Expedition 49 astronaut Takuya Onishi of the Japan Aerospace Exploration Agency (JAXA) is carried into a medical tent shortly after he, Russian cosmonaut Anatoly Ivanishin of Roscosmos, and NASA astronaut Kate Rubins landed in a remote area near the town of Zhezkazgan, Kazakhstan on Sunday, Oct. 30, 2016 (Kazakh time). Rubins, Ivanishin, and Onishi are returning after 115 days in space where they served as members of the Expedition 48 and 49 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

ISS049e008889 (09/23/2016) --- Night view of the Earth from the International Space Station by the crew of Expedition 49. The land mass northwest is South Korea and south of Korea is Japan. The small dotted lights east of South Korea and north of Japan are fishing boats in the Sea of Japan.

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)

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)

STS117-S-050 (22 June 2007) --- With drag chute deployed, Space Shuttle Atlantis slows to a stop after landing on runway 22 at NASA's Dryden Flight Research Center at Edwards Air Force Base in California concluding a successful assembly mission to the International Space Station. Atlantis landed on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 12:49:38 p.m. (PDT). Nose gear touchdown was at 12:49:49 p.m. and wheel stop was at 12:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the station was a success, installing and activating the S3/S4 truss and retracting the P6 arrays. Onboard were astronauts Rick Sturckow, commander; Lee Archambault, pilot; Jim Reilly, Steven Swanson, Patrick Forrester and John "Danny" Olivas, all STS-117 mission specialists. Also onboard was astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut.

STS117-S-049 (22 June 2007) --- Space Shuttle Atlantis' main landing gear touches down on runway 22 at NASA's Dryden Flight Research Center at Edwards Air Force Base in California concluding a successful assembly mission to the International Space Station. Atlantis landed on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 12:49:38 p.m. (PDT). Nose gear touchdown was at 12:49:49 p.m. and wheel stop was at 12:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the station was a success, installing and activating the S3/S4 truss and retracting the P6 arrays. Onboard were astronauts Rick Sturckow, commander; Lee Archambault, pilot; Jim Reilly, Steven Swanson, Patrick Forrester and John "Danny" Olivas, all STS-117 mission specialists. Also onboard was astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut.

STS117-S-047 (22 June 2007) --- Space Shuttle Atlantis' main landing gear touches down on runway 22 at NASA's Dryden Flight Research Center at Edwards Air Force Base in California concluding a successful assembly mission to the International Space Station. Atlantis landed on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 12:49:38 p.m. (PDT). Nose gear touchdown was at 12:49:49 p.m. and wheel stop was at 12:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the station was a success, installing and activating the S3/S4 truss and retracting the P6 arrays. Onboard were astronauts Rick Sturckow, commander; Lee Archambault, pilot; Jim Reilly, Steven Swanson, Patrick Forrester and John "Danny" Olivas, all STS-117 mission specialists. Also onboard was astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut.

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

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

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

NASA astronaut Shane Kimbrough participates in a STEM in 30 piece about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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

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)

NASA astronaut Shane Kimbrough participates in a live broadcast on Periscope about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

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)

NASA astronaut Shane Kimbrough gives Nikola a fist bump after a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

NASA astronaut Shane Kimbrough is seen after providing a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks to an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

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)

NASA astronaut Shane Kimbrough speaks to an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. -- Against a black moonless sky, Space Shuttle Endeavour blazes into space after an ontime liftoff at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey. [Photo by Ray Yost]

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

Audience members raise their hands to ask NASA astronaut Shane Kimbrough a question about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

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)

KENNEDY SPACE CENTER, FLA. -- Media and staff in the NASA News Center at Kennedy Space Center applaud the successful landing of Atlantis, visible on the television screens, at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Returning from mission STS-117, Atlantis touched down on runway 22 at Edwards on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 3:49:38 p.m. EDT on runway 22. Nose gear touchdown was at 3:49:49 p.m. and wheel stop was at 3:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the International Space Station was a success, installing the S3/S4 truss. The returning crew of seven includes astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut. Photo credit: NASA/Debbie Odom

Media and staff in the NASA News Center at Kennedy Space Center applaud the successful landing of Atlantis, visible on the television screens, at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Returning from mission STS-117, Atlantis touched down on runway 22 at Edwards on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 3:49:38 p.m. EDT on runway 22. Nose gear touchdown was at 3:49:49 p.m. and wheel stop was at 3:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the International Space Station was a success, installing the S3/S4 truss. The returning crew of seven includes astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut.

EDWARDS AIR FORCE BASE, CALIF. -- Returning from mission STS-117, Atlantis approaches touchdown on the runway at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Atlantis landed on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 3:49:38 p.m. EDT on runway 22. Nose gear touchdown was at 3:49:49 p.m. and wheel stop was at 3:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the International Space Station was a success, installing and activating the S3/S4 truss and retracting the P6 arrays. The returning crew of seven includes astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut. Photo credit: NASA/Tony Landis

EDWARDS AIR FORCE BASE, CALIF. -- The Space Shuttle Atlantis starts to deploy its braking parachute as it approaches touchdown on the runway at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Returning from mission STS-117, Atlantis landed on orbit 219 after 13 days, 20 hours and 12 minutes in space. The landing was diverted to California due to marginal weather at the Kennedy Space Center. Main gear touchdown was at 3:49:38 p.m. EDT on runway 22. Nose gear touchdown was at 3:49:49 p.m. and wheel stop was at 3:50:48 p.m. This was the 51st landing for the Space Shuttle Program at Edwards Air Force Base. The mission to the International Space Station was a success, installing and activating the S3/S4 truss and retracting the P6 arrays. The returning crew of seven includes astronaut Sunita Williams, who was flight engineer on the Expedition 15 crew. She achieved a new milestone, a record-setting flight at 194 days, 18 hours and 58 minutes, the longest single spaceflight ever by a female astronaut or cosmonaut. Photo credit: NASA/Carla Thomas

Audience members watch a live broadcast of Expedition 53 crew launching on the Soyuz rocket to the International Space Station during a presentation by Expedition 49/50 NASA astronaut Shane Kimbrough, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough presents a montage of photos and the Expedition 50 patch to the Arlington Tech High School who hosted his presentation on his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins speaks about her time onboard the International Space Station during Expeditions 48 and 49 Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins speaks about her time onboard the International Space Station during Expeditions 48 and 49 Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins participates in a Facebook Live, answering questions about her time onboard the International Space Station during Expeditions 48 and 49, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins conducts a DNA experiment for a STEM in 30 segment, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins served on the International Space Station during Expeditions 48 and 49 and became the first person to sequence DNA in space. She completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins speaks about her time onboard the International Space Station during Expeditions 48 and 49 Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins speaks about her time onboard the International Space Station during Expeditions 48 and 49 Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins conducts a DNA experiment for a STEM in 30 segment, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins served on the International Space Station during Expeditions 48 and 49 and became the first person to sequence DNA in space. She completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins answers a question from an audience member about her time onboard the International Space Station during Expeditions 48 and 49, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins conducts a DNA experiment for a STEM in 30 segment, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins served on the International Space Station during Expeditions 48 and 49 and became the first person to sequence DNA in space. She completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins participates in a Facebook Live, answering questions about her time onboard the International Space Station during Expeditions 48 and 49, Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

NASA Astronaut Kate Rubins speaks about her time onboard the International Space Station during Expeditions 48 and 49 Thursday, April 27, 2017 at Smithsonian's National Air and Space Museum in Washington. Rubins became the first person to sequence DNA in space and completed her first mission when she landed in a remote area near the town of Zhezkazgan, Kazakhstan in October 2016. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. - From a blaze of fire and smoke, Space Shuttle Endeavour roars off the launch pad on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

NASA astronaut Shane Kimbrough poses for a photo with a an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. -Space Shuttle Endeavour roars into the black sky on columns of fire as it lifts off Launch Pad 39A on mission STS-113. Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey. [Photo by Scott Andrews]

KENNEDY SPACE CENTER, FLA. -- Space Shuttle Endeavour, painting a swath of light on nearby water, blazes into the night sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. - Launch Pad 39A is illuminated as Space Shuttle Endeavour blazes into the sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. - Blue mach diamonds appear behind the main engine nozzles on Space Shuttle Endeavour as it roars off the launch pad on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. -- As the clouds of smoke and steam roll away beneath it, Space Shuttle Endeavour blazes into the night sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. -- Space Shuttle Endeavour blazes into the night sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

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)

An audience member wearing a spacesuit joins NASA astronaut Shane Kimbrough onstage for a photo during a presentation about Kimbrough's time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. - Water near Launch Pad 39A provides a mirror image of Space Shuttle Endeavour blazing a path into the night sky after launch on mission STS-113. Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. -- From a blaze of fire and smoke, Space Shuttle Endeavour roars off the launch pad on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. -- Launch Pad 39A is illuminated as Space Shuttle Endeavour blazes into the sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. - Among the visitors watching the launch of Space Shuttle Endeavour on mission STS-113 are NASA Administrator Sean O'Keefe (top, center) and Glen Mahone, associate administrator for public affairs, NASA (left of O'Keefe). Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

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)

KENNEDY SPACE CENTER, FLA. - Against a black moonless sky, Space Shuttle Endeavour lights up the night as it blazes into space after an ontime liftoff at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey. [Photo by Scott Andrews]

A young audience member listens while NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. - As the clouds of smoke and steam roll away into the darkness, Space Shuttle Endeavour blazes into the night sky on mission STS-113. Liftoff from Launch Pad 39A occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

KENNEDY SPACE CENTER, FLA. -- Brilliant clouds of smoke and steam roll away from Launch Pad 39A as Space Shuttle Endeavour blazes into the black sky. Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey. [Photo by Scott Andrews]

KENNEDY SPACE CENTER, FLA. - Watching the launch of Space Shuttle Endeavour on mission STS-113 are NASA Administrator Sean O'Keefe (left) and Associate Administrator of Public Affairs Glen Mahone. Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey.

A young audience member examines the photo of NASA astronaut Shane Kimbrough during a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

KENNEDY SPACE CENTER, FLA. -- Space Shuttle Endeavour climbs into the black sky as it lifts off Launch Pad 39A on mission STS-113. Liftoff occurred ontime at 7:49:47 p.m. EST. The launch is the 19th for Endeavour, and the 112th flight in the Shuttle program. Mission STS-113 is the 16th assembly flight to the International Space Station, carrying another structure for the Station, the P1 integrated truss. Also onboard are the Expedition 6 crew, who will replace Expedition 5. Endeavour is scheduled to land at KSC after an 11-day journey. [Photo by Scott Andrews]

NASA astronaut Shane Kimbrough calls on an audience member who has a question during a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

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)

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)

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)

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)

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)

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)

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)

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)

nhq201704100010 (April 10, 2017) --- NASA astronaut Shane Kimbrough is carried into a medical tent 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)

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)

nhq201704100025 (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)