Expedition 51

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ISS Expedition 51
Expedition 51 Press Conference (NHQ201704190009).jpg
Expedition 51 prime crew members, Flight Engineer Jack Fischer of NASA, left, and Soyuz Commander Fyodor Yurchikhin of Roscosmos, second from left, pose for a photo with Expedition 51 back up crew members, Soyuz Commander Sergey Ryazanskiy of Roscosmos, second from right, and Flight Engineer Randy Bresnik of NASA, right, at the conclusion of the press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Wednesday, April 19, 2017
Mission type ISS Expedition
Space Station International Space Station
Began 10 April 2017 UTC
Ended 2 June 2017 UTC
Arrived aboard Soyuz MS-03
Soyuz MS-04
Departed aboard Soyuz MS-03
Soyuz MS-04
Crew size 5
Members Expedition 50/51:
Oleg Novitskiy
Peggy Whitson
Thomas Pesquet
Expedition 51/52:
Fyodor Yurchikhin
Jack Fischer
EVAs 2

ISS Expedition 51 Patch.svg

Expedition 51 crew portrait.jpg
(l-r) Fischer, Yurchikhin, Pesquet, Whitson, Novitskiy

Expedition 51 was the 51st expedition to the International Space Station, which began upon the departure of Soyuz MS-02 on April 10, 2017 and concluded upon the departure of Soyuz MS-03 on June 2, 2017. Peggy Whitson, Oleg Novitskiy and Thomas Pesquet were transferred from Expedition 50, with Peggy Whitson taking the commander role. She is the first woman to command two expeditions to the ISS, having previously commanded Expedition 16.[1]

Due to a decision to cut down the number of participating Russian cosmonauts in 2017, only two cosmonauts were launched on Soyuz MS-04 on April 20, 2017 - bringing the total crew number to five.[2] Transfer of Command from Expedition 51 to Expedition 52 was done on June 1, 2017. Expedition 51 officially ended on June 2, 2017 10:47 UTC, with the undocking of Soyuz MS-03.[3]


Position First Part
(April 2017)
Second Part
(April 2017 to June 2017)
Commander United States Peggy Whitson, NASA
Third spaceflight[4]
Flight Engineer 1 Russia Oleg Novitskiy, RSA
Second spaceflight
Flight Engineer 2 France Thomas Pesquet, ESA
First spaceflight
Flight Engineer 3 Russia Fyodor Yurchikhin, RSA
Fifth spaceflight
Flight Engineer 4 United States Jack Fischer, NASA
First spaceflight

Mission overview[edit]

Expedition 50/51 launch and docking[edit]

Soyuz MS-03 launched on November 17, 2016, transporting Oleg Novitskiy, Peggy Whitson and Thomas Pesquet.[5] MS-03 docked with the Rassvet module on November 19, 2016.


EVA # Spacewalkers Start (UTC) End (UTC) Duration
Expedition 51
United States Peggy Whitson
United States Jack D. Fischer
May 12, 2017
May 12, 2017
4 hours 13 minutes
Replaced ExPRESS Carrier Avionics (ExPCA), Installed Pressurized Mating Adapter-3 (PMA-3) Forward Shield, Installed Alpha Magnetic Spectrometer (AMS) MIL-1553 Terminator, Secured Multilayer Insulation (MLI) on Japanese Manipulator System, Relocated a Portable Foot Restrain to PMA-3[6]
EVA 2 United States Peggy Whitson
United States Jack D. Fischer
May 23, 2017
May 23, 2017
2 hours 46 minutes
Replace failed Multiplexer-Demultiplexer (MDM), Installed two Wireless Communication Anntenna's[7]

Unmanned spaceflights to the ISS[edit]

Resupply missions that visited the International Space Station during Expedition 51:

- ISS flight number
Country Mission Launcher Launch
Duration (Docked) Deorbit
Cygnus CRS OA-7
- CRS OA-7
 United States Logistics Atlas V 401 18 Apr 2017, 15:11:26 22 Apr 2017, 10:16 4 Jun 2017, 11:05 43d 49m 11 Jun 2017


  1. ^ Chiara Palazzo Associated Press. "Nasa veteran Peggy Whitson becomes the oldest woman in space as she blasts off for ISS". Telegraph.co.uk. Retrieved 2016-11-19. 
  2. ^ Irene Klotz (16 November 2016). "NASA, Russia Set Flights for Trimmed-Down Space Station Crew". space.com. Retrieved 21 November 2016. 
  3. ^ Garcia, Mark (1 June 2017). "Station Changes Command Before Friday Crew Return". NASA. Retrieved 18 June 2017. 
  4. ^ "NASA, Space Station Partners Announce Crew Members for Missions in 2017". NASA. 6 August 2015. Retrieved 16 February 2016. 
  5. ^ http://russianspaceweb.com/soyuz-ms-03.html
  6. ^ Garcia, Mark (2017-05-12). "200th Station Spacewalk Comes to an End". NASA.gov. Retrieved 2017-05-12. 
  7. ^ Garcia, Mark (2017-05-23). "Short Spacewalk Complete After Successful Installation Work". NASA.gov. Retrieved 2017-05-23.