# Expedition 50

Expedition 50 was the 50th expedition to the International Space Station.
Robert S. Kimbrough, Andrei Borisenko and Sergey Ryzhikov transferred from Expedition 49. Expedition 50 began upon the departure of Soyuz MS-01 on October 28, 2016 and was concluded upon the departure of Soyuz MS-02 on April 10, 2017. The crew of Soyuz MS-03 were transferred to Expedition 51.
After the launch of Soyuz MS-03, Peggy Whitson, at age 56, became the oldest woman to fly into space. By taking command of Expedition 51 on April 10, 2017, she also became the first woman to command two ISS expeditions (after Expedition 16 in 2007–2008). Soyuz MS-03 docked at the International Space Station on November 19, 2016, bringing the total number of people in the station to 6.

## Crew

| Position | First Part (October to November 2016) | Second Part (November 2016 to April 2017) |
| Commander | Robert S. Kimbrough, NASA Second spaceflight | Robert S. Kimbrough, NASA Second spaceflight |
| Flight Engineer 1 | Sergey Ryzhikov, RSA First spaceflight | Sergey Ryzhikov, RSA First spaceflight |
| Flight Engineer 2 | Andrei Borisenko, RSA Second and last spaceflight | Andrei Borisenko, RSA Second and last spaceflight |
| Flight Engineer 3 | | Peggy Whitson, NASA Third (last NASA) spaceflight |
| Flight Engineer 4 | | Oleg Novitsky, RSA Second spaceflight |
| Flight Engineer 5 | | Thomas Pesquet, ESA First spaceflight |

## Mission overview
### Expedition 49/50 launch and docking

Soyuz MS-02 launched on October 19, 2016, transporting Robert S. Kimbrough, Andrei Borisenko and Sergey Ryzhikov, who would make up the Expedition 49/50 crew. MS-02 docked with the (Poisk (MRM-2) module on October 21, 2016.

### Expedition 50/51 launch and docking

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

### Activities

On 25 December 2016 the crew celebrated Christmas by floating in micro-gravity and opening Christmas presents recently delivered on a Japanese cargo spacecraft. One astronaut wore a Santa hat in orbit. The French astronaut Pesquet shared special French food with the station crew. Pesquet also made a Christmas-time special video for the ESA.

### Science activities
## Uncrewed spaceflights to the ISS

A number of resupply missions visited the International Space Station during Expedition 50.
| Spacecraft - ISS flight number | Country | Mission | Launcher | Launch (UTC) | Docked/Berthed (UTC) | Undocked/Unberthed (UTC) | Duration (Docked) | Deorbit |
| Cygnus CRS OA-5 - CRS OA-5 | United States | Logistics | Antares 230 | 17 Oct 2016, 23:45:40 | 23 Oct 2016, 11:28 | 21 Nov 2016, 12:35 | 29d 1h 7m | 27 Nov 2016, 23:36 |
| Progress MS-04 - ISS-65P | Russia | Logistics | Soyuz-U | 1 Dec 2016, 14:51:45 | Spacecraft separated from third stage before reaching orbit; loss of mission | Spacecraft separated from third stage before reaching orbit; loss of mission | Spacecraft separated from third stage before reaching orbit; loss of mission | Spacecraft separated from third stage before reaching orbit; loss of mission |
| Kounotori 6 - HTV-6 | Japan | Logistics | H-IIB | 9 Dec 2016, 13:26:47 | 13 Dec 2016, 10:37 | 27 Jan 2017 15:45 | 45d 5h 8m | 5 February 2017, 15:06 |
| SpaceX CRS-10 - CRS SpX-10 | United States | Logistics | Falcon 9 | 19 February 2017, 14:39:00 | 23 February 2017, 13:12 | 19 March 2017, 09:11 | 23d 19h 54m | 19 March 2017, 14:00 |
| Progress MS-05 - ISS-66P | Russia | Logistics | Soyuz-U | 22 February 2017 05:58:33 | 24 February 2017, 08:34 | 20 Jul 2017, 17:46 | 146d 9h 16m | 20 Jul 2017, 20:58 |

## Spacewalks

| EVA # | Spacewalkers | Start (UTC) | End (UTC) | Duration |
| EVA 1 | Peggy Whitson Shane Kimbrough | January 6, 2017 11:23 | January 6, 2017 17:55 | 6 hours 32 minutes |
| Installed adapter plates and cables for new batteries on 3A power channel, pictures of AMS, removal of camera and routing of Ethernet cable. ||||
| EVA 2 | Shane Kimbrough Thomas Pesquet | January 13, 2017 11:22 | January 13, 2017 17:20 | 5 hours 58 minutes |
| Primary objectives: Retrieve Adapter Plate E and F from the Express Pallet (EP), Install Adapter Plate F in Slot 6, Relocate Battery 4 to Adapter Plate F, Install Adapter Plate E in Slot 4, Retrieve and Install Adapter Plate D in Slot 2, Fasten H1 Bolts on Li-Ion Batteries in Slots 1 and 5. Get-ahead tasks:Node 3 Shields Bundle #3 Temp Stow, Mobile Transporter Relay Assembly (MTRA) Camera Light Pan and Tilt Assembly (CLPA) Swap, Latching End Effector (LEE) A Worksite Interface Fixture (WIF) Adapter R&R, S0 aft to Z1 forward (Rat's Nest) Photo Mapping, Secure Solar Array Blanket Boxes (SABB) Restraints, Relocate Shields Bundle #2 to Node 3. ||||
| EVA 3 | Shane Kimbrough Thomas Pesquet | March 24, 2017 11:24 | March 24, 2017 17:58 | 6 hours 34 minutes |
| Prepare PMA for move, EXT-2 MDM removal & replace with new EPIC MDM, Camera Work, Lubricated Canadarm2 end effector and inspected a radiator value. ||||
| EVA 4 | Shane Kimbrough Peggy Whitson | March 30, 2017 12:29 | March 30, 2017 19:33 | 7 hours 4 minutes |
| EXT-1 MDM removal & replace with new EPIC MDM, Node 3 axial shields install including replacing a lost shield with the PMA-3 cover, PMA-3 cummerbunds install, PMA-3 cover removal, PMA-3 connections, close Node 3 port CDC, Inspection & cleaning of the Earth-facing berthing port of the Harmony module. ||||