Expedition 52
| Promotional Poster | |
| Mission type | Long-duration expedition | 
|---|---|
| Expedition | |
| Space station | International Space Station | 
| Began | 2 June 2017 UTC | 
| Ended | 2 September 2017 UTC | 
| Arrived aboard | Soyuz MS-03 Soyuz MS-04 Soyuz MS-05 | 
| Departed aboard | Soyuz MS-04 Soyuz MS-05 | 
| Crew | |
| Crew size | 6 | 
| Members | Expeditions 50/51/52: Peggy A. Whitson Expeditions 51/52: Fyodor Yurchikhin Jack D. Fischer Expeditions 52/53: Sergey Ryazansky Randolph J. Bresnik Paolo Nespoli | 
| Expedition 52 mission patch (l-r) Fischer, Yurchikhin, Whitson, Nespoli, Bresnik, Ryazanskiy | |
Expedition 52 (June – September 2017) was the 52nd expedition to the International Space Station. It officially began on June 2, 2017 10:47 UTC, with the undocking of Soyuz MS-03. Transfer of command from Expedition 51 was done on June 1, 2017.
Due to a decision to cut down the number of participating Russian cosmonauts in 2017, only two crew members were launched on Soyuz MS-04, which brought the ISS total crew down to five people. However, it was later decided that Peggy Whitson would stay on board longer, transferring from Expedition 51 to maintain a full crew of six astronauts over the summer, after the arrival of three new members on Soyuz MS-05. Expedition 51 officially ended on September 2, 2017 11:47 UTC, with the undocking of Soyuz MS-04.