ESA Astronaut Samantha Cristoforetti and Expedition 43 commander Terry Virts pose for a photo in front of Crew Quarters (CQ) after hair cut.

JSC2001-00033 (January 2001) --- Astronaut Terry W. Virts Jr., pilot.

JSC2009-E-208982 (30 July 2009) --- Astronaut Terry W. Virts Jr., pilot (alternate portrait)

JSC2009-E-157219 (30 July 2009) --- Astronaut Terry W. Virts Jr., pilot

NASA STS-130 Pilot Terry Virts, right, is interviewed by Mid-Atlantic Sports Network (MASN) reporter Debbie Taylor at Nationals Park Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

NASA STS-130 Pilot Terry Virts throws the opening pitch at Nationals Park on Tuesday, April 20, 2010, in Washington. Photo Credit: (Courtesy of the Washington Nationals)

NASA STS-130 Pilot Terry Virts, center, is interviewed by Washington Nationals radio broadcasters Charlie Slowes, right, and David Jageler on Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

Flight Engineers Terry Virts and Samantha Cristoforetti pose with floating apples recently delivered to the ISS. Image was taken in the Unity Node 1.

ISS042E238515 (02/10/2015) --- U.S. astronaut Terry Virts does a checkout of his spacesuit’s systems on Feb. 10, 2015 in preparation for an extravehicular activity (EVA) or spacewalk. Virts is a Flight Engineer of Expedition 42 onboard the International Space Station.

NASA astronaut Terry Virts of Expedition 43 on the International Space Station checks the remote control Canadarm2 on Apr.26, 2015. The Canadarm 2 is used to grapple arriving spacecraft and moving them to their docking ports.

ISS042E135484 (01/10/2015) --- NASA astronaut Terry Virts flight engineer of Expedition 42 on the International Space Station tweeted this Caribbean image of the sunny isle of #"Jamaica" on Jan. 10, 2015.

Extravehicular crewmember 2 (EV2) Terry Virts is reflected in the helmet visor of EV1 Barry Wilmore during Extravehicular Activity 29 (EVA 29). Image was released by astronaut on Twitter.

Commander Barry Wilmore and flight engineers Samantha Cristoforetti and Terry Virts pose for a photo in the Destiny U.S. Laboratory. Cristoforetti is a European Space Agency (ESA) astronaut. Image was released by astronaut on Twitter.

iss042e019467 (12/01/2014) ---US Astronaut Terry Virts assists European Space Agency Astronaut Samantha Cristoforetti with emergency training exercises aboard the International Space Station 1 December 2014.

ISS043E227213 (05/20/2015) --- Earth observation of South America from the International Space Station on May 20, 2015. NASA astronaut Terry Virts tweeted this image with the remark of: "Farm fields in central #Brazil #SouthAmerica".

ISS042E080610 (12/29/2014) --- One of the 7 wonders of the Earth, the Grand Canyon in the US West as viewed from the International Space Station. NASA astronaut Terry Virts tweeted this revealing image that was taken on Dec. 29, 2014.

ISS042E119876 (01/10/2015) --- US Astronaut and Flight Engineer Terry Virts a member of Expedition 42 on the International Space Station prepares to take scientific photographs on Jan. 10, 2015.

iss042e013622 (11/24/2014) --- US Astronaut Terry Virts and European Space Agency Astronaut Samantha Cristoforetti aboard the International Space Station take a break from working on science experiments to prepare for an interview.

ISS043E276456 (05/31/2015) --- Expedition 43 Commander and NASA astronaut Terry Virts is seen here inside the station’s Destiny laboratory preparing camera equipment for an upcoming documentation session.

The camera is reflected in his helmet visor as Extravehicular crewmember 2 (EV2) Terry Virts takes a self-portrait during Extravehicular Activity 29 (EVA 29). Image was released by astronaut on Twitter.

iss042e031364 (12/08/2014) ---US Astronaut Terry Virts aboard the International Space Station caught this stunning image of the Red Sea and East Afirca at dusk 8 December 2014.

JSC2009-E-246745 (4 Dec. 2009) --- Astronaut Terry Virts, STS-130 pilot, participates in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

ISS042E135486 (01/10/2015) --- Just another sunny day in the Caribbean sea as viewed by astronauts aboard the International Space Station. This image was tweeted out by NASA astronaut Terry Virts as he captured the Earth observation of #Cuba and #Bahamas on Jan. 10, 2015.

ISS042E296377 (03/02/2015) --- Literally flying in microgravity US astronaut Terry Virts a flight engineer of Expedition 42 aboard the International Space Station , Tweeted this message to his followers on Mar, 2, 2015 "Our official “100 Days” patch. 2.5 months to go. Time is flying WAY TOO FAST"!

ISS042E136080 (01/15/2015) --- US astronaut Barry "Butch" Wilmore, Expedition 42 Commander on the International Space Station, is photographed in the Unity Node 1 with three floating mustard bottles recently delivered to the ISS. This picture was taken by his fellow US astronaut Terry Virts.

iss043e021247 (03/17/2015) --- NASA astronaut Terry Virts, Commander of Expedition 43 on the International Space Station sees a double image of himself staring back in the stations Cupola window during Earth sunrise on Mar. 17, 2015.

ISS043E207615 (05/18/2015) --- Expedition 43 Commander Terry Virts on the International Space Station works with experiment samples stored inside one of the station’s Minus Eighty-Degree Laboratory Freezer for ISS, or MELFI. These laboratory freezers are used to maintain experiment samples at ultra-cold temperatures throughout a mission.

ISS043E184521 (05/10/2015) --- NASA astronaut Terry Virts Expedition 43 Commander on the International Space Station tweeted this Earth observation image of South America with the following comment: "Salar de Uyuni in the #Bolivia desert #SouthAmerica. The world's largest salt flat".

JSC2009-E-246721 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

JSC2009-E-246736 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

JSC2009-E-246739 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

JSC2009-E-246713 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

JSC2009-E-246716 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in an International Space Station mock-up/trainer in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

JSC2009-E-246727 (4 Dec. 2009) --- Astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, participate in a robotics training session in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center.

ISS043E056048 (03/28/2015) --- NASA astronaut Scott Kelly (top right) emerges through the hatch from the Soyuz spacecraft after launching from the Earth earlier to be welcomed by Expedition 43 commander and NASA astronaut Terry Virts aboard the International Space Station on Mar. 28, 2015. Russian cosmonaut Mikhail Kornienko (top left) is next out of the hatch to be welcomed aboard. These two will begin a unique one-year mission on board the station to study longer time frames in space to prepare for the journey to Mars.

ISS043E270899 (05/30/2015) --- The Expedition 43 crew gathers aboard the International Space Station to affix their mission patch to the vehicle. In view is Commander Terry Virts (center left), Scott Kelly (top left), Gennady Padalka (top center), Anton Shkaplerov (top right), Mikhail Kornienko (bottem right), Samantha Cristoforetti (bottom center)

ISS043e089477 (04/06/2015) --- NASA astronaut Terry Virts, Commander of Expedition 43 on the International Space Station, is seen here recording a special message for a science conference along with his crewmates cosmonaut Mikhail Kornienko, Russian Federal Space Agency (ROSCOSMOS), ESA (European Space Agency) astronaut Samantha Cristoforetti, NASA Astronaut Scott Kelly (bottom left), Russian cosmonauts, Anton Shkaplerov, and Gennady Padalka (ROSCOSMOS).

ISS043E157479 (04/29/2015) --- The Soyuz TMA-15M vehicle has been docked to the Rassvet module since it carried NASA astronaut Terry Virts, ESA (European Space Agency) astronaut Samantha Cristoforetti and Russian cosmonaut Anton Shkaplerov to the International Space Station in Nov. 2014. It will return them home after six months in orbit on May 13.

ISS043E276404 (05/31/2015) --- Expedition 43 Commander and NASA astronaut Terry Virts is seen here in the International Space Station’s Cupola module, a 360 degree Earth and space viewing platform. The module also contains a robotic workstation for controlling the station’s main robotic arm, Canadarm2, which is used for a variety of operations including the remote grappling of visiting cargo vehicles.

ISS042E296399 (03/02/2015) --- US astronaut Terry Virts, ESA (European Space Agency) astronaut Samantha Cristoforetti and Russian cosmonaut Anton Shkaplerov acknowledge their 100th day aboard the International Space Station on Mar. 2, 2015 with this tweeted picture and the comment “Celebrating flight day 100 of our mission aboard the Station with @AstroSamantha and @AntonAstrey”.

ISS043E080914 (04/01/2015) --- This Earth view from the International Space Station Apr. 1, 2015 (bottom left corner) is Soyuz TMA-15M which carried NASA astronaut Terry Virts, ESA (European Space Agency) astronaut Samantha Cristoforetti and Russian cosmonaut Anton Shkaplerov to the ISS back in No. 2014 and will remain until May 2015. The further one (top left corner) is Progress 57 a Russian supply spaceship which launched and docked in October last year and will undock at the end of April to return to Earth.

ISS043E241729 (05/24/2015) --- Expedition 43 commander and NASA astronaut Terry Virts is seen here inside of the station’s Cupola module. The Cupola is designed for the observation of operations outside the ISS such as robotic activities, the approach of vehicles, and spacewalks. It also provides spectacular views of Earth and celestial objects for use in astronaut observation experiments. It houses the robotic workstation that controls the space station’s robotic arm and can accommodate two crewmembers simultaneously.

ISS043E183985 (05/08/2015) --- Typhoon Noul from a camera aboard the International Space Station taken by the Expedition 43 crew led by Commander Terry Virts, NASA astronaut. Noul originated in the tropical Western Pacific, brushing the island of Yap before strengthening rapidly and clipping the northern Philippines as a super typhoon, winding up on the Pacific coast of Japan reduced to a tropical storm.

ISS043E001020 (03/13/2015) --- Expedition 43 commander and NASA astronaut Terry Virts (middle) is joined by ESA (European Space Agency) astronaut Samantha Cristoforetti (left) and Russian cosmonaut Shkaplerov (right) aboard the International Space Station. The trio are seen here inside the U.S. Destiny Lab preparing for an interview on March 13, 2015.

ISS043E091837 (04/07/2015) --- NASA astronaut Terry Virts, Commander of Expedition 43 aboard the International Space Station, dons eye protection from the sun while working in Cupola, the station’s 360 degree viewing platform. The Cupola contains the primary control station for the station’s robotic arm, Canadarm2, which the crew use to capture visiting spacecraft like SpaceX’s Dragon and Orbital ATK’s Cygnus. The specialized windows also provide one of the best vantage points on station for Earth study and photography.

ISS043E142528 (04/26/2015) ---From the International Space Station NASA astronaut Terry Virts (right) tweeted this image of he and his crewmate Russian cosmonaut Anton Shkaplerov celebrating the birthday of ESA (European Space Agency) astronaut Samantha Cristoforetti (middle). His tweet commented: "Happy Birthday @AstroSamantha! We had a great time celebrating as a crew."

ISS043E190395 (05/13/2015) --- NASA astronaut Terry Virts prepares the Multi-user Droplet Combustion Apparatus from inside the Combustion Integrated Rack for upcoming runs of the FLame Extinguishment Experiment, or FLEX-2. The FLEX-2 experiment studies how quickly fuel burns, the conditions required for soot to form, and how mixtures of fuels evaporate before burning. Understanding these processes could lead to the production of a safer spacecraft as well as increased fuel efficiency for engines using liquid fuel on Earth.

Caption: ISS043E044174 (03/22/2015) --- Its haircut time onboard the International Space Station as Expedition 43 Commander and NASA astronaut Terry Virts handles the scissors while ESA (European Space Agency) astronaut Samantha Cristoforetti holds the vacuum to immediately pull the fine hair strands into the safe container so they don't float away into the station. Hair trims are a regular occurrence during an astronaut's six month tour.

iss042e046523 (12/16/14) --- Expedition 42 Flight Engineer Terry Virts of NASA is seen here on 16 December 2014 setting up the station’s Microgravity Science Glovebox for the upcoming Micro-5 experiment. Micro-5 will use roundworms as a model organism with the microbe Salmonella typhimurium, which causes food poisoning in humans, to better understand the risks of in-flight infections in space explorers.

Expedition 42 Flight Engineer Terry Virts of NASA answers a question during a press conference on Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Nov. 24 and will carry Virts, Flight Engineer Samantha Cristoforetti of the European Space Agency, and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

NASA STS-130 crew Commander George Zamka, far left, Pilot Terry Virts, Mission Specialists Kathryn Hire, Stephen Robinson, Nicholas Patrick and Robert Behnken, far right, pose for pictures on the field at Nationals Park, Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

Former NASA astronauts Eileen Collins, left, Terry Virts, center, and Scott Parazynski are seen during a meeting of the National Space Council in the East Room of the White House, Monday, June 18, 2018, in Washington. Chaired by the Vice President, the council's role is to advise the President regarding national space policy and strategy, and review the nation's long-range goals for space activities. Photo Credit: (NASA/Bill Ingalls)

Date: 06-12-15 Location: Ellington Field Subject: Expedition 43 crew members Terry Virts and Samantha Cristoforetti return to Ellington Field after their mission to the ISS. Photographer: James Blair

ISS043E091755 (04/07/2015) --- Expedition 43 Commander Terry Virts is seen here working inside of the Columbus laboratory on the Blood Pressure Regulation (BP Reg) experiment. Astronauts returning from long-duration space flights risk experiencing dizziness or fainting when they stand immediately after returning to Earth. This has an important health risk as it reduces the potential for astronauts to safely escape from an emergency situation. BP Reg will help researchers develop appropriate countermeasures so that astronauts returning from long-duration space flights will have very low risk of experiencing dizziness or fainting when they return to Earth.

ISS043E091740 (04/07/2015) --- Expedition 43 Commander Terry Virts is seen here working inside of the Columbus laboratory on the Blood Pressure Regulation (BP Reg) experiment. Astronauts returning from long-duration space flights risk experiencing dizziness or fainting when they stand immediately after returning to Earth. This has an important health risk as it reduces the potential for astronauts to safely escape from an emergency situation. BP Reg will help researchers develop appropriate countermeasures so that astronauts returning from long-duration space flights will have very low risk of experiencing dizziness or fainting when they return to Earth.

ISS043E056045 (03/28/2015) --- Russian cosmonaut Gennady Padalka of the Russian Federal Space Agency (Roscosmos) is first through the hatch of the Soyuz TMA-16M spacecraft into the International Space Station after launching from the Baikonur Cosmodrome in Kazakhstan. He is welcomed aboard by Expedition 43 Commander and NASA astronaut Terry Virts. Padalka will serve a normal length tour of duty on the station but his two crewmembers arriving with him, Russian cosmonaut Mikhail Kornienko and NASA astronaut Scott Kelly, will spend a year in space and return to Earth on Soyuz TMA-18M in March 2016.

ISS043E266841 (05/28/2015) --- Expedition 43 Commander and NASA astronaut Terry Virts sits is one of the hatchways aboard the International Space Station following the relocation of the Leonardo Permanent Multipurpose Module (PMM.) The PMM was relocated from the Unity node to the Tranquility node as the next step in preparing the International Space Station for the installation of new International Docking Adapters which will enable future U.S. commercial crew vehicles to dock to the station. Crew members typically wear personal protective devices (mask, glasses, gloves) whenever opening a hatch following dynamic operations as a precaution.

Expedition 42 crew members, Flight Engineer Terry Virts of NASA, left, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit up for their Soyuz launch to the International Space Station on Sunday, Nov. 23, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will send Shkaplerov, Virts, and Cristoforetti on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch in a Soyuz rocket with fellow crewmates, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), Sunday, Nov. 23, 2014 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 Kazakhstan time and will carry Virts, Shkaplerov, and Cristoforetti into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA is helped into his Russian Sokol suit as he and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), prepare for their Soyuz launch to the International Space Station, on Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts, Cristoforetti, and Shkaplerov into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 42 crew members, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), left, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), center, and Flight Engineer Terry Virts of NASA, right, prepare for pressure checks of their Sokol suits in Building 254 following their suit up for launch, Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts, Shkaplerov, and Cristoforetti into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz TMA-15M spacecraft on Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz TMA-15M spacecraft on Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA, left, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), right, receive the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to their launch on the Soyuz rocket to the International Space Station (ISS), Sunday, Nov. 23, 2014, in Baikonur, Kazakhstan. Virts, Shkaplerov, and Cristoforetti will spend the next five and a half months living and working aboard the ISS. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA is helped into his Russian Sokol suit as he and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), prepare for their Soyuz launch to the International Space Station, on Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts, Cristoforetti, and Shkaplerov into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 42 Flight Engineer Terry Virts of NASA gives a thumbs up while waiting for a pressure check of his Sokol suit in Building 254 following his suit up for launch, Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA, waves farewell to family and friends as he departs the Cosmonaut Hotel to suit up for the Soyuz launch to the International Space Station on Sunday, Nov. 23, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will send Virts, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz TMA-15M spacecraft on Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch in a Soyuz rocket with fellow crewmates, Flight Engineers Samantha Cristoforetti of the European Space Agency (ESA) and Terry Virts of NASA, Sunday, Nov. 23, 2014 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 Kazakhstan time and will carry Shkaplerov, Cristoforetti, and Virts into orbit to begin their five and a half month mission on the International Space Station. Photo Credit (NASA/Aubrey Gemignani)

Expedition 42 crew members, Flight Engineer Terry Virts of NASA, left, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), right, prepare for pressure checks of their Sokol suits in Building 254 following their suit up for launch, Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts, Shkaplerov, and Cristoforetti into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts (left), answers a question during a press conference on Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. He is seen with fellow crew member Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (right). Launch of the Soyuz rocket is scheduled for Nov. 24 and will carry Virts, Shkaplerov, and Flight Engineer Samantha Cristoforetti of the European Space Agency into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA waits for a pressure check of his Sokol suit in Building 254 following his suit up for launch, Sunday, Nov. 23, 2014, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will carry Virts and fellow crewmates, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 crew members, Flight Engineer Terry Virts of NASA, left, Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), center, and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit up for their Soyuz launch to the International Space Station on Sunday, Nov. 23, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will send Virts, Shkaplerov, and Cristoforetti on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Photo taken of night flight through U.S. Lab using only ambient light (no flash).

Expedition 42 prime crew members, Flight Engineer Terry Virts of NASA (left), Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (center), and Flight Engineer Samantha Cristoforetti (right) of the European Space Agency are seen during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Saturday, Nov. 22, 2014. The mission is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Renita Fincke, left, watches her husband, NASA astronaut Michael Fincke and Expedition 9 Flight Engineer depart from the crew bus while holding her 4 month-old baby Tarali Fincke, Sunday, October 24, 2004 in Star City, Russia. Astronaut Terry Virts helps by holding Chandra Fincke. Photo Credit: (NASA/Bill Ingalls)

Expedition 42 Flight Engineer, Terry Virts of NASA, speaks from behind glass, while in quarantine, during the State Commission meeting to approve the Soyuz launch of Expedition 42 to the International Space Station, Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The mission is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani

Expedition 42 Flight Engineer Terry Virts of NASA (left), Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (center), and Flight Engineer Samantha Cristoforetti (right) of the European Space Agency , wave as they are introduced during a press conference, Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The mission to the International Space Station is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA (left), Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (center), and Flight Engineer Samantha Cristoforetti of the European Space Agency (right), pose for a photo at the conclusion of the press conference, Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The mission to the International Space Station is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

NASA STS-130 crew pose with Winter Olympics medalist Apolo Ohno, center, at Nationals Park, Tuesday, April 20, 2010, in Washington. Pictured from left are STS-130 Mission Specialist Robert Benhken, Mission Specialist Nicholas Patrick, Commander George Zamka, Apolo Ohno, Mission Specialist Stephen Robinson, Mission Specialist Kathryn Hire and Pilot Terry Virts. Photo Credit: (NASA/Carla Cioffi)

Expedition 42 prime crew members, Flight Engineer Terry Virts of NASA (left), Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (center), and Flight Engineer Samantha Cristoforetti (right) of the European Space Agency are seen during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Saturday, Nov. 22, 2014. The mission is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Flight Engineer Terry Virts of NASA (left), Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) (center), and Flight Engineer Samantha Cristoforetti of the European Space Agency (right), pose for a photo at the conclusion of the press conference, Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The mission to the International Space Station is set to launch Nov. 24 from the Baikonur Cosmodrome. Photo Credit: (NASA/Aubrey Gemignani)

Renita Fincke, right, awaits the arrival of her husband NASA astronaut Michael Fincke, while holding their 4 month-old baby Tarali, Sunday, October 24, 2004, in Star City, Russia. Astronaut Terry Virts, Center helps by holding 2 year-old Chandra Fincke. Photo Credit: (NASA/Bill Ingalls)

Family visits with Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) through glass at the conclusion of the press conference, Saturday, Nov. 22, 2014, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Nov. 24 and will carry Shkaplerov, Flight Engineer Terry Virts of NASA , and Flight Engineer Samantha Cristoforetti of the European Space Agency into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) waves farewell to family and friends as he departs the Cosmonaut Hotel to suit up for the Soyuz launch to the International Space Station on Sunday, Nov. 23, 2014, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of Nov. 24 and will send Shkaplerov, Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA), and Flight Engineer Terry Virts of NASA on a five and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

The crew of STS-130 present the principal owner of the Washington Nationals, Debra Lerner Cohen (holding montage) with a montage of their mission, Tuesday, April 20, 2010 at Nationals Park in Washington. From left are seen Commander George Zamka, Mission Specialist Nicholas Patrick, Pilot Terry Virts, Debra Lerner Cohen, Edward Cohen, Mission Specialist Kathryn Hire, Mission Specialist Robert Behnken, Lauren Lerner, Jacob Lerner and Alan Gottlieb. Photo Credit: (NASA/Carla Cioffi)

ISS042E275158 (02/15/2015) --- US Astronaut Terry Virts tweeted this earth observation from the International Space Station on Feb. 15, 2015. Virts described the image as "#EarthArt northeast #Libya.

ISS042E256277 (02/14/2015) --- US Astronaut Terry Virts took this picture of Florida in the United States on Feb. 14, 2015 while he was on the International Space Station. Virts is a Flight Engineer with Expedition 42.

ISS042E254702 (02/12/2015) --- US Astronaut Terry Virts took this picture of the United States Gulf Coast on Feb. 12, 2015 while he was on the International Space Station. Virts is a Flight Engineer with Expedition 42.

STS-130 LAUNCH L-5 SUITED STA'S W/COMMANDER GEORGE ZAMKA & PILOT TERRY VIRTS

STS-130 LAUNCH L-5 SUITED STA'S W/COMMANDER GEORGE ZAMKA & PILOT TERRY VIRTS

STS-130 LAUNCH L-5 SUITED STA'S W/COMMANDER GEORGE ZAMKA & PILOT TERRY VIRTS

STS-130 LAUNCH L-5 SUITED STA'S W/COMMANDER GEORGE ZAMKA & PILOT TERRY VIRTS

JOHNSON SPACE CENTER, Houston - JSC2009-E-157219 - Astronaut Terry W. Virts Jr., pilot

Vertical Motion Simulator (VMS) Astronaut Terry Virts flying the shuttle during simulation flight

ISS042E237341 (02/09/2015) --- Twitter image from US Astronaut Terry Virts of the Red Sea in the Middle East on Feb. 09, 2015. Terry labeled it "earth art." Terry is a flight engineer of Expedition 42 on the International Space Station.

ISS042E019343 (12/01/2014) --- NASA astronaut Terry Virts took this night pass image as the International Space Station passed over the Houston Texas area.

JSC2014E088153 (10/23/2014) --- Offical Crew Photograph of US Astronaut Terry Virts (NASA) who is a Flight Engineer with Expedition 42 on the International Space Station.

ISS042E237302 (02/09/2015) --- Aboard the International Space Station on Feb. 9, 2015 NASA astronaut Terry Virts while viewing through the Cupola window captured this image of the African continent. Virts tweeted the photo to his many fans with the comment: "Sun glint on one of a thousand rivers in the heart of #Africa, this one in #Angola" .

ISS042E292494 (03/01/2015) --- U.S. astronauts Barry "Butch" Wilmore and Terry Virts performed three separate spacewalks to prepare the International Space Station for upcoming U.S. commercial spacecraft currently in development. Virts tweeted this image on March 1, 2015 with the comment "Still thinking about that #awesome #spacewalk yesterday with #AstroButch!"