A Russian doctor monitors Expedition 20 Flight Engineer Michael Barratt onboard a helicopter heading to Kustanay, Kazakhstan shortly after Barratt, Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue helicopters are seen out the window of another helicopter carrying Expedition 20 Flight Engineer Michael Barratt shortly after shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt signs an autograph inside a helicopter shortly after shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt signs the inside of his helicopter shortly after shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

A Russian Search and Rescue team All Terrain Vehicle (ATV) brings Expedition 20 Flight Engineer Michael Barratt to his helicopter shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian medical personnel monitor Expedition 20 Flight Engineer Michael Barratt onboard a helicopter heading to Kustanay, Kazakhstan shortly after Barratt, Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Astronaut Sunita WIlliams, left, talks with Expedition 20 Flight Engineer Michael Barratt onboard a helicopter shortly after shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt is carried in a chair to the medical tent shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt is helped out of a Russian Search and Rescue helicopter after a two hour helicopter flight from the Soyuz TMA-14 landing site to Kustanay, kazakhstan on Sunday, Oct. 11, 2009. Barratt, Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan. Padalka and Barratt are returned from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Commander Gennady Padalka is carried in a chair to the medical tent shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Flight Engineer Michael Barratt landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt rests in a chair shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt rests in a chair and is checked by medical personnel shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

A Russian Search and Rescue team All Terrain Vehicle (ATV) brings Expedition 20 Flight Engineer Michael Barratt to his helicopter shortly after he and Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt rests in a chair shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt rests in a chair shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Empty chairs outside the Soyuz Capsule await Spaceflight participant Guy Laliberté, Expedition 20 Commander Gennady Padalka, and Expedition 20 Flight Engineer Michael Barratt just minutes after they landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Spaceflight participant Guy Laliberté is carried in a chair to the medical tent shortly after he and Expedition 20 Flight Engineer Michael Barratt, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt rests in a chair shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Commander Gennady Padalka landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

A member of the Russian Search and Rescue team folds up the parachute that was used to during the landing of the Soyuz TMA-14 spacecraft with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue team All Terrain Vehicles (ATVs) are seen parked at the landing site of the Soyuz TMA-14 capsule that carried Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

NASA Flight Surgeon Ed Powers, left, laughs as Expedition 20 Flight Engineer Michael Barratt talks about how strange, weight and gravity feel when holding a bottle of water shortly after Barratt, Expedition 20 Commander Gennady Padalka, and spaceflight participant Guy Laliberté landed their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-14 spacecraft is seen as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Seated left to right, Spaceflight participant Guy Laliberté, Expedition 20 Commander Gennady Padalka, Expedition 20 Flight Engineer Michael Barratt sit in chairs outside the Soyuz Capsule just minutes after they landed near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Commander Gennady Padalka is helped of the Soyuz capsule shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Flight Engineer Michael Barratt landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Flight Engineer Michael Barratt, left, and Expedition 20 Commander Gennady Padalka, right, are carried in chairs to the medical tent shortly after they and Spaceflight participant Guy Laliberté landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Seated left to right, Spaceflight participant Guy Laliberté, Expedition 20 Commander Gennady Padalka, Expedition 20 Flight Engineer Michael Barratt sit in chairs outside the Soyuz Capsule just minutes they landed near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 20 Commander Gennady Padalka rests in a chair shortly after he and Spaceflight participant Guy Laliberté, and Expedition 20 Flight Engineer Michael Barratt landed in their Soyuz TMA-14 capsule near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue force vehicles and helicopter arrive within seconds of the Soyuz TMA-14 spacecraft landing with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue force vehicles follow the Soyuz TMA-14 spacecraft as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue force vehicles and helicopter arrive within seconds of the Soyuz TMA-14 spacecraft landing with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue force vehicles and helicopter arrive within seconds of the Soyuz TMA-14 spacecraft landing with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

A Russian Search and Rescue force helicopter flies around the Soyuz TMA-14 spacecraft as it lands with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue force vehicles and helicopter arrive within seconds of the Soyuz TMA-14 spacecraft landing with Expedition 20 Commander Gennady Padalka, Flight Engineer Michael Barratt, and spaceflight participant Guy Laliberté near the town of Arkalyk, Kazakhstan on Sunday, Oct. 11, 2009. Padalka and Barratt are returning from six months onboard the International Space Station, along with Laliberté who arrived at the station on Oct. 2 with Expedition 21 Flight Engineers Jeff Williams and Maxim Suraev aboard the Soyuz TMA-16 spacecraft. Photo Credit: (NASA/Bill Ingalls)

ISS020-E-050725 (8 Oct. 2009) --- NASA astronaut Jeffrey Williams (foreground), Expedition 21 flight engineer and Expedition 22 commander, uses a communication system in the Kibo laboratory of the International Space Station. Also pictured clockwise are NASA astronaut Michael Barratt (bottom), Expedition 20 flight engineer; European Space Agency astronaut Frank De Winne, Expedition 20 flight engineer and Expedition 21 commander; spaceflight participant Guy Laliberte; Canadian Space Agency astronaut Robert Thirsk, Expedition 20/21 flight engineer; and Russian cosmonaut Gennady Padalka, Expedition 20 commander.

ISS020-E-005055 (29 May 2009) --- Cosmonaut Gennady Padalka (right), Expedition 19/20 commander, welcomes cosmonaut Roman Romanenko, Expedition 20/21 flight engineer, after Romanenko arrived onboard a Soyuz TMA-15 spacecraft with European Space Agency astronaut Frank De Winne (out of frame) and Canadian Space Agency astronaut Robert Thirsk (out of frame), both flight engineers. The crew launched from the Baikonur Cosmodrome in Kazakhstan at 5:34 a.m. (CDT), May 27, 2009, and arrived at the station at 7:34 a.m. (CDT) on May 29, beginning Expedition 20 and six-person crew operations.

ISS020-E-005050 (29 May 2009) --- Cosmonaut Gennady Padalka (right), Expedition 19/20 commander, welcomes Canadian Space Agency astronaut Robert Thirsk, Expedition 20/21 flight engineer, after Thirsk arrived onboard a Soyuz TMA-15 spacecraft with European Space Agency astronaut Frank De Winne (out of frame) and cosmonaut Roman Romanenko (out of frame), both flight engineers. The crew launched from the Baikonur Cosmodrome in Kazakhstan at 5:34 a.m. (CDT), May 27, 2009, and arrived at the station at 7:34 a.m. (CDT) on May 29, beginning Expedition 20 and six-person crew operations.

ISS020-E-008884 (14 June 2009) --- Cosmonaut Gennady Padalka (center), Expedition 19/20 commander; along with NASA astronaut Michael Barratt (left) and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, both Expedition 19/20 flight engineers, pose for a photo in the Harmony node of the International Space Station.

ISS020-E-008879 (14 June 2009) --- Cosmonaut Gennady Padalka (center), Expedition 19/20 commander; along with NASA astronaut Michael Barratt (left) and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, both Expedition 19/20 flight engineers, pose for a photo in the Harmony node of the International Space Station.

ISS020-E-005049 (29 May 2009) --- Canadian Space Agency astronaut Robert Thirsk, Expedition 20 flight engineer, ingresses the International Space Station after arriving onboard a Soyuz TMA-15 spacecraft with European Space Agency astronaut Frank De Winne (out of frame) and cosmonaut Roman Romanenko (out of frame), both flight engineers. The crew launched from the Baikonur Cosmodrome in Kazakhstan at 5:34 a.m. (CDT), May 27, 2009, and arrived at the station at 7:34 a.m. (CDT) on May 29, beginning Expedition 20 and six-person crew operations.

ISS020-E-046849 (5 Oct. 2009) --- Crew members on the International Space Station pose for a group photo following a joint crew news conference in the Harmony node of the International Space Station. Pictured from the left (front row) are European Space Agency astronaut Frank De Winne, Expedition 20 flight engineer and Expedition 21 commander; spaceflight participant Guy Laliberte; Russian cosmonaut Gennady Padalka, Expedition 19/20 commander; and NASA astronaut Michael Barratt, Expedition 19/20 flight engineer. From the left (middle row) are Russian cosmonaut Roman Romanenko, Expedition 20/21 flight engineer; NASA astronaut Jeffrey Williams, Expedition 21 flight engineer and Expedition 22 commander; and Russian cosmonaut Maxim Suraev, Expedition 21/22 flight engineer. Pictured on the back row are NASA astronaut Nicole Stott and Canadian Space Agency astronaut Robert Thirsk, both Expedition 20/21 flight engineers.

ISS020-E-008898 (14 June 2009) --- The six-person Expedition 20 crew poses in "star-burst" formation for an in-flight portrait in the Harmony node of the International Space Station. Pictured clockwise from right (center) are cosmonaut Gennady Padalka, commander; Canadian Space Agency astronaut Robert Thirsk, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, NASA astronaut Michael Barratt, cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

S127-E-009733 (28 July 2009) --- The STS-127 and Expedition 20 crew members pose for a group portrait in the Harmony node of the International Space Station while the Space Shuttle Endeavour remains docked with the station. Pictured from the left (front row) are NASA astronauts Michael Barratt, Expedition 20 flight engineer; Mark Polansky, STS-127 commander; cosmonaut Gennady Padalka, Expedition 20 commander; and NASA astronaut Dave Wolf, STS-127 mission specialist. Pictured from the left (middle row) are Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, STS-127 mission specialist; Canadian Space Agency astronauts Julie Payette, STS-127 mission specialist; and Robert Thirsk, Expedition 20 flight engineer; and NASA astronaut Tom Marshburn, STS-127 mission specialist. Pictured from the left (back row) are cosmonaut Roman Romanenko, Expedition 20 flight engineer; NASA astronauts Christopher Cassidy, STS-127 mission specialist; Doug Hurley, STS-127 pilot; Tim Kopra, Expedition 20 flight engineer; and European Space Agency astronaut Frank De Winne, Expedition 20 flight engineer.

ISS020-E-008891 (14 June 2009) --- The six-person Expedition 20 crew poses for an in-flight portrait in the Harmony node of the International Space Station. Pictured from the left (front row) are Canadian Space Agency astronaut Robert Thirsk, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, both flight engineers; and cosmonaut Gennady Padalka, commander. From the left (back row) are NASA astronaut Michael Barratt, cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

ISS020-E-008893 (14 June 2009) --- The six-person Expedition 20 crew poses for an in-flight portrait in the Harmony node of the International Space Station. Pictured from the left (front row) are Canadian Space Agency astronaut Robert Thirsk, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, both flight engineers; and cosmonaut Gennady Padalka, commander. From the left (back row) are NASA astronaut Michael Barratt, cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

S127-E-009741 (28 July 2009) --- After 11 days of cooperative work onboard the International Space Station and Space Shuttle Endeavour, the STS-127 and Expedition 20 crew members bid farewell to each other prior to the undocking of the two spacecraft. Pictured in the foreground are Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata (left), STS-127 mission specialist; cosmonaut Gennady Padalka, Expedition 20 commander; NASA astronaut Mark Polansky, STS-127 commander; and NASA astronaut Tim Kopra, Expedition 20 flight engineer. Pictured in the background are cosmonaut Roman Romanenko, NASA astronaut Michael Barratt and European Space Agency astronaut Frank De Winne, all Expedition 20 flight engineers. Undocking occurred at 12:26 p.m. (CDT) on July 28, 2009.

ISS020-E-005086 (30 May 2009) --- The Expedition 20 crew members share a meal in the Unity node of the International Space Station. Pictured (from the left, clockwise) are Canadian Space Agency astronaut Robert Thirsk, European Space Agency astronaut Frank De Winne, both flight engineers; cosmonaut Gennady Padalka, commander; cosmonaut Roman Romanenko, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata and NASA astronaut Michael Barratt, all flight engineers.

ISS020-E-005082 (30 May 2009) --- The Expedition 20 crew members share a meal in the Unity node of the International Space Station. Pictured (from the left, clockwise) are Canadian Space Agency astronaut Robert Thirsk, European Space Agency astronaut Frank De Winne, both flight engineers; cosmonaut Gennady Padalka, commander; cosmonaut Roman Romanenko, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata and NASA astronaut Michael Barratt, all flight engineers.

Expedition 27 Flight Engineer Cady Coleman is helped out of the Spyuz TMA-20 spacecraft shortly after she and Commander Dmitry Kondratyev and Paolo Nespoli landed southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 Commander Dmitry Kondratyev is helped out of the Spyuz TMA-20 spacecraft shortly after he and Flight Engineers Cady Coleman and Paolo Nespoli landed southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 27 Flight Engineer Cady Coleman peeks out of a window of the Soyuz TMA-20 spacecraft shortly after she and Commander Dmitry Kondratyev and Flight Engineer Paolo Nespoli landed southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20 spacecraft is seen as it lands with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

ISS020-E-015150 (26 June 2009) --- One of the Expedition 20 crew members aboard the International Space Station photographed this image of a crescent moon on June 26, 2009. Part of a solar panel on the orbital outpost in the foregrund appears out of focus due to its close range to the camera.

ISS020-E-026767 (31 July 2009) --- NASA astronaut Tim Kopra (left), European Space Agency astronaut Frank De Winne, cosmonaut Roman Romanenko and NASA astronaut Michael Barratt, all Expedition 20 flight engineers, share a meal at a galley in the Unity node of the International Space Station.

ISS020-E-029740 (10 Aug. 2009) --- Canadian Space Agency astronaut Robert Thirsk (left), European Space Agency astronaut Frank De Winne and cosmonaut Roman Romanenko, all Expedition 20 flight engineers, pose for an in-flight portrait in the Harmony node of the International Space Station.

ISS020-E-018161 (10 July 2009) --- Canadian Space Agency astronaut Robert Thirsk, Expedition 20 flight engineer, uses a communication system in the Harmony node of the International Space Station. Also pictured are cosmonauts Gennady Padalka, commander, and Roman Romanenko (back to camera), flight engineer.

ISS020-E-018162 (10 July 2009) --- Canadian Space Agency astronaut Robert Thirsk, Expedition 20 flight engineer, uses a communication system in the Harmony node of the International Space Station. Also pictured are cosmonauts Gennady Padalka (left foreground), commander, and Roman Romanenko, flight engineer.

Russian support personnel work to help get crew members out of the Soyuz TMA-20 spacecraft shortly after the capsule landed with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue and other recovery teams begin to gather around the Soyuz TMA-20 spacecraft immediately after it landed with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman onboard in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

Russian support personnel work to help get crew members out of the Soyuz TMA-20 spacecraft shortly after the capsule landed with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

Recovery teams move a work stand around the Soyuz TMA-20 spacecraft immediately after it landed with Expedition 27 Commander Dmitry Kondratyev and Flight Engineers Paolo Nespoli and Cady Coleman onboard in a remote area southeast of the town of Zhezkazgan, Kazakhstan, on Tuesday, May 24, 2011. NASA Astronaut Coleman, Russian Cosmonaut Kondratyev and Italian Astronaut Nespoli are returning from more than five months onboard the International Space Station where they served as members of the Expedition 26 and 27 crews. Photo Credit: (NASA/Bill Ingalls)

ISS020-E-029709 (10 Aug. 2009) --- Expedition 20 crew members pose for an in-flight portrait in the Harmony node of the International Space Station. Pictured from the left (front row) are Canadian Space Agency astronaut Robert Thirsk and NASA astronaut Michael Barratt, both flight engineers; along with cosmonaut Gennady Padalka, commander. From the left (back row) are NASA astronaut Tim Kopra, cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

ISS020-E-029752 (10 Aug. 2009) --- Expedition 20 crew members pose in "star-burst" formation for an in-flight portrait in the Harmony node of the International Space Station. Pictured clockwise from the bottom (center) are cosmonaut Gennady Padalka, commander; NASA astronaut Tim Kopra, Canadian Space Agency astronaut Robert Thirsk, cosmonaut Roman Romanenko, European Space Agency astronaut Frank De Winne and NASA astronaut Michael Barratt, all flight engineers.

ISS020-E-037191 (30 Aug. 2009) --- Four of the 13 crew members onboard the International Space Station are pictured in the Harmony node while Space Shuttle Discovery remains docked with the station. From the left are NASA astronaut Kevin Ford, STS-128 pilot; European Space Agency astronaut Christer Fuglesang (mostly obscured behind Ford), NASA astronauts Jose Hernandez and Nicole Stott, all mission specialists; along with NASA astronaut Michael Barratt, Expedition 20 flight engineer.

ISS020-E-007188 (7 June 2009) --- Expedition 20 crew members share a meal in the Unity node of the International Space Station. Pictured from the left are Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, flight engineer; cosmonaut Gennady Padalka, commander; cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, both flight engineers.

ISS020-E-029759 (10 Aug. 2009) --- Expedition 20 crew members give a “thumbs-up” signal as they pose in "star-burst" formation for an in-flight portrait in the Harmony node of the International Space Station. Pictured clockwise from the bottom (center) are cosmonaut Gennady Padalka, commander; NASA astronaut Tim Kopra, Canadian Space Agency astronaut Robert Thirsk, cosmonaut Roman Romanenko, European Space Agency astronaut Frank De Winne and NASA astronaut Michael Barratt, all flight engineers.

ISS020-E-044000 (1 Oct. 2009) --- Expedition 20 crew members pose for an in-flight crew photo in the Harmony node of the International Space Station. Pictured clockwise are Russian cosmonaut Gennady Padalka (bottom center), commander; Russian cosmonaut Roman Romanenko, NASA astronaut Nicole Stott, Canadian Space Agency astronaut Robert Thirsk, European Space Agency astronaut Frank De Winne and NASA astronaut Michael Barratt, all flight engineers.

ISS020-E-017734 (4 July 2009) --- Expedition 20 crew members share a meal at the galley in the Zvezda Service Module of the International Space Station. Pictured (from the left) are cosmonauts Roman Romanenko, flight engineer, and Gennady Padalka, commander; along with Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata and NASA astronaut Michael Barratt, both flight engineers.

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

PHOTO DATE: 04-20-09 LOCATION: Bldg 9NW, ISS Mockup, Airlock SUBJECT: Preflight Coverage, STS 128 & Expedition 20 crews training in ISS Airlock mockup, Bldg 9NW PHOTOGRAPHER: BLAIR

ISS020-E-043967 (1 Oct. 2009) --- Expedition 20 crew members pose for an in-flight crew photo in the Harmony node of the International Space Station. On the front row are Russian cosmonaut Gennady Padalka (center), commander; along with Canadian Space Agency astronaut Robert Thirsk (left) and NASA astronaut Michael Barratt, both flight engineers. Pictured from the left (back row) are NASA astronaut Nicole Stott, Russian cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

ISS020-E-043966 (1 Oct. 2009) --- Expedition 20 crew members pose for an in-flight crew photo in the Harmony node of the International Space Station. On the front row are Russian cosmonaut Gennady Padalka (center), commander; along with Canadian Space Agency astronaut Robert Thirsk (left) and NASA astronaut Michael Barratt, both flight engineers. Pictured from the left (back row) are NASA astronaut Nicole Stott, Russian cosmonaut Roman Romanenko and European Space Agency astronaut Frank De Winne, all flight engineers.

View from the balcony of the Russian Mission Control Center in Korolev, Russia as the Soyuz TMA-20 nears the International Space Station on Saturday, Dec. 18, 2010. The Soyuz TMA-20 docked to the International Space Station carrying Expedition 26 Soyuz Commander Dmitry Kondratyev, Flight Engineer Catherine Coleman and European Space Agency Flight Engineer Paolo Nespoli. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-20 spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome, Monday, Dec. 13, 2010, in Kazakhstan. The launch of the Soyuz spacecraft with Expedition 26 Soyuz Commander Dmitry Kondratyev, NASA Flight Engineer Catherine Coleman, and Italian astronaut Paolo Nespoli is scheduled for Thursday, Dec., 16, 2010 at 1:09 a.m. local time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-20 spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome, Monday, Dec. 13, 2010, in Kazakhstan. The launch of the Soyuz spacecraft with Expedition 26 Soyuz Commander Dmitry Kondratyev, NASA Flight Engineer Catherine Coleman, and Italian astronaut Paolo Nespoli is scheduled for Thursday, Dec., 16, 2010 at 1:09 a.m. local time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-20 spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome, Monday, Dec. 13, 2010, in Kazakhstan. The launch of the Soyuz spacecraft with Expedition 26 Soyuz Commander Dmitry Kondratyev, NASA Flight Engineer Catherine Coleman, and Italian astronaut Paolo Nespoli is scheduled for Thursday, Dec., 16, 2010 at 1:09 a.m. local time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-20 spacecraft is seen shortly after arrival to the launch pad Monday, Dec. 13, 2010 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz is scheduled to launch the crew of Expedition 26 on Thursday, Dec. 16, 2010 at 1:09 a.m. local time. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-20 spacecraft is seen shortly after arrival to the launch pad Monday, Dec. 13, 2010 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz is scheduled to launch the crew of Expedition 26 on Thursday, Dec. 16, 2010 at 1:09 a.m. local time. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-20 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Thursday, December 16, 2010 carrying Expedition 26 Soyuz Commander Dmitry Kondratyev of Russia, NASA Flight Engineer Catherine Coleman and European Space Agency astronaut Paolo Nespoli to the International Space Station. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-20 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Thursday, December 16, 2010 carrying Expedition 26 Soyuz Commander Dmitry Kondratyev of Russia, NASA Flight Engineer Catherine Coleman and European Space Agency astronaut Paolo Nespoli to the International Space Station. (Photo Credit: NASA/Carla Cioffi)