
The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

In this black and white infrared image, the Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

In this long exposure photograph, the Soyuz MS-09 rocket is seen as it is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is seen as the gantry arms are lowered prior to launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is seen as the gantry arms are lowered prior to launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched at 7:12am EDT (5:12pm Baikonur time) and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 backup crew member Anne McClain of NASA is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, left, flight engineer Serena Auñón-Chancellor of NASA, second from left, and backup crew member Oleg Kononenko of Roscosmos are seen as they enter prior to the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 backup crew member David Saint-Jacques of the Canadian Space Agency is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Prokopyev, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018. Auñón-Chancellor, Soyuz Commander Sergey Prokopyev of Roscosmos, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

NASA International Space Station Program Manager Kirk Shireman is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency) is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Gerst, Soyuz Commander Sergey Prokopyev of Roscosmos, and Serena Auñón-Chancellor of NASA are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Prokopyev, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Dmitry Rogozin, Director General of Roscosmos, is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

U.S. Ambassador to Russia Jon Huntsman Jr. is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e004728 (Nov. 14, 20178) --- Roscosmos cosmonaut Oleg Artemyev is pictured in a Sokol launch and entry suit at the Gagarin Cosmonaut Training Center. Artemyev launched to the International Space Station as an Expedition 55-56 crew member.

jsc2017e137827_alt (Nov. 14, 2017) --- Portrait of NASA astronaut and Expedition 56 Commander Drew Feustel attired in his Sokol launch and entry suit at the Gagarin Cosmonaut Training Center in Star City, Russia.

jsc2018e038857 (Jan. 22, 2018) --- Portrait of NASA astronaut and Expedition 56-57 Flight Engineer Serena Auñón-Chancellor attired in her Sokol launch and entry suit at the Gagarin Cosmonaut Training Center in Star City, Russia.

jsc2017e137826_alt (Nov. 14, 2017) --- Portrait of NASA astronaut and Expedition 55-56 Flight Engineer Ricky Arnold attired in his Sokol launch and entry suit at the Gagarin Cosmonaut Training Center in Star City, Russia.

Expedition 56 backup crew member David Saint-Jacques of the Canadian Space Agency takes a selfie as the Soyuz rocket arrives as the launch pad after being rolled out by train, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

ESA (European Space Agency) Director General Johann-Dietrich Wörner is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

U.S. Ambassador to Russia Jon Huntsman Jr. is interviewed by NASA Public Affairs Officer Rob Navias after the completion of the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

U.S. Ambassador to Russia Jon Huntsman Jr. is interviewed by NASA Public Affairs Officer Rob Navias after the completion of the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, left, and flight engineer Alexander Gerst of ESA (European Space Agency) are seen during a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e038855 (Jan. 22, 2018) --- European Space Agency (ESA) Astronaut Alexander Gerst is pictured in a Sokol launch and entry suit at the Gagarin Cosmonaut Training Center. Gerst launched to the International Space Station as an Expedition 56-57 crew member.

jsc2018e038854 (November 14, 2017) --- Expedition 56-57 crew members (from left) Serena Auñón-Chancellor of NASA, Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency) pose for a crew portrait in Sokol launch and entry suits at the Gagarin Cosmonaut Training Center in Star City, Russia.

iss056e055758 (June 29, 2018) --- The Soyuz MS-09 spacecraft is pictured docked to the Rassvet module of the International Space Station's Russian segment. The Soyuz MS-09 launched Expedition 56-57 crew members Serena Auñón-Chancellor, Alexander Gerst and Sergey Prokopyev to the station on June 6, 2018 and docked on June 8.

jsc2018e004729 (November 14, 2017) --- Expedition 55-56 crew members (from left) Ricky Arnold of NASA, Oleg Artemyev of Roscosmos and Drew Feustel of NASA pose for a crew portrait in Sokol launch and entry suits at the Gagarin Cosmonaut Training Center in Star City, Russia.

Expedition 56 backup crew members Anne McClain of NASA, left, Oleg Kononenko of Roscosmos, center, and David Saint-Jacques of the Canadian Space Agency, right, pose for a picture as the Soyuz rocket arrives at the launch pad after being rolled out by train, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Victor Zelentsov)

Expedition 56 prime crew members Alexander Gerst of ESA (European Space Agency), left, Serena Auñón-Chancellor of NASA, second from left, and Sergey Prokopyev of Roscosmos, third from left, pose for a picture with backup crew members Oleg Artemyev of Roscosmos, third from right, Anne McClain of NASA, second from right, and David Saint-Jacques of the Canadian Space Agency, right, pose for a picture following the conclusion of a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e051936 - Outside the Korolev Museum at the Baikonur Cosmodrome in Kazakhstan, the Expedition 56 prime and backup crewmembers walk to a flight article of a Russian Buran space shuttle May 31 that is on display at the launch site as part of their pre-launch activities. Serena Aunon-Chancellor of NASA, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency will launch June 6 in the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station. ..NASA/Victor Zelentsov.

jsc2018e049986 - Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) arrive at their launch site at the Baikonur Cosmodrome in Kazakhstan May 19 for final pre-launch training after a flight from their training base in Star City, Russia. They will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

jsc2018e050830 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 crewmember Serena Aunon-Chancellor of NASA (left) plants a tree in her name May 29 in traditional pre-launch activities for a first-time flier. Assisting are crewmates Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right). Aunon-Chancellor, Prokopyev and Gerst will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

jsc2018e050828 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 prime crewmember Alexander Gerst of the European Space Agency takes a spin in a rotating chair May 29 to test his vestibular system as part of pre-launch activities. Gerst, Serena Aunon-Chancellor of NASA and Sergey Prokopyev of Roscosmos will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency) has his Russian Sokol suit pressure checked as he and fellow crewmates, Sergey Prokopyev of Roscosmos and Serena Auñón-Chancellor of NASA prepare for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA is helped into her Russian Sokol suit as she and fellow crewmates, Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency) prepare for their Soyuz launch to the International Space Station Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is seen on the launch pad as the service structure arms are closed around it, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e050829 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 prime crewmember Serena Aunon-Chancellor of NASA takes a spin in a rotating chair May 29 to test her vestibular system as part of pre-launch activities. Aunon-Chancellor, Alexander Gerst of the European Space Agency and Sergey Prokopyev of Roscosmos will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, left, Soyuz Commander Sergey Prokopyev of Roscosmos, center, and flight engineer Alexander Gerst of ESA (European Space Agency) are seen after donning their Russian Sokol suits as they prepare for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e049987 - Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) report to Russian space officials May 19 after arriving at their launch site at the Baikonur Cosmodrome in Kazakhstan May 19 following a flight from their training base in Star City, Russia. They will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

jsc2018e048503 - At the Kremlin Wall in Red Square in Moscow May 14, Expedition 56 crewmember Serena Aunon-Chancellor of NASA lays flowers where Russian space icons are interred as part of traditional pre-launch ceremonies. Aunon-Chancellor, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

jsc2018e048508 - Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) pose for pictures in front of the Tsar Cannon at the Kremlin in Moscow May 14 as part of traditional pre-launch activities. They will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

jsc2018e051926 - In the Integration Facility at the Baikonur Cosmodrome in Kazakhstan, Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) pose for pictures May 31 in front of the Soyuz spacecraft that will launch them to the International Space Station during a final inspection. Aunon-Chancellor, Prokopyev and Gerst will launch June 6 in the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station. ..NASA/Victor Zelentsov.

jsc2018e051933 - In the Korolev Museum at the Baikonur Cosmodrome in Kazakhstan, Expedition 56 crewmember Serena Aunon-Chancellor of NASA signs a wall mural May 31 during traditional pre-launch activities. Aunon-Chancellor, Alexander Gerst of the European Space Agency and Sergey Prokopyev of Roscosmos will launch June 6 in the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station. ..NASA/Victor Zelentsov.

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency) is seen as he waits to have his Russian Sokol suit pressure checked as he and fellow crewmates, Sergey Prokopyev of Roscosmos and Serena Auñón-Chancellor of NASA prepare for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency) is helped into his Russian Sokol suit as he and fellow crewmates, Serena Auñón-Chancellor of NASA and Sergey Prokopyev of Roscosmos prepare for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Gerst, Auñón-Chancellor, and Prokopyev on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

At their Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, the Expedition 56 prime and backup crewmembers raise the flags of the U.S., Russia, Germany and Kazakhstan May 21 in traditional pre-launch ceremonies. Serena Aunon-Chancellor of NASA, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency will launch June 6 on the Soyuz MS-09 spacecraft from Baikonur for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow crewmates Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst will launch in their Soyuz MS-09 spacecraft to the International Space Station to being a six month mission. Photo Credit: (NASA/Joel Kowsky)

Workers prepare to raise the Soyuz rocket into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA waves to family and friends as she prepares to have her Russian Sokol suit pressure checked in preparation for launch aboard the Soyuz MS-09 spacecraft, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Sergey Prokopyev of Roscosmos, and Alexander Gerst of ESA (European Space Agency) on a six month mission aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

An Orthodox Priest blesses members of the media at the Baikonur Cosmodrome launch pad, Tuesday, June 5, 2018 in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is seen after being raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e050825 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 crewmembers Alexander Gerst of the European Space Agency (left) and Serena Aunon-Chancellor of NASA try their hand at a game of chess May 29 as part of the traditional pre-launch ceremonies. They and crewmate Sergey Prokopyev of Roscosmos will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

jsc2018e048505 - At the Kremlin Wall in Red Square in Moscow May 14, Expedition 56 prime crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) pose for pictures as part of traditional pre-launch activities. They will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

The Soyuz rocket is seen after being raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e051934 - In the Korolev Museum at the Baikonur Cosmodrome in Kazakhstan, Expedition 56 crewmember Alexander Gerst of the European Space Agency signs a wall mural May 31 during traditional pre-launch activities. Gerst, Serena Aunon-Chancellor of NASA and Sergey Prokopyev of Roscosmos will launch June 6 in the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station. ..NASA/Victor Zelentsov.

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency) is helped into his Russian Sokol suit as he and fellow crewmates, Sergey Prokopyev of Roscosmos and Serena Auñón-Chancellor of NASA prepare for their Soyuz launch to the International Space Station Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Gerst, Auñón-Chancellor, and Prokopyev on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, Soyuz Commander Sergey Prokopyev of Roscosmos, and flight engineer Alexander Gerst of ESA (European Space Agency) receive a blessing from a Russian Orthodox Priest at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket, Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst will launch in their Soyuz MS-09 spacecraft to the International Space Station to being a six month mission. Photo Credit: (NASA/Joel Kowsky)

jsc2018e048504 - At the Kremlin Wall in Red Square in Moscow May 14, Expedition 56 crewmember Alexander Gerst of the European Space Agency lays flowers where Russian space icons are interred as part of traditional pre-launch ceremonies. Gerst, Serena Aunon-Chancellor of NASA and Sergey Prokopyev of Roscosmos will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

jsc2018e050821 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) conduct rendezvous and docking procedures on a laptop training simulator May 29 as part of their pre-launch preparations. Aunon-Chancellor, Prokopyev and Gerst will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

The Soyuz rocket is seen after being raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is seen on the launch pad as the service structure arms are closed around it, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e048509 - Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) pose for pictures in front of the Tsar Cannon at the Kremlin in Moscow May 14 as part of traditional pre-launch activities. They will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e050823 - At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) review training documents with a Gagarin Cosmonaut Training Center instructor (far left) May 29 as they prepare for their upcoming launch. Aunon-Chancellor, Prokopyev and Gerst will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA is helped into her Russian Sokol suit as she and fellow crewmates, Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency) prepare for their Soyuz launch to the International Space Station Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Workers are seen on a gantry after the Soyuz rocket was raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is raised into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA is seen as she waits to have her Russian Sokol suit pressure checked as he and fellow crewmates, Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency) prepare for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket will send Auñón-Chancellor, Prokopyev, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e048506 - Expedition 56 crewmember Serena Aunon-Chancellor of NASA takes a stroll through the grounds of the Kremlin in Moscow May 14 as part of traditional pre-launch activities. Aunon-Chancellor, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency will launch June 6 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-09 spacecraft for a six month mission on the International Space Station...NASA/Elizabeth Weissinger.

Workers prepare to raise the Soyuz rocket into a vertical position on the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is seen on the launch pad shortly after being rolled out by train, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e050026 - At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 56 crewmembers Serena Aunon-Chancellor of NASA (left), Sergey Prokopyev of Roscosmos (center) and Alexander Gerst of the European Space Agency (right) pose for pictures May 19 before boarding a bus that took them to a nearby airfield for a flight to their launch site at the Baikonur Cosmodrome in Kazakhstan. They will launch June 6 on the Soyuz MS-09 spacecraft from Baikonur for a six-month mission on the International Space Station...NASA/Elizabeth Weissinger.

The Soyuz rocket is seen on the launch pad as the service structure arms are closed around it, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

jsc2018e049985 - Aboard a Gagarin Cosmonaut Training Center aircraft, Expedition 56 crewmembers Sergey Prokopyev of Roscosmos (left), Serena Aunon-Chancellor of NASA (center) and Alexander Gerst of the European Space Agency (right) affix crew insignia decals to the cabin wall May 19 as they flew from their Russian training base to their launch site at the Baikonur Cosmodrome in Kazakhstan. They will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome for a six-month mission on the International Space Station...NASA/Victor Zelentsov.

The Soyuz rocket is rolled out by train to the launch pad, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

An Orthodox Priest is seen after blessing the Soyuz rocket at the Baikonur Cosmodrome launch pad, Tuesday, June 5, 2018 in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)