Soyuz MS-08
| Soyuz MS-08 spacecraft | |
| Operator | Roscosmos | 
|---|---|
| COSPAR ID | 2018-026A | 
| SATCAT no. | 43238 | 
| Mission duration | 196d 18h 1m | 
| Spacecraft properties | |
| Spacecraft type | Soyuz-MS 11F747 | 
| Manufacturer | Energia | 
| Launch mass | 7,220 | 
| Crew | |
| Crew size | 3 | 
| Members | Oleg Artemyev Andrew J. Feustel Richard R. Arnold | 
| Callsign | Hawaii | 
| Start of mission | |
| Launch date | 21 March 2018, 17:44 UTC | 
| Rocket | Soyuz-FG | 
| Launch site | Baikonur Pad 1/5 | 
| Contractor | RKTs Progress | 
| End of mission | |
| Landing date | 4 October 2018, 11:45 UTC | 
| Landing site | Kazakhstan | 
| Orbital parameters | |
| Reference system | Geocentric | 
| Regime | Low Earth | 
| Docking with ISS | |
| Docking port | Poisk zenith | 
| Docking date | 23 March 2018, 20:40 UTC | 
| Undocking date | 4 October 2018, 07:57 UTC | 
| Time docked | 194d 11h 17m | 
| (l-r) Arnold, Artemyev and Feustel | |
Soyuz MS-08 was a Soyuz spaceflight that launched on 21 March 2018. It transported three members of the Expedition 55 crew to the International Space Station. 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.