Expedition 28 Flight Engineer Alexander Samokutyaev waves as he is carried in a chair to the medical tent shortly after he and Expedition 28 Commander Andrey Borisenko, and Flight Engineer Ron Garan landed in their Soyuz TMA-21 Soyuz Capsule 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 Flight Engineer Alexander Samokutyaev is given a routine medical check outside the Soyuz TMA-21 Capsule just minutes after he and Expedition 28 Commander Andrey Borisenko, and Flight Engineer 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, 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 27 Soyuz Commander Alexander Samokutyaev performs the traditional door signing Monday, April 4, 2011 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Samokutyaev was launched onboard the Soyuz rocket the following morning with Expedition 27 NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko on a mission to the International Space Station (ISS). Photo Credit: (NASA/Carla Cioffi)

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

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 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), answers a question during a press conference on Wednesday, Sept. 24, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Sept. 26 and will carry Samokutyaev, Elena Serova of Roscosmos, and Barry Wilmore of NASA into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

ISS027-E-022454 (5 May 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 27 flight engineer, uses a glovebox to service the Russian Bioemulsion science payload in the Poisk Mini-Research Module 2 (MRM2) of the International Space Station. The Bioemulsion experiment is attempting to develop faster technologies for obtaining microorganism biomass and biologically active substance biomass for creating highly efficient environmentally pure bacteria, enzymes, and medicinal/pharmaceutical preparations.

The Soyuz TMA-14M rocket is launched with Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) Flight Engineer Elena Serova of Roscosmos, and Flight Engineer Barry Wilmore of NASA, Friday, September 26, 2014 at the Baikonur Cosmodrome in Kazakhstan. Samokutyaev, Serova, and Wilmore will spend the next five and a half months aboard the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Joel Kowsky)

Expedition 27 Soyuz Commander Alexander Samokutyaev has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko 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)

The Soyuz TMA-14M rocket is launched with Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) Flight Engineer Elena Serova of Roscosmos, and Flight Engineer Barry Wilmore of NASA, Friday, September 26, 2014 at the Baikonur Cosmodrome in Kazakhstan. Samokutyaev, Serova, and Wilmore will spend the next five and a half months aboard the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz TMA-14M rocket is launched with Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) Flight Engineer Elena Serova of Roscosmos, and Flight Engineer Barry Wilmore of NASA, Friday, September 26, 2014 at the Baikonur Cosmodrome in Kazakhstan. Samokutyaev, Serova, and Wilmore will spend the next five and a half months aboard the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Joel Kowsky)

Expedition 27 Soyuz Commander Alexander Samokutyaev has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko 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 Soyuz Commander Alexander Samokutyaev has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko 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 Soyuz Commander Alexander Samokutyaev has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, April 5, 2011. Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko 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 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Flight Engineer Elena Serova of Roscosmos hold up tiger toys that will be carried with them to the International Space Station to commemorate International Tiger Day at a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Wednesday, Sept. 24, 2014. The mission is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 crew members, Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Thursday, Sept. 25, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 and will send Samokutyaev, Serova and Wilmore on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), bottom, Flight Engineer Barry Wilmore of NASA, middle, and Flight Engineer Elena Serova of Roscosmos, top, wave farewell prior to boarding the Soyuz TMA-14M rocket for launch, Thursday, Sept. 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. Samokutyaev, Serova, and Wilmore will spend the next five and a half months aboard the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Joel Kowsky)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), right, receives the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to his launch on the Soyuz rocket to the International Space Station (ISS), Thursday, Sept. 25, in Baikonur, Kazakhstan. Samokutyaev, Flight Engineer Elena Serova of Roscosmos, left, and Flight Engineer Barry Wilmore of NASA, not pictured, will spend the next five and a half months living and working aboard the ISS. Wilmore chose not to participate in the blessing. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Soyuz Commander, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, answers a question during a press conference on Wednesday, Sept. 24, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. He is seen with Flight Engineer Barry Wilmore of NASA, left, and Flight Engineer Elena Serova of Roscosmos, right. Launch of the Soyuz rocket is scheduled for Sept. 26 and will carry Samokutyaev, Wilmore, and Serova into orbit to begin their five and a half month mission on the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 crew members, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), left, Flight Engineer Elena Serova of Roscosmos, center, and Flight Engineer Barry Wilmore of NASA, right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Thursday, Sept. 25, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 and will send Samokutyaev, Serova and Wilmore on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-14M spacecraft on Thursday, September 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Samokutyaev, Expedition 41 Flight Engineer Elena Serova of Roscosmos and Flight Engineer Barry Wilmore of NASA is scheduled to launch at 2:25 a.m. Kazakhstan Time on Friday, September 26. Photo Credit: (NASA/Joel Kowsky)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-14M spacecraft on Thursday, September 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Samokutyaev, Expedition 41 Flight Engineer Elena Serova of Roscosmos and Flight Engineer Barry Wilmore of NASA is scheduled to launch at 2:25 a.m. Kazakhstan Time on Friday, September 26. 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 27 NASA Flight Engineer Ron Garan, sitting right, smiles to friends and family while Soyuz Commander Alexander Samokutyaev checks his Russian Sokol Suit the morning of their launch on Tuesday, April 5, 2011 at the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

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 39 backup crew member Aleksandr Samokutyaev of the Russian Federal Space Agency, Roscosmos, is seen in quarantine, behind glass, during the final press conference held ahead of the launch of Expedition 39 prime crew members; Soyuz Commander Alexander Skvortsov of the Russian Federal Space Agency, Flight Engineer Steve Swanson of NASA, and Flight Engineer Oleg Artemyev of Roscosmos, to the International Space Station, Monday, March 24, 2014 at the Cosmonaut Hotel in Baikonur, Kazakhstan. 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 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 41 prime crew members, Flight Engineer Barry Wilmore of NASA, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), and Flight Engineer Elena Serova of Roscosmos, are seen at the State Commission meeting to approve the Soyuz launch of Expedition 41 to the International Space Station in Baikonur, Kazakhstan on Wedneday, Sept. 24, 2014. The mission is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 prime crew members, Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, pose for a photo at the conclusion of the press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Wednesday, Sept. 24, 2014. Their mission to the International Space Station is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 prime crew members, Flight Engineer Barry Wilmore of NASA, right, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, left, pose for a photo with items they will take with them to the International Space Station at the conclusion of the press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Wednesday, Sept. 24, 2014. The mission is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, wave to the crowd at the conclusion of the press conference, Wednesday, Sept. 24, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The mission to the International Space Station is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

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 42 Cosmonaut Elena Serova of the Russian Federal Space Agency (Roscosmos, left, Alexander Samokutyaev of Roscosmos, center, and NASA Astronaut Barry Wilmore of NASA sit in chairs outside the Soyuz TMA-14M spacecraft just minutes after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 42 Cosmonaut Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) rests in a chair outside the Soyuz TMA-14M spacecraft just minutes after he and NASA Astronaut Barry Wilmore of NASA, and Elena Serova of Roscosmos landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency, Roscosmos, left, and Flight Engineer Barry Wilmore of NASA, right, are seen as they talk with family members after having their Russian Sokol suit pressure checked in preparation for their launch onboard the Soyuz TMA-14M spacecraft on Thursday, Sept. 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Samokutyaev, Wilmore, and Flight Engineer Elena Serova of Roscosmos is scheduled to launch at 2:25 a.m. Kazakhstan time on Friday, Sept. 26. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz TMA-14M spacecraft on Thursday, Sept. 25, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 (Kazakhstan time) and will carry Samokutyaev and fellow crewmates, Flight Engineer Elena Serova of Roscosmos and Flight Engineer Barry Wilmore of NASA, into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) speaks with his family having his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-14M spacecraft on Thursday, September 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Samokutyaev, Expedition 41 Flight Engineer Elena Serova of Roscosmos and Flight Engineer Barry Wilmore of NASA is scheduled to launch at 2:25 a.m. Kazakhstan Time on Friday, September 26. Photo Credit: (NASA/Joel Kowsky)

Expedition 41 Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency, (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, are seen as they talk with family members after having their Russian Sokol suits pressure checked in preparation for their launch onboard the Soyuz TMA-14M spacecraft on Thursday, Sept. 25, 2014 at the Baikonur Cosmodrome in Baikonur, Kazakhstan. The Soyuz spacecraft with Wilmore, Samokutyaev, and Serova is scheduled to launch at 2:25 a.m. Kazakhstan time on Friday, Sept. 26. Photo Credit: (NASA/Victor Zelentsov)

Expedition 41 Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, are seen prior to having their Russian Sokol suits pressure checked in preparation for their launch onboard the Soyuz TMA-14M spacecraft on Thursday, September 25, 2014, at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Wilmore, Samokutyaev, and Serova is scheduled to launch at 2:25 a.m. Kazakhstan Time on Friday, September 26. Photo Credit: (NASA/Joel Kowsky)

Expedition 42 Cosmonaut Elena Serova of the Russian Federal Space Agency (Roscosmos, seated left, Alexander Samokutyaev of Roscosmos, center, and NASA Astronaut Barry Wilmore of NASA sit in chairs outside the Soyuz TMA-14M spacecraft just minutes after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 41 Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), and Flight Engineer Elena Serova of Roscosmos are seen while they wait to have their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz TMA-14M spacecraft on Thursday, Sept. 25, 2014, at the Baiknour Cosmodrome, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 (Kazakhstan time) and will carry Wilmore, Samokutyaev, and Serova into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Flight Engineer Barry Wilmore of NASA, right, waits to have his Russian Sokol suit pressure checked while Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) has his suit checked on Thursday, Sept. 25, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 (Kazakhstan time) and will carry Samokutyaev, Wilmore, and Flight Engineer Elena Serova of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Cosmonaut Elena Serova of the Russian Federal Space Agency (Roscosmos, left, Alexander Samokutyaev of Roscosmos, center, and NASA Astronaut Barry Wilmore of NASA sit in chairs outside the Soyuz TMA-14M spacecraft just minutes after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz TMA-14M spacecraft on Thursday, Sept. 25, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Sept. 26 (Kazakhstan time) and will carry Samokutyaev and fellow crewmates, Flight Engineer Elena Serova of Roscosmos and Flight Engineer Barry Wilmore of NASA, into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Cosmonaut Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) is carried in a chair from an all terrain vehicle (ATV) to a medical tent just minutes after he and NASA Astronaut Barry Wilmore of NASA, and Elena Serova of Roscosmos landed in their Soyuz TMA-14M spacecraft in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 42 Cosmonaut Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, who returned to Earth from the International Space Station two days earlier, is seen as he comes to say farewell to Expedition 43 crew members; NASA Astronaut Scott Kelly, Russian Cosmonauts Mikhail Kornienko and Gennady Padalka of the Russian Federal Space Agency (Roscosmos) at the the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia Saturday, March 14, 2015. The Expedition 43 trio is preparing for launch to the International Space Station in their Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time. As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)

Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), bottom, Flight Engineer Barry Wilmore of NASA, middle, and Elena Serova of Roscosmos, top, wave farewell prior to boarding the Soyuz TMA-14M spacecraft for launch, Thursday, Sept. 25, 2014 at the Baikonur Cosmodrome in Kazakhstan. Samokutyaev, Wilmore, and Serova will spend the next five and a half months aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

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 41 Flight Engineer Elena Serova of the Russian Federal Space Agency (Roscosmos), left, receives the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to her launch on the Soyuz rocket to the International Space Station (ISS), Thursday, Sept. 25, 2014, in Baikonur, Kazakhstan. She and fellow crew mates, Soyuz Commander Alexander Samokutyaev of Roscosmos, right, and Flight Engineer Barry Wilmore of NASA, not pictured, will spend the next five and a half months living and working aboard the ISS. Wilmore chose not to participate in the blessing. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Aubrey Gemignani)

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)

The Soyuz TMA-14M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Friday, Sept. 26, 2014 carrying Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), Flight Engineer Barry Wilmore of NASA, and Flight Engineer Elena Serova of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. (Photo Credit: NASA/Aubrey Gemignani)

The Soyuz TMA-14M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Friday, Sept. 26, 2014 carrying Expedition 41 Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), Flight Engineer Barry Wilmore of NASA, and Flight Engineer Elena Serova of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. (Photo Credit: NASA/Aubrey Gemignani)

Expedition 41 prime crew members Flight Engineer Barry Wilmore of NASA, far left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), second left, and Flight Engineer Elena Serova, of Roscosmos, center, pose for a picture with Expedition 41 backup crew members Flight Engineer Scott Kelly of NASA, third right, Soyuz Commander Gennady Padalka of Roscosmos, second right, and Flight Engineer Mikhail Kornienko of Roscosmos, far right, at the conclusion of a press conference, Wednesday, September 24, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Samokutyaev, Serova, and Wilmore will launch about their Soyuz TMA-14M spacecraft in the early hours of September 26. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo Credit: (NASA/Joel Kowsky)

Expedition 41 Flight Engineer Barry Wilmore of NASA, center, is seen with Soyuz Commander Alexander Samokutyaev, left, and Flight Engineer Elena Serova of the Russian Federal Space Agency (Roscosmos), right, after putting on their Russian Sokol suits in preparation for launch onboard the Soyuz TMA-14M spacecraft on Thursday, September 25, 2014, at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Wilmore, Samokutyaev, and Serova are scheduled to launch on their mission to the International Space Station at 2:25 a.m. Kazakhstan Time on Friday, September 26. Photo Credit: (NASA/Joel Kowsky)

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 41 prime crew members, from left to right, Flight Engineer Barry Wilmore of NASA, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), and Flight Engineer Elena Serova of Roscosmos are seen here with the backup crew members, Flight Engineer Scott Kelly of NASA, Soyuz Commander Gennadi Padalka of Roscosmos, and Flight Engineer Mikhail Kornienko of Roscosmos at the State Commission meeting to approve the Soyuz launch of Expedition 41 to the International Space Station in Baikonur, Kazakhstan on Wedneday, Sept. 24, 2014. The mission to the is set to launch Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 41 Flight Engineer Barry Wilmore of NASA, left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Elena Serova of Roscosmos, right, are seen as they depart Building 254 following suitup on Thursday, Sept. 25, 2014 at the Baikonur Cosmodrome in Baikonur, Kazakhstan. The trio is set to launch on a five and a half month mission to the International Space Station onboard the Soyuz TMA-14M spacecraft at 2:25 a.m. Kazakhstan time on Friday, Sept. 26. Photo Credit: (NASA/Victor Zelentsov)

Expedition 41 prime crew members Flight Engineer Barry Wilmore of NASA, far left, Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), second left, and Flight Engineer Elena Serova of Roscosmos, center, are seen with Expedition 41 back up crew members, Flight Engineer Scott Kelly of NASA, third right, Soyuz Commander Gennady Padalka of Roscosmos, second right, and Flight Engineer Mikhail Kornienko of Roscosmos, right, during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Wednesday, Sept. 24, 2014. The prime crew is set to launch to the International Space Station on Sept. 26 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

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)

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)

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)

JSC2014-E-079812 (5 Sept. 2014) --- Accompanied by his wife and daughters at the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 41 Flight Engineer Barry Wilmore of NASA takes a walk through the Gagarin Museum Sept. 5. Wilmore, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos are scheduled to launch from the Baikonur Cosmodrome in Kazakhstan on Sept. 26, Kazakh time, in their Soyuz TMA-14M spacecraft for a 5 ? month mission on the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to conduct a long duration mission on the station. Photo credit: NASA/Stephanie Stoll

Oksana Samokutyaev, far left, wife of Expedition 27 Soyuz Commander Alexander Samokutyaev, 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)

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

JSC2010-E-038789 (March 2010) --- Russian cosmonaut Alexander Samokutyaev (backup Soyuz CDR) is in training as a member of the backup crew for Expedition 23. Photo credit: Roscosmos/Gagarin Cosmonaut Training Center.

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

ISS041-E-042451 (30 Sept. 2014) --- Russian cosmonaut Alexander Samokutyaev, Expedition 41 flight engineer, works with test samples in a glovebox in the Poisk Mini-Research Module 2 (MRM2) of the International Space Station.

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

ISS027-E-010840 (8 April 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 27 flight engineer, works with Matryoshka-R Phantom hardware in the Rassvet Mini-Research Module 1 (MRM1) of the International Space Station.

ISS028-E-018265 (21 July 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 28 flight engineer, works with a Biorisk-MSN experiment container in the Zvezda Service Module of the International Space Station.

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

ISS028-E-034974 (30 Aug. 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 28 flight engineer, exercises using the advanced Resistive Exercise Device (aRED) in the Tranquility node of the International Space Station.

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

ISS041-E-042459 (30 Sept. 2014) --- Russian cosmonaut Alexander Samokutyaev, Expedition 41 flight engineer, works with test samples in a glovebox in the Poisk Mini-Research Module 2 (MRM2) of the International Space Station.

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

PHOTO DATE: 05-15-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 42 crew members Butch Wilmore, Alexander Samokutyaev and Yelena Serova during Routine Ops training PHOTOGRAPHER: BILL STAFFORD

ISS027-E-013205 (15 April 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 27 flight engineer, wearing in a work apron, is pictured in the Unity node of the International Space Station.

ISS042E325661 (03/11/2015) ---Three crew members of Expedition 42 prepare to return to Earth on Mar. 11, 2015 after a 167-day mission on the International Space Station. Expedition 42 commander Barry Wilmore of NASA and flight engineers Alexander Samokutyaev and Elena Serova of the Russian Federal Space Agency (Roscosmos) board the returning spacecraft. US NASA astronaut Terry Virts who will stay on as Commander of Expedition 43 tweeted this image of the crew boarding the Soyuz for the ride home. Cosmonaut Alexander Samokutyaev whose nickname is "Sasha" was last on. The Tweet had this comment "Sasha closing the hatch- пока Саш.".

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)

The Soyuz TMA-14M spacecraft is seen as it descends through the fog before landing with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 prime crew members Ron Garan of NASA, and Russian cosmonauts Andrey Borisenko and Alexander Samokutyaev participate in a news conference held March 11, 2011 at the Gagarin Cosmonaut Training Center in Star City, Russia. Garan, Borisenko and Samokutyaev will launch in the Soyuz TMA-21 spacecraft from the Baikonur Cosmodrome in Kazakhstan March 30 (Kazakhstan time) for a 5 ½ month stay on the International Space Station. Photo credit: NASA/Stephanie Stoll

A shadow of a Russian MI-8 Helicopter is seen during the Soyuz TMA-14M spacecraft landing with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

ISS028-E-020716 (3 Aug. 2011) --- Russian cosmonauts Sergei Volkov and Alexander Samokutyaev (out of frame), both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity (EVA) on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.

The Soyuz TMA-14M spacecraft is seen as it lands with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

ISS028-E-020969 (3 Aug. 2011) --- Russian cosmonauts Sergei Volkov and Alexander Samokutyaev (out of frame), both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity (EVA) on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.

ISS028-E-020778 (3 Aug. 2011) --- Russian cosmonauts Sergei Volkov and Alexander Samokutyaev (out of frame), both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity (EVA) on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.

The Soyuz TMA-14M spacecraft is seen as it lands with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. 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)

The Soyuz TMA-21 spacecraft is seen with the Moon in the background 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)

The Soyuz TMA-14M spacecraft is seen as it lands with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14M spacecraft is seen as it lands with Expedition 42 commander Barry Wilmore of NASA, Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos) and Elena Serova of Roscosmos near the town of Zhezkazgan, Kazakhstan on Thursday, March 12, 2015. NASA Astronaut Wilmore, Russian Cosmonauts Samokutyaev and Serova are returning after almost six months onboard the International Space Station where they served as members of the Expedition 41 and 42 crews. Photo Credit: (NASA/Bill Ingalls)

ISS028-E-019437 (29 July 2011) --- Russian cosmonaut Alexander Samokutyaev, Expedition 28 flight engineer, works with Russian Orlan-MK spacesuits in the Pirs Docking Compartment of the International Space Station in preparation for a spacewalk scheduled for Aug. 3, 2011. During the six-hour excursion Samokutyaev and Russian cosmonaut Sergei Volkov (out of frame), flight engineer, will move a cargo boom from one airlock to another, install a prototype laser communications system and deploy an amateur radio micro-satellite.

ISS028-E-020928 (3 Aug. 2011) --- Russian cosmonauts Sergei Volkov and Alexander Samokutyaev (out of frame), both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity (EVA) on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.

ISS028-E-020962 (3 Aug. 2011) --- Russian cosmonauts Sergei Volkov and Alexander Samokutyaev, both Expedition 28 flight engineers, attired in Russian Orlan spacesuits, participate in a session of extravehicular activity (EVA) on the Russian segment of the International Space Station. During the six-hour, 23-minute spacewalk, Volkov and Samokutyaev moved a cargo boom from one airlock to another, installed a prototype laser communications system and deployed an amateur radio micro-satellite.