Expedition 64 crew member Sergey Ryzhikov of Roscosmos signs in for Soyuz qualification exams as crew mate Sergey Kud-Sverchkov of Roscosmos looks on, Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew member Oleg Novitskiy of Roscosmos, arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Ryzhikov of Roscosmos, signs in for Soyuz qualification exams as fellow crew member Sergey Kud-Sverchkov of Roscosmos looks on, Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew member Petr Dubrov of Roscosmos arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew members NASA astronaut Mark Vande Hei, arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA signs in for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA, is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA, is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station.Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA, is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anne McClain of NASA is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Kate Rubins of NASA signs in for Soyuz qualification exams as crew mates Sergey Ryzhikov of Roscosmos, center, and Sergey Kud-Sverchkov of Roscosmos look on, Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 crew member Sergey Kud-Sverchkov of Roscosmos signs in for Soyuz qualification exams, as crew mates Kate Rubins of NASA, left and Sergey Ryzhikov of Roscosmos look on, Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 crew members NASA astronaut Mark Vande Hei, right, and Russian cosmonaut Oleg Novitskiy of Roscosmos, left, are seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos, signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos, is seen during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member NASA astronaut Mark Vande Hei is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Mark Vande Hei of NASA, arrives for Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos, signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos signs in for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 crew member Sergey Kud-Sverchkov of Roscosmos arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Ryzhikov of Roscosmos arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Oleg Artemyev of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos arrives for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos signs in for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Mark Vande Hei of NASA, arrives for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Director of the Gagarin Cosmonaut Training Center (GCTC), Pavel Vlasov, speaks during Expedition 65 Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Launch of the mission is scheduled for April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Ryzhikov of Roscosmos is seen during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Kud-Sverchkov of Roscosmos is seen during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Russian cosmonaut Pyotr Dubrov of Roscosmos, signs in for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Director of the Gagarin Cosmonaut Training Center (GCTC), Pavel Vlasov, is seen during Expedition 65 Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Launch of the mission is scheduled for April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Oleg Artemyev of Roscosmos signs in for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos, signs in for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member, Oleg Artemyev of Roscosmos signs in for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Mark Vande Hei of NASA, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Mark Vande Hei of NASA, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonaut Pyotr Dubrov of Roscosmos are seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Kud-Sverchkov of Roscosmos signs in for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member NASA astronaut Kate Rubins, signs in for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of her scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew members Sergey Ryzhikov of Roscosmos, left, and Sergey Kud-Sverchkov of Roscosmos are seen on monitors during the Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos arrives for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member NASA astronaut Kate Rubins, is seen during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of her scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Pyotr Dubrov of Roscosmos, signs in for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Russian cosmonaut Oleg Novitskiy of Roscosmos, signs in for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member NASA astronaut Anne McClain signs in for Soyuz qualification exams while Russian cosmonaut Oleg Artemyev of Roscosmos looks on, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Oleg Novitskiy of Roscosmos, is seen during Soyuz qualification exams Saturday, March 20, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member Mark Vande Hei of NASA, signs in for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member NASA astronaut Kate Rubins, arrives for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of her scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Kud-Sverchkov of Roscosmos is seen during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew member NASA astronaut Mark Vande Hei, signs in for Soyuz qualification exams while crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos, left, and Russian cosmonaut Pyotr Dubrov of Roscosmos look on, Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members Russian cosmonaut Pyotr Dubrov of Roscosmos, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Mark Vande Hei, pose for a photo during qualification exams, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Sergey Ryzhikov of Roscosmos is seen during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of his scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos meet with mission managers ahead of their Soyuz qualification exams, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos meet with mission managers during Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 crew member Sergey Ryzhikov of Roscosmos signs in for his Soyuz qualification exams as crew mates Kate Rubins of NASA, left, and Sergey Kud-Sverchkov of Roscosmos, right, look on, Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos arrive for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew members NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos arrive for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew members NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos arrive for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 crew members Russian cosmonaut Pyotr Dubrov of Roscosmos, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Mark Vande Hei, pose for a photo during qualification exams, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew members Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and NASA astronaut Kate Rubins, right, pose for a photo during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 backup crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Petr Dubrov of Roscosmos arrive for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 backup crew member Oleg Novitskiy of Roscosmos signs in for Soyuz qualification exams while NASA astronaut Mark Vande Hei, left, and Russian cosmonaut Petr Dubrov of Roscosmos, right, look on, Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 crew members NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos arrive for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos meet with mission managers during Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 crew members Russian cosmonaut Pyotr Dubrov of Roscosmos, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and NASA astronaut Mark Vande Hei, pose for a photo during qualification exams, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos wave during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew member Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos signs in for Soyuz qualification exams as NASA astronaut Kate Rubins, left, and Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, look on, Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member NASA astronaut Anne McClain signs in for Soyuz qualification exams while Russian cosmonaut Anton Shkaplerov of Roscosmos, left, and Russian cosmonaut Oleg Artemyev of Roscosmos look on, Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Petr Dubrov of Roscosmos arrive for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 crew members Sergey Ryzhikov of Roscosmos, left, Kate Rubins of NASA ,center, and Sergey Kud-Sverchkov of Roscosmos arrive for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew member Oleg Artemyev of Roscosmos is seen with crew mates NASA astronaut Anne McClain, left, and Anton Shkaplerov of Roscosmos during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members Russian cosmonaut Oleg Artemyev of Roscosmos, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and NASA astronaut Anne McClain, pose for a photo during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos arrive for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Petr Dubrov of Roscosmos wave during Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members Russian cosmonaut Oleg Artemyev of Roscosmos, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and NASA astronaut Anne McClain, are seen during Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos arrive for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos arrive for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 backup crew member Mark Vande Hei of NASA signs in for his Soyuz qualification exams as crew mates Oleg Novitskiy of Roscosmos, left, and Petr Dubrov of Roscosmos look on, Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and Russian cosmonaut Oleg Artemyev of Roscosmos arrive for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos arrive for Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 backup crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Petr Dubrov of Roscosmos arrive for Soyuz qualification exams Tuesday, Sept. 22, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members Russian cosmonaut Oleg Artemyev of Roscosmos, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and NASA astronaut Anne McClain, pose for a photo during Soyuz qualification exams Monday, March 22, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos arrive for Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos arrive for Soyuz qualification exams Saturday, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos arrive for Soyuz qualification exams iptcdow}, March 20, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 65 backup crew members Russian cosmonaut Oleg Artemyev of Roscosmos, left, Russian cosmonaut Anton Shkaplerov of Roscosmos, center, and NASA astronaut Anne McClain, pose for a photo during Soyuz qualification exams Monday, March 22, 2021, at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of the Expedition 65 launch April 9 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 64 crew members NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos arrive for Soyuz qualification exams Wednesday, Sept. 23, 2020 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, in advance of their scheduled launch October 14 from Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)