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

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.

ISS043E198419 (05/15/2015) --- NASA astronauts Scott Kelly (left) and Terry Virts (right) share a snack while inside the station’s Unity module which holds the food and drink supply for the U.S. segment of the International Space Station.

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

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.

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.

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.

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"!

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.

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.

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.

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.

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”.

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.

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.

ISS042E098993 (01/04/2015) --- Expedition 43 commander and NASA astronaut Terry Virts tweeted this image showcasing his support of America’s pastime back on Jan. 4, 2015 with this comment: Honoring #JackieRobinson today! #42.

Flight engineer Terry Virts, Extravehicular crewmember 2 (EV2), translates External Stowage Platform 2 (ESP2) at the close of Extravehicular Activity 29 (EVA 29). An orbital sunrise provides the backdrop for this image, which was released by Virts on Twitter.

S130-E-006543 (9 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, occupies the commander’s station on the flight deck of space shuttle Endeavour during flight day two activities.

S130-E-008506 (15 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, shaves his face at a mirror on the middeck of the space shuttle Endeavour while docked with the International Space Station.

S130-E-005198 (8 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, occupies the pilot’s station on the flight deck of space shuttle Endeavour during flight day one activities.

S130-E-006308 (9 Feb. 2010) --- Astronaut Terry Virts, STS-130 pilot, is pictured on the middeck of the Earth-orbiting space shuttle Endeavour during the early hours of flight day two.

S130-E-008484 (15 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, floats freely on the middeck of space shuttle Endeavour while docked with the International Space Station.

S130-E-006317 (9 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, holds a video camera on the middeck of space shuttle Endeavour during flight day two activities.

S130-E-007171 (11 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, poses for a photo near a container of tools floating freely in the Kibo laboratory of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-008276 (15 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, is pictured near food packages and scissors floating freely on the middeck of space shuttle Endeavour while docked with the International Space Station.

ISS043E188795 (05/12/2015) --- Expedition 43 commander and NASA astronaut Terry Virts shows off a special suit for his preparation process to return to Earth later. Virts tweeted this image with an explanation of the suits purpose on May 12, 2015: “Our "Penguin (пингвин)" suit- it compresses you, to get your body ready for the return to gravity".

ISS042E283203 (02/21/2015) – NASA astronaut Terry Virts Flight Engineer of Expedition 42 on the International Space Station is seen working to complete a cable routing task while the sun begins to peak over the Earth’s horizon on Feb. 21 2015. Virts and fellow astronaut Barry “Butch” Wilmore completed a 6-hour, 41-minute spacewalk routing more than 300 feet of cable as part of a reconfiguration of the station to enable U.S. commercial crew vehicles under development to dock to the space station in the coming years.

S130-E-006870 (10 Feb. 2010) --- NASA astronauts Terry Virts, STS-130 pilot; and Kathryn Hire, mission specialist, are pictured on the middeck of space shuttle Endeavour while docked with the International Space Station.

S130-E-007850 (14 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, works in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-008469 (15 Feb. 2010) --- NASA astronauts George Zamka (right), STS-130 commander; and Terry Virts, pilot, are pictured on the middeck of space shuttle Endeavour while docked with the International Space Station.

S130-E-008088 (15 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, works at a robotic workstation in the Destiny laboratory of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-007791 (13 Feb. 2010) --- NASA astronauts Terry Virts (left), STS-130 pilot; and Stephen Robinson, mission specialist, are pictured on the middeck of space shuttle Endeavour while docked with the International Space Station.

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

S130-E-008077 (15 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, is pictured floating freely in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-008807 (16 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, floats through a hatch between the Unity and Tranquility nodes of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-005320 (8 Feb. 2010) --- NASA astronauts George Zamka (left background), STS-130 commander; Terry Virts (right), pilot; and Stephen Robinson, mission specialist, are pictured on the flight deck of space shuttle Endeavour during flight day one activities.

S130-E-007780 (14 Feb. 2010) --- NASA astronauts Terry Virts (right), STS-130 pilot; and Stephen Robinson, mission specialist, are pictured in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

ISS043E182212 (05/08/2015) --- NASA astronaut and Expedition 43 commander Terry Virts takes a drink of his very first milkshake onboard the International Space Station.

ISS043E276537 (05/31/2015) --- Expedition 43 Commander and NASA astronaut Terry Virts creates a sphere of bubbles in the station’s microgravity environment using drinking water and an antacid tablet.

ISS042E016676 (11/27/2014) --- Expedition 42 Commander Barry Wilmore of NASA, Flight Engineer Samantha Cristoforetti of the European Space Agency and Flight Engineer Terry Virts of NASA (left to right) are living and working on the International Space Station, performing hundreds of research investigations and maintaining the orbital laboratory.

ISS022-E-067704 (17 Feb. 2010) --- NASA astronauts Kathryn Hire, STS-130 mission specialist; and Terry Virts, pilot, work in the Tranquility node and its Cupola of the International Space Station while space shuttle Endeavour remains docked with the station.

ISS022-E-067703 (17 Feb. 2010) --- NASA astronauts Kathryn Hire, STS-130 mission specialist; and Terry Virts, pilot, work in the Tranquility node and its Cupola of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-007777 (14 Feb. 2010) --- NASA astronauts Terry Virts (right), STS-130 pilot; Nicholas Patrick (left) and Stephen Robinson, both mission specialists, are pictured in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-007778 (14 Feb. 2010) --- NASA astronauts Terry Virts (right), STS-130 pilot; Nicholas Patrick (left) and Stephen Robinson, both mission specialists, are pictured in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-008319 (15 Feb. 2010) --- NASA astronauts George Zamka (right), STS-130 commander; Terry Virts, pilot; and T.J. Creamer (background), Expedition 22 flight engineer, work in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

ISS042E082884 (12/27/2014) --- Expedition 42 Flight Engineer Terry Virts of NASA straps into the station’s stationary exercise bicycle known as the Cycle Ergometer with Vibration Isolation System (CEVIS). Each crew member spends an average of 2.5 hours a day exercising to combat the negative effects of prolonged weightlessness by maintaining bone and muscle mass and cardiovascular health.

S130-E-007632 (13 Feb. 2010) --- NASA astronauts Jeffrey Williams (center), Expedition 22 commander; Terry Virts (left), STS-130 pilot; and Nicholas Patrick, STS-130 mission specialist, work in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-007098 (11 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, exercises using the advanced Resistive Exercise Device (aRED) in the Unity node of the International Space Station while space shuttle Endeavour remains docked with the station. Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, Expedition 22 flight engineer, is in the background.

ISS042E017804 (11/28/2014) --- US Astronaut Terry Virts works to rotate out the Optics Bench during Combustion Integrated Rack (CIR) Imaging Package reconfiguration in the Destiny U.S. Laboratory of the International Space Station.

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.

ISS043E087403 (04/06/2015) --- NASA astronauts Terry Virts (left) and Scott Kelly are seen here inside the station’s Quest airlock. The pair were performing routine maintenance activities on two of the International Space Station’s Extravehicular Mobility Units (EMU,) or spacesuits, seen in the background.

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

S130-E-006971 (10 Feb. 2010) --- NASA astronauts Terry Virts (bottom), STS-130 pilot; Nicholas Patrick (right) and Robert Behnken, both STS-130 mission specialists; along with Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi (top), Expedition 22 flight engineer, are pictured in the Quest airlock of the International Space Station while space shuttle Endeavour remains docked with the station.

S130-E-006970 (10 Feb. 2010) --- NASA astronauts Terry Virts (bottom), STS-130 pilot; Nicholas Patrick (right) and Robert Behnken, both STS-130 mission specialists; along with Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi (top), Expedition 22 flight engineer, are pictured in the Quest airlock of the International Space Station while space shuttle Endeavour remains docked with the station. An empty Extravehicular Mobility Unit (EMU) spacesuit is at left.

S130-E-007783 (14 Feb. 2010) --- NASA astronauts Terry Virts (bottom), STS-130 pilot; Stephen Robinson (top right), STS-130 mission specialist; and Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, Expedition 22 flight engineer, are pictured in the newly-installed Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

ISS022-E-066964 (17 Feb. 2010) --- NASA astronauts Terry Virts (left), STS-130 pilot; and Jeffrey Williams, Expedition 22 commander, pose for a photo near the windows in the newly-installed Cupola of the International Space Station while space shuttle Endeavour remains docked with the station.

PHOTO DATE: 09-26-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 43 crew member Terry Virts during Red Dragon cinema camera training with instructor Mark Turner. PHOTOGRAPHER: BILL STAFFORD

PHOTO DATE: 09-26-14 LOCATION: Bldg. 9NW - ISS Mockups SUBJECT: Expedition 43 crew member Terry Virts during Red Dragon cinema camera training with instructor Mark Turner. PHOTOGRAPHER: BILL STAFFORD

ISS022-E-066976 (17 Feb. 2010) --- NASA astronauts Terry Virts (left), STS-130 pilot; and Stephen Robinson, mission specialist, pose for a photo near the windows in the newly-installed Cupola of the International Space Station while space shuttle Endeavour remains docked with the station.

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)

All six Expedition 43 crewmembers are gathered in the Destiny laboratory on board the International Space Station on Mar 30, 2015 after an emergency procedures training period. The six members include Russian cosmonauts Mikhail Kornienko, Anton Shkaplerov, Gennady Padalka, NASA Astronaut Scott Kelly, ESA (European Space Agency) astronaut Samantha Cristoforetti, and Expedition 43 commander US astronaut Terry Virts.

ISS043E099306 (04/09/2015) --- NASA astronauts Terry Virts (bottom) and Scott Kelly (top) are seen here inside the Destiny Laboratory performing eye exams as part of ongoing studies into crew vision health. Vision changes in astronauts spending long periods of time in microgravity is a critical health issue that scientists are looking to solve as humanity prepares to travel to destinations far outside our planet like an asteroid and Mars.

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).

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).

ISS043E256577 (05/26/2015) --- Expedition 43 commander and NASA astronaut Terry Virts is seen here closing the hatch to the Leonardo Permanent Multipurpose Module (PMM.) The PMM was moved on May 27, 2015 from the Unity node to the Tranquility node. This freed up a docking port on the Earth-facing side of Unity for visiting cargo vehicles and was the latest activity in the ongoing upgrades to the station to prepare for future U.S. commercial crew vehicles.

ISS043E069815 (03/30/2015) --- All six Expedition 43 crewmembers are gathered in the Destiny laboratory on board the International Space Station on Mar 30, 2015 after an emergency procedures training period. The six members include Russian cosmonauts Mikhail Kornienko (top left), Anton Shkaplerov, Gennady Padalka, NASA Astronaut Scott Kelly, ESA (European Space Agency) astronaut Samantha Cristoforetti (bottom left), and Expedition 43 commander US astronaut Terry Virts.

S130-E-012323 (19 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, works on the aft flight deck of space shuttle Endeavour during flight day 13 activities.

S130-E-012377 (19 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, looks through an overhead window on the aft flight deck of space shuttle Endeavour during flight day 13 activities.

S130-E-012350 (19 Feb. 2010) --- NASA astronaut Terry Virts, STS-130 pilot, looks through an overhead window on the aft flight deck of space shuttle Endeavour during flight day 13 activities.

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.

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.

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.

ISS042E262032 (02/10/2015) --- Expedition 42 Commander Barry Wilmore of NASA (right to left), Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) and Flight Engineer Terry Virts of NASA on the International Space Station are preparing for the departure of the Dragon supply spacecraft on Feb. 10, 2015. In this picture Astronaut Cristoforetti points to the SpaceX CRS-5 Dragon patch.

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.

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".

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).

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.

ISS043E019025 (03/18/2015) --- Safety training never ends onboard the International Space Station. This photo in the U.S. Laboratory on Mar. 18, 2015 was taken during Emergency Egress Drill On-Board Training (OBT) with the Expedition 43 crew. Russian cosmonaut Mikhail Kornienko (rear) and ESA (European Space Agency) astronaut Samantha Cristoforetti (middle), both flight engineers, are shown with astronaut Terry Virts, Commander (front) during the important emergency drill.

iss042e015971 (11/26/2011) --- NASA astronauts Barry Wilmore and Terry Virts are photographed during operations to install the Cyclops launch platform on the Japanese Experiment Module Airlock (JEMAL) slide table. The Cyclops platform, also known as the Space Station Integrated Kinetic Launcher for Orbital Payload Systems (SSIKLOPS), holds and ejects nanosatellites from outside the ISS.

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)