
nhq201704100049 (April 10, 2017) --- Girls in traditional Kazakhstan dress wait to welcome the return of 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)

nhq201704100050 (April 10, 2017) --- Girls in traditional Kazakhstan dress wait to welcome the return of 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)

nhq201704100042 (April 10, 2017) --- Russian MI-8 helicopters are seen at the Soyuz MS-02 landing site after the spacecraft 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)

nhq201704100041 (April 10, 2017) --- Russian helicopter crew members wait in the cockpit of an MI-8 at the Soyuz MS-02 landing site after the spacecraft 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)

Expedition 50 crew member NASA astronaut Peggy Whitson is seen inside an International Space Station module mockup during her crew's Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Engineers in a nearby control room monitor Expedition 50 crew members ESA astronaut Thomas Pesquet, Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Peggy Whitson as they perform their final qualification exams in a Soyuz simulator, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew member, NASA astronaut Jack Fisher, dons his Sokol suit ahead of his Soyuz qualification exams with Russian cosmonaut Fyodor Yurchikhin, and ESA astronaut Paolo Nespoli, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Peggy Whitson conduct their final qualification exams inside a Soyuz simulator, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew member, NASA astronaut Jack Fisher, dons his Sokol suit ahead of his Soyuz qualification exams with Russian cosmonaut Fyodor Yurchikhin, and ESA astronaut Paolo Nespoli, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

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)

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)

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)

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)

nhq201704100016 (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)

nhq201704100018 (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

nhq201704100040 (April 10, 2017) --- A Russian support helicopter leaves the Soyuz MS-02 landing site shortly after the capsule 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)

nhq201704100039 (April 10, 2017) --- 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)

nhq201704100022 (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)

nhq201704100017 (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)

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)

nhq201704100015 (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)

nhq201704100008 (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)

nhq201704100044 (April 10, 2017) --- 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)

nhq201704100011 (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)

nhq201704100013 (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)

nhq201704100036 (April 10, 2017) --- 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)

nhq201704100001 (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)

nhq201704100006 (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)

nhq201704100007 (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)

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)

nhq201704100012 (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)

nhq201704100037 (April 10, 2017) --- 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)

nhq201704100020 (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)

Expedition 50 NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet pose for a group photograph at the conclusion of a press conference, Wednesday, Oct. 26, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

A bulletin board is seen with details about the qualification exams of the main and back-up crews for Expedition 50, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. 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)

nhq201704100026 (April 10, 2017) --- NASA astronaut Shane Kimbrough is helped out of the Soyuz MS-02 spacecraft just minutes after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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)

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)

nhq201704100028 (April 10, 2017) --- Russian cosmonaut Sergey Ryzhikov of Roscosmos rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100029 (April 10, 2017) --- NASA astronaut Shane Kimbrough rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100024 (April 10, 2017) --- Russian cosmonaut Sergey Ryzhikov of Roscosmos is helped out of the Soyuz MS-02 spacecraft just minutes after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100034 (April 10, 2017) --- Russian cosmonaut Sergey Ryzhikov of Roscosmos is carried into a medical tent shortly after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100031 (April 10, 2017) --- NASA astronaut Shane Kimbrough rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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 50 backup crew members, NASA astronaut Jack Fisher, left, Russian cosmonaut Fyodor Yurchikhin of Roscosmos, center, and ESA astronaut Paolo Nespoli, left, answer questions from the press ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, Russian cosmonaut Oleg Novitskiy of Roscosmos, and ESA astronaut Thomas Pesquet are monitored in a central room during the crew's Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 Russian cosmonaut Oleg Novitskiy of Roscosmos smiles as he listens to a reporter's question ahead of the final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet meet with mission managers ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet listens to a reporter's question ahead of the final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and NASA astronaut Peggy Whitson, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson smiles as she listens to a reporter's question ahead of the final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet dons his Sokol suit ahead of his final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and Russian cosmonaut Oleg Novitskiy of Roscosmos, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet dons his Sokol suit ahead of his final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and Russian cosmonaut Oleg Novitskiy of Roscosmos, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet dons his Sokol suit ahead of his final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and Russian cosmonaut Oleg Novitskiy of Roscosmos, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 Russian cosmonaut Oleg Novitskiy of Roscosmos dons his Sokol suit ahead of his final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet dons his Sokol suit ahead of his final qualification exams with fellow crew mates NASA astronaut Peggy Whitson and Russian cosmonaut Oleg Novitskiy of Roscosmos, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet are seen ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew members, ESA astronaut Paolo Nespoli, left, Russian Russian cosmonaut Fyodor Yurchikhin of Roscosmos, center, and NASA astronaut Jack Fisher meet with mission managers during their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Peggy Whitson are seen on the monitors of the Soyuz simulator control room during final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson dons her Sokol suit ahead of her final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew members, NASA astronaut Jack Fisher, left, Russian cosmonaut Fyodor Yurchikhin of Roscosmos, center, and ESA astronaut Paolo Nespoli, left, answer questions from the press ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson is seen after donning her Sokol suit ahead of her final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew members, ESA astronaut Paolo Nespoli, left, Russian cosmonaut Fyodor Yurchikhin of Roscosmos, center, and NASA astronaut Jack Fisher don their Sokol suits ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

A pair of Russian Sokol suit gloves are seen as Expedition 50 crew members ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson, and Russian cosmonaut Oleg Novitskiy of Roscosmos, prepare for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew members NASA astronaut Jack Fisher, left, and Russian cosmonaut Fyodor Yurchikhin of Roscosmos, answer questions from the press ahead of their Soyuz qualification exams with ESA astronaut Paolo Nespoli, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 backup crew members, NASA astronaut Jack Fisher, left, Russian cosmonaut Fyodor Yurchikhin of Roscosmos, center, and ESA astronaut Paolo Nespoli, left, answer questions from the press ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson dons her Sokol suit ahead of her final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson dons her Sokol suit ahead of her final qualification exams with fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. 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)

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 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet prepare for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet prepare for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Space Station expedition 50/51 crew member Thomas Pesquet hangs a commemorative plaque in the Payload Operation Integration Center at NASA's Marshall Space Flight Center.
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Expedition 50 NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet visit Red Square to lay roses at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Wednesday, Oct. 26, 2016, in Moscow. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet visit Red Square to lay roses at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Wednesday, Oct. 26, 2016, in Moscow. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Peggy Whitson tour the museum at the Gagarin Cosmonaut Training Center (GCTC), Wednesday, Oct. 26, 2016, in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Peggy Whitson report to mission managers for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet report to mission managers for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet walk out from suitup for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Peggy Whitson answer reporter's questions ahead of their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet is seen inside the Soyuz simulator during final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Pesquet, Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Peggy Whitson are scheduled to launch in November 2016. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet laugh together as they prepare for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 NASA astronaut Peggy Whitson answers a reporter's question as Russian cosmonaut Oleg Novitskiy of Roscosmos looks on, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Whitman, Novitskiy and ESA astronaut Thomas Pesquet performed their final qualification exams right after talking to the press. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet pose for a group photograph ahead of their Soyuz qualification exams, Monday, Oct. 24, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Peggy Whitson answer reporter's questions ahead of their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet report to mission managers for their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet pose for a portrait ahead of their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 Russian cosmonaut Oleg Novitskiy of Roscosmos prepares to join ESA astronaut Thomas Pesquet, background, and NASA astronaut Peggy Whitson inside the Soyuz simulator for final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 ESA astronaut Thomas Pesquet is seen inside the Soyuz simulator during final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Pesquet, Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Peggy Whitson are scheduled to launch in November 2016. Photo Credit: (NASA/Bill Ingalls)

ESA Flight Surgeon Dr. Brigitte Godard, seated left, NASA Flight ‎Surgeon Jennifer Law, center, talk with Expedition 50 NASA astronaut Peggy Whitson ahead of the final qualification exams with Whitson and her fellow crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and ESA astronaut Thomas Pesquet, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

nhq201611180002 (Nov. 18, 2016) --- In this one second exposure photograph, the Soyuz MS-03 spacecraft is seen launching from the Baikonur Cosmodrome with Expedition 50 crewmembers NASA astronaut Peggy Whitson, Russian cosmonaut Oleg Novitskiy of Roscosmos, and ESA astronaut Thomas Pesquet from the Baikonur Cosmodrome in Kazakhstan, Friday, Nov. 18, 2016, (Kazakh time) (Nov 17 Eastern time). Whitson, Novitskiy, and Pesquet will spend approximately six months on the orbital complex. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members NASA astronaut Peggy Whitson, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and ESA astronaut Thomas Pesquet pose for a portrait ahead of their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

Expedition 50 crew members ESA astronaut Thomas Pesquet, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Peggy Whitson pose for a group photograph ahead of their final qualification exams, Tuesday, Oct. 25, 2016, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

nhq201704100033 (April 10, 2017) --- NASA astronaut Shane Kimbrough rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100046 (April 10, 2017) --- NASA astronaut Shane Kimbrough, seated right, is seen inside a Russian MI-8 helicopter after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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)

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)

nhq201704100045 (April 10, 2017) --- NASA astronaut Shane Kimbrough, left, is helped into an awaiting Russian MI-8 helicopter by NASA flight doctor Blake Chamberlain shortly after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100048 (April 10, 2017) --- NASA astronaut Shane Kimbrough arrives at the Karaganda Airport in Kazakhstan airport after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos and, Russian cosmonaut Andrey Borisenko 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)

nhq201704100004 (April 10, 2017) --- Russian cosmonaut Sergey Ryzhikov of Roscosmos rests in a chair outside the Soyuz MS-02 spacecraft just minutes after he, NASA astronaut Shane Kimbrough, and Russian cosmonaut Andrey Borisenko 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)

nhq201704100047 (April 10, 2017) --- NASA astronaut Shane Kimbrough arrives at the Karaganda Airport in Kazakhstan airport after he, Russian cosmonaut Sergey Ryzhikov of Roscosmos and, Russian cosmonaut Andrey Borisenko 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)