Soyuz MS-08 was a Roscosmos crew transport mission to the International Space Station. It launched from Baikonur Site 1/5 on March 21, 2018 UTC with commander Oleg Artemyev and NASA flight engineers Andrew Feustel and Richard Arnold, docked two days later, and supported Expeditions 55 and 56. The same crew undocked and landed southeast of Zhezkazgan on October 4 after about 197 days in space.