nhq201704100032 (April 10, 2017) --- Russian cosmonaut Andrey Borisenko of Roscosmos rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Sergey Ryzhikov of Roscosmos landed in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 28 Commander Andrey Borisenko waves hello to the TV cameras outside the Soyuz TMA-21 Capsule just minutes after he and Expedition 28 Flight Engineers Alexander Samokutyaev, and Ron Garan landed in a remote area outside the town of Zhezkazgan, Kazakhstan, on Friday, Sept. 16, 2011. NASA Astronaut Garan, Russian Cosmonauts Borisenko and Samokutyaev are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 28 Commander Andrey Borisenko gives a thumbs up outside the Soyuz TMA-21 Capsule just minutes after he and Expedition 28 Flight Engineers Alexander Samokutyaev, and Ron Garan landed in a remote area outside the town of Zhezkazgan, Kazakhstan, on Friday, Sept. 16, 2011. NASA Astronaut Garan, Russian Cosmonauts Borisenko and Samokutyaev are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 crew members Shane Kimbrough of NASA, left, Sergey Ryzhikov, center, and Andrey Borisenko of Roscosmos, right, pose for pictures in front of the base of a Soyuz rocket on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Expedition 49 flight engineer Shane Kimbrough of NASA, flight engineer Andrey Borisenko of Roscosmos, and Soyuz commander Sergey Ryzhikov of Roscosmos are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

nhq201704100051 (April 10, 2017) --- Girls in traditional Kazakhstan dress welcome back from space Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos at a Karaganda Airport welcome ceremony in Kazakhstan on Monday, April 10, 2017. 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100054 (April 10, 2017) --- Expedition 50 Commander Shane Kimbrough of NASA, left, and Flight Engineers Sergey Ryzhikov, center, and Andrey Borisenko of Roscosmos are seen at a Karaganda Airport welcome ceremony in Kazakhstan on Monday, April 10, 2017. 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 28 Commander Andrey Borisenko, left, Flight Engineer Alexander Samokutyaev and Flight Engineer Ron Garan, right, are seen at a press conference at the Karaganda Airport in Kazakhstan following their landing to earth on Friday, Sept. 16, 2011. Borisenko, Samokutyaev and Garan are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 28 Commander Andrey Borisenko, left, Flight Engineers Alexander Samokutyaev, center, and Ron Garan, sit in chairs outside the Soyuz Capsule just minutes after they landed in a remote area outside the town of Zhezkazgan, Kazakhstan, on Friday, Sept. 16, 2011. NASA Astronaut Garan, Russian Cosmonauts Borisenko and Samokutyaev are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 Russian Flight Engineer Andrey Borisenko performs the traditional door signing Monday, April 4, 2011 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Borisenko was launched onboard the Soyuz rocket the following morning with Expedition 27 Soyuz Commander Alexander Samokutyaev and NASA Flight Engineer Ron Garan on a mission to the International Space Station (ISS). Photo Credit: (NASA/Carla Cioffi)

nhq201704100053 (April 10, 2017) --- Expedition 50 Commander Shane Kimbrough of NASA, left, and Flight Engineers Sergey Ryzhikov, center, and Andrey Borisenko of Roscosmos are seen at a Karaganda Airport welcome ceremony in Kazakhstan on Monday, April 10, 2017. 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 flight engineer Andrey Borisenko of Roscosmos, in foreground, and Soyuz commander Sergey Ryzhikov of Roscosmos take part in tilt table training during media day on Friday, Sept. 16, 2016 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 49 flight engineer Shane Kimbrough of NASA, flight engineer Andrey Borisenko of Roscosmos, and Soyuz commander Sergey Ryzhikov of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 28 Commander Andrey Borisenko answers reporters questions in traditional Kazakh dress during a press conference at the Karaganda airport shortly after he and Flight Engineers Alexander Samokutyaev and Ron Garan landed in their Soyuz TMA-21 outside of the town of Zhezkazgan, Kazakhstan, on Friday, Sept. 16, 2011. NASA Astronaut Garan, Russian Cosmonauts Borisenko and Samokutyaev are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

nhq201704100005 (April 10, 2017) --- Russian cosmonaut Andrey Borisenko of Roscosmos rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Sergey Ryzhikov of Roscosmos landed in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704110056 (April 101, 2017) --- Officials, family, and media gather to welcome home Expedition 50 Flight Engineers Sergey Ryzhikov, foreground, and Andrey Borisenko of Roscosmos at the Chkalovsky Airport in Star City, Russia several hours after they and NASA astronaut Shane Kimbrough landed their Soyuz MS-02 spacecraft in a remote area outside the town of Zhezkazgan, Kazakhstan, on Tuesday, April 11, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704110055 (April 101, 2017) --- Officials, family, and media gather to welcome home Expedition 50 Flight Engineers Sergey Ryzhikov, foreground, and Andrey Borisenko of Roscosmos at the Chkalovsky Airport in Star City, Russia several hours after they and NASA astronaut Shane Kimbrough landed their Soyuz MS-02 spacecraft in a remote area outside the town of Zhezkazgan, Kazakhstan, on Tuesday, April 11, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100030 (April 10, 2017) --- NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos sit in chairs outside the Soyuz MS-02 spacecraft a few moments after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100035 (April 10, 2017) --- Russian cosmonaut Andrey Borisenko of Roscosmos is carried into a medical tent shortly after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Sergey Ryzhikov of Roscosmos landed in their Soyuz MS-02 spacecraft in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100052 (April 10, 2017) --- Matryoshka Dolls depicting Expedition 50 Flight Engineers Andrey Borisenko and Sergey Ryzhikov of Roscosmos, and NASA astronaut Shane Kimbrough are seen at a welcome ceremony, Monday, April 10, 2017 at the Karaganda Airport in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov of Roscosmos, center, and flight engineer Andrey Borisenko of Roscosmos left, pose for a group picture by a model of the Soyuz rocket during media day at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 Russian Flight Engineer Andrey Borisenko has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Borisenko, Soyuz Commander Alexander Samokutyaev and NASA Flight Engineer Ron Garan launched in their Soyuz TMA-21 rocket from the Baikonur Cosmodrome in Kazakhstan at 4:18 a.m. local time. (Photo Credit: NASA/Carla Cioffi)

Expedition 49 Soyuz commander Sergey Ryzhikov and flight engineer Andrey Borisenko of Roscosmos play chess at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Ryzhikov, Borisenko, and flight engineer Shane Kimbrough of NASA are preparing for launch to the International Space Station in their Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, pose for pictures in front of their Soyuz MS-02 spacecraft during the final fit check of the spacecraft on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov of Roscosmos, center, and flight engineer Andrey Borisenko of Roscosmos, right, work on Soyuz training at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 Russian Flight Engineer Andrey Borisenko has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Borisenko, Soyuz Commander Alexander Samokutyaev and NASA Flight Engineer Ron Garan launched in their Soyuz TMA-21 rocket from the Baikonur Cosmodrome in Kazakhstan at 4:18 a.m. local time. (Photo Credit: NASA/Carla Cioffi)

Expedition 27 Russian Flight Engineer Andrey Borisenko has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Borisenko, Soyuz Commander Alexander Samokutyaev and NASA Flight Engineer Ron Garan launched in their Soyuz TMA-21 rocket from the Baikonur Cosmodrome in Kazakhstan at 4:18 a.m. local time. (Photo Credit: NASA/Carla Cioffi)

Expedition 49 crew members Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, are seen during a tour of the Baikonur Cosmodrome Museum on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 crew members Andrey Borisenko of Roscosmos, left, Sergey Ryzhikov of Roscosmos, center, and Shane Kimbrough, right, speak with technicians in front of their Soyuz MS-02 spacecraft during the final fit check of the spacecraft on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov of Roscosmos, center, and flight engineer Andrey Borisenko of Roscosmos, right, attend a training briefing at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, pose for pictures in front of their Soyuz MS-02 spacecraft during the final fit check of the spacecraft on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 crew members NASA Flight Engineer Ron Garan, left, and Russian Flight Engineer Andrey Borisenko wave farewell to well wishers as they depart the Cosmonaut Hotel on the evening before their Soyuz launch to the International Space Station on Monday, April 4, 2011 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 27 Russian Flight Engineer Andrey Borisenko awaits to have his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Photo Credit: (NASA/Carla Cioffi)

Expedition 49 Russian cosmonaut Andrey Borisenko of Roscosmos is seen during the Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 crew members Shane Kimbrough of NASA, left, Sergey Ryzhikov, center, and Andrey Borisenko of Roscosmos, left, exit the Gagarin Cosmonaut Training Center (GCTC) aircraft after arriving in Baikonur, Kazakhstan on Friday, Oct. 7, 2016. The trio are preparing for launch to the International Space Station in their Soyuz MS-02 spacecraft from the Baikonur Cosmodrome in Kazakhstan on October 19, 2016. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 crew members Shane Kimbrough of NASA, left, Sergey Ryzhikov, center, and Andrey Borisenko of Roscosmos, left, pose for a picture after arriving in Baikonur, Kazakhstan on Friday, Oct. 7, 2016. The trio are preparing for launch to the International Spacestation in their Soyuz MS-02 spacecraft from the Baikonur Cosmodrome in Kazakhstan on October 19, 2016. Photo Credit: (NASA/Victor Zelentsov)

nhq201704100027 (April 10, 2017) --- NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos sit in chairs outside the Soyuz MS-02 spacecraft a few moments after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100002 (April 10, 2017) --- NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos sit in chairs outside the Soyuz MS-02 spacecraft a few moments after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 flight engineer Andrey Borisenko of Roscosmos, top, flight engineer Shane Kimbrough of NASA, middle, and Soyuz commander Sergey Ryzhikov of Roscosmos, bottom, climb the ladder to the elevator as they prepare to board the Soyuz MS-02 rocket for launch, Wednesday, Oct. 19, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Borisenko, and Ryzhikov will spend the next four months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 49 flight engineer Andrey Borisenko of Roscosmos, top, flight engineer Shane Kimbrough of NASA, middle, and Soyuz commander Sergey Ryzhikov of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-02 rocket for launch, Wednesday, Oct. 19, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Borisenko, and Ryzhikov will spend the next four months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 27 NASA Flight Engineer Ron Garan, left, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 Flight Engineer Andrey Borisenko, third from left, depart the Cosmonaut Hotel on the evening before their Soyuz launch to the International Space Station Monday, April 4, 2011 in Baikonur, Kazakhstan. The Soyuz, which has been dubbed “Gagarin”, is launching one week shy of the 50th anniversary of the launch of Yuri Gagarin from the same launch pad in Baikonur on April 12, 1961 to become the first human to fly in space. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 NASA astronaut Shane Kimbrough, Russian cosmonauts Sergei Ryzhikov and Andrey Borisenko of Roscosmos are seen on monitors in a control room as they participate in their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 Russian Flight Engineer Andrey Borisenko, sitting far left, smiles as NASA Flight Engineer Ron Garan flashes the peace sign to friends and family as they await to have their Russian Sokol suits prepared for launch on April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 49 NASA astronaut Shane Kimbrough, Russian cosmonauts Sergei Ryzhikov and Andrey Borisenko of Roscosmos are seen in a photograph outside the Soyuz simulator during their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

The Soyuz simulator control room is seen as Expedition 49 NASA astronaut Shane Kimbrough, Russian cosmonauts Sergei Ryzhikov and Andrey Borisenko of Roscosmos participate in their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 Russian Flight Engineer Andrey Borisenko, left, and Soyuz Commander Alexander Samokutyaev have a word after having their Russian Sokol suits prepared for launch on the morning of Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 27 NASA Flight Engineer Ron Garan, left, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 Flight Engineer Andrey Borisenko, third from left, walk out to salute Head of the Russian Federal Space Agency Anatoly Perminov at the Baikonur Cosmodrome prior to their launch onboard the Soyuz TMA-21 to the International Space Station (ISS), Tuesday, April 5, 2011 in Kazakhstan. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, pose for pictures in front of their Soyuz MS-02 spacecraft during their first check dress rehearsal activities, Saturday, Oct. 8, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borsenko will launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 Russian cosmonauts Sergei Ryzhikov, left, and Andrey Borisenko of Roscosmos answer questions from the press outside the Soyuz simulator ahead of their Soyuz qualification exams with NASA astronaut Shane Kimbrough, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 NASA Flight Engineer Ron Garan, left, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 Flight Engineer Andrey Borisenko, third from left, walk out to salute Head of the Russian Federal Space Agency Anatoly Perminov, far right, at the Baikonur Cosmodrome prior to their launch onboard the Soyuz TMA-21 to the International Space Station (ISS), Tuesday, April 5, 2011 in Kazakhstan. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, pose for pictures, in their Sokol launch and entry suits, in front of their Soyuz MS-02 spacecraft during their first check dress rehearsal activities, Saturday, Oct. 8, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borsenko will launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Technicians talk with Expedition 49 flight engineer Andrey Borisenko of Roscosmos, left, Soyuz commander Sergey Ryzhikov of Roscosmos, center, and flight engineer Shane Kimbrough of NASA, right, during their first check dress rehearsal activities, Saturday, Oct. 8, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borsenko will launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 backup crew members Mark Vande Hei of NASA, left, Alexander Misurkin of Roscosmos, second from left, and Nikolai Tikhonov of Roscosmos, third from left, pose for pictures with Expedition 49 prime crew members Shane Kimbrough of NASA, third from right, Sergey Ryzhikov of Roscosmos, second from right, and Andrey Borisenko of Roscosmos, right, in front of the base of a Soyuz rocket on Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Expedition 49 flight engineer Shane Kimbrough of NASA, flight engineer Andrey Borisenko of Roscosmos, and Soyuz commander Sergey Ryzhikov of Roscosmos are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 prime crew members Shane Kimbrough of NASA, left, Sergey Ryzhikov of Roscosmos, second from left, and Andrey Borisenko of Roscosmos, third from left, pose with Expedition 49 backup crew members Nikolai Tikhonov of Roscosmos, third from right, Alexander Misurkin of Roscosmos, second from right, and Mark Vande Hei of NASA, right, pose for a picture outside of the Baikonur Cosmodrome Museum, Thursday, Oct. 13, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov of Roscosmos, second from left, and flight engineer Andrey Borisenko of Roscosmos third from left, pose for a picture with backup crew members Mark Vande Hei of NASA, third from right, Alexander Misurkin of Roscosmos, second from right, and Nikolai Tikhonov of Roscosmos, right, infront of at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 NASA Flight Engineer Ron Garan, left, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 Flight Engineer Andrey Borisenko, right, talk to officials prior to their launch on board the Soyuz TMA-21 spacecraft to the International Space Station, Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz, which has been dubbed “Gagarin”, is launching one week shy of the 50th anniversary of the launch of Yuri Gagarin from the same launch pad in Baikonur on April 12, 1961 to become the first human to fly in space. Photo Credit: (NASA/Victor Zelentsov)

Expedition 23 prime and backup crew members, from left, NASA's Tracy Caldwell Dyson, Russian Aleksander Skvortsov, Russian Mikhail Kornienko, NASA's Scott Kelly, Russian Alexander Samokutyayev, and Russian Andrei Borisenko are seen during the State Commission meeting to approve the Soyuz launch of Caldwell Dyson, Skvortsov and Kornienko, Thursday, April 1, 2010 in Baikonur, Kazakhstan. The crew is kept in a separate room with a glass window in order to help maintain their health. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergei Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos prepare to enter the Soyuz simulator ahead of their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 crew members: NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergei Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos don their Russian Sokol Suits ahead of their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergei Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos pose for a group photograph outside the Soyuz simulator ahead of their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 flight engineer Shane Kimbrough of NASA left, and Soyuz commander Sergey Ryzhikov take part in the traditional tree planing ceremony at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov and flight engineer Andrey Borisenko of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

The crew of Expedition 27 Russian Flight Engineer Andrey Borisenko, sitting far left, Soyuz Commander Alexander Samokutyaev and NASA Flight Engineer Ron Garan, sitting far right, are seen after having their Russian Sokol suits prepared for launch on the morning of Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. Russian backup crew members Anatoly Ivanishin, far left, and Anton Shkaplerov are seen standing behind the prime crew. Photo Credit: (NASA/Carla Cioffi)

Expedition 49 NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergei Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos answer questions from the press outside the Soyuz simulator ahead of their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 49 flight engineer Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov of Roscosmos, second from left, and flight engineer Andrey Borisenko of Roscosmos third from left, pose for a picture with backup crew members Mark Vande Hei of NASA, third from right, Alexander Misurkin of Roscosmos, second from right, and Nikolai Tikhonov of Roscosmos, right, after taking part in the traditional tree planing ceremony at the Cosmonaut Hotel on Friday, Sept. 16, 2016 in Baikonur, Kazakhstan. Kimbrough, Ryzhikov, and Borisenko are scheduled to launch to the International Space Station aboard the Soyuz MS-02 spacecraft from the Baikonur Cosmodrome on September 24 Kazakh time. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 Russian Flight Engineer Andrey Borisenko, far right, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 NASA Flight Engineer Ron Garan, third from right, talk to Head of the Russian Federal Space Agency Anatoly Perminov, far left, prior to their launch on board the Soyuz TMA-21 spacecraft to the International Space Station, Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz, which has been dubbed “Gagarin”, is launching one week shy of the 50th anniversary of the launch of Yuri Gagarin from the same launch pad in Baikonur on April 12, 1961 to become the first human to fly in space. Photo Credit: (NASA/Victor Zelentsov)

Expedition 27 Russian Flight Engineer Andrey Borisenko, far right, Expedition 27 Soyuz Commander Alexander Samokutyaev and Expedition 27 NASA Flight Engineer Ron Garan, third from right, talk to Mike Suffredini, Manager, International Space Station (ISS) Program, far left, prior to their launch on board the Soyuz TMA-21 spacecraft to the International Space Station, Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz, which has been dubbed “Gagarin”, is launching one week shy of the 50th anniversary of the launch of Yuri Gagarin from the same launch pad in Baikonur on April 12, 1961 to become the first human to fly in space. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 prime crew members, seated in their Sokol suits, Shane Kimbrough of NASA, left, Soyuz commander Sergey Ryzhikov, center, and flight engineer Andrey Borisenko of Roscosmos, right, and backup crew members, standing, Mark Vande Hei of NASA, left, Alexander Misurkin, center, and Nikolai Tikhonov of Roscosmos, left, pose for a picture as they prepare to conduct their first check dress rehearsal activities, Saturday, Oct. 8, 2016 at the Baikonur Cosmodrome in Kazakhstan. Kimbrough, Ryzhikov, and Borsenko will launch from the Baikonur Cosmodrome in Kazakhstan on Oct. 19. Photo Credit: (NASA/Victor Zelentsov)

Expedition 49 crew members: NASA astronaut Shane Kimbrough, left, Russian cosmonaut Sergei Ryzhikov of Roscosmos, center, and Russian cosmonaut Andrey Borisenko of Roscosmos report to NASA and Roscosmos officials during their Soyuz qualification exams, Wednesday, Aug. 31, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

JSC2016e105226 (08/16/2016) --- Russian cosmonaut Andrey Borisenko of Expedition 49 to the International Space Station.

Zoya Borisenko, center, wife of Expedition 27 Flight Engineer Andrey Borisenko, is seen at Russian Mission Control in Korolev, Russia speaking to her husband shortly after his arrival at the International Space Station on Thursday, April 7, 2011. Photo Credit: (NASA/Carla Cioffi)

The crews of Expedition 26 and Expedition 27 are seen on a large screen TV on the far right at the Russian Mission Control Center in Korolev, Russia shortly after Expedition 27's arrival to the International Space Station on Thursday, April 7, 2011. From top left clockwise: Italian Flight Engineer Paolo Nespoli, Expedition 27 Commander Dimitry Kondratiev, NASA Flight Engineer Cady Coleman, NASA Flight Engineer Ron Garan, Soyuz Commander Alexander Samokutyaev and Flight Engineer Andrey Borisenko. Photo Credit: (NASA/Carla Cioffi)

Expedition 23 Flight Engineer Tracy Caldwell Dyson, front left, Expedition 23 Soyuz Commander Alexander Skvortsov, front center, and Expedition 23 Flight Engineer Mikhail Kornienko pose with backup crewmembers NASA Flight Engineer Scott Kelly of the U.S., back left, Flight Engineer Alexander Samokutyayev of Russia, back center, and Flight Engineer Andrei Borisenko of Russia, prior to the crews’ launch onboard a Soyuz rocket to the International Space Station on Friday, April 2, 2010, in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

The crews of Expedition 27 and Expedition 28 are seen on a large screen TV at the Russian Mission Control Center in Korolev, Russia shortly after Expedition 28's arrival to the International Space Station on Friday, June 10, 2011. From top left clockwise: Expedition 27 NASA Flight Engineer Ron Garan, Expedition 27 Russian Flight Engineer Andrey Borisenko, Expedition 27 Commander Alexander Samokutyaev, AXA (Japanase Aerospace Exploration Agency) Flight Engineer Satoshi Furukawa, Expedition 28 Soyuz Commander Sergei Volkov and Expedition 28 NASA Flight Engineer Mike Fossum. Photo Credit: (NASA/Carla Cioffi)

The crews of Expedition 26 and Expedition 27 are seen on a large screen TV at the Russian Mission Control Center in Korolev, Russia shortly after Expedition 27's arrival to the International Space Station on Thursday, April 7, 2011. From top left clockwise: Italian Flight Engineer Paolo Nespoli, Expedition 27 Commander Dimitry Kondratiev, NASA Flight Engineer Cady Coleman, NASA Flight Engineer Ron Garan, Soyuz Commander Alexander Samokutyaev and Flight Engineer Andrey Borisenko. Photo Credit: (NASA/Carla Cioffi)

The crews of Expedition 27 and Expedition 28 are seen on a large screen TV at the Russian Mission Control Center in Korolev, Russia shortly after Expedition 28's arrival to the International Space Station on Friday, June 10, 2011. From top left clockwise: Expedition 27 NASA Flight Engineer Ron Garan, Expedition 27 Russian Flight Engineer Andrey Borisenko, Expedition 27 Commander Alexander Samokutyaev, AXA (Japanase Aerospace Exploration Agency) Flight Engineer Satoshi Furukawa, Expedition 28 Soyuz Commander Sergei Volkov and Expedition 28 NASA Flight Engineer Mike Fossum. Photo Credit: (NASA/Carla Cioffi)

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

JSC2016e105227 (10/14/2015) --- All three members of Expedition 49 to the International Space Station; NASA astronaut Shane Kimbrough (left), along with Russian cosmonauts Sergey Ryzhikov (center) and Andrey Borisenko (right).

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

JSC2010-E-038790 (March 2010) --- Russian cosmonaut Andrey Borisenko, backup crew member for Expedition 23. Photo credit: Roscosmos/Gagarin Cosmonaut Training Center.

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

ISS027-E-018248 (29 April 2011) --- Russian cosmonaut Andrey Borisenko, Expedition 27 flight engineer, is pictured near the TBU-V thermostat-controlled incubator located in the Russian segment of the International Space Station.

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

ISS027-E-019171 (29 April 2011) --- Russian cosmonaut Andrey Borisenko, Expedition 27 flight engineer, is pictured while holding cameras in the Zvezda Service Module of the International Space Station.

ISS028-E-018228 (20 July 2011) --- Russian cosmonaut Andrey Borisenko, Expedition 28 commander, holds a Petri dish in the Zvezda Service Module of the International Space Station.

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

ISS028-E-013757 (1 July 2011) --- Russian cosmonaut Andrey Borisenko, Expedition 28 commander, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

PHOTO DATE: 01-26-11 LOCATION: Bldg 2 SUBJECT: Expedition 27 press conference with NASA astronaut Ron Garan and his crewmates, Russian cosmonauts Aleksandr Samokutyayev and Andrei Borisenko PHOTOGRAPHER: James Blair

nhq201704100009 (April 10, 2017) --- The Soyuz MS-02 spacecraft is seen as it lands with Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100021 (April 10, 2017) --- Russian Search and Rescue teams arrive at the Soyuz MS-02 spacecraft shortly after it landed with Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100014 (April 10, 2017) --- Russian Search and Rescue teams chase the Soyuz MS-02 spacecraft as it lands with Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-21 spacecraft is seen as it lands with Expedition 28 Commander Andrey Borisenko, and Flight Engineers Ron Garan, and Alexander Samokutyaev in a remote area outside of the town of Zhezkazgan, Kazakhstan, on Friday, Sept. 16, 2011. NASA Astronaut Garan, Russian Cosmonauts Borisenko and Samokutyaev are returning from more than five months onboard the International Space Station where they served as members of the Expedition 27 and 28 crews. Photo Credit: (NASA/Bill Ingalls)

nhq201704100043 (April 10, 2017) --- American and Russian support personnel work around the Soyuz MS-02 spacecraft shortly after it landed with Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq201704100019 (April 10, 2017) --- The Soyuz MS-02 spacecraft is seen as it lands with Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineers Sergey Ryzhikov and Andrey Borisenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Monday, April 10, 2017 (Kazakh time). Kimbrough, Ryzhikov, and Borisenko are returning after 173 days in space where they served as members of the Expedition 49 and 50 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)