Байконуре". 5 March 2018.