Expedition 65 prime crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov of Roscosmos pose for a photo outside the Soyuz MS-18 spacecraft during the final fit check to prepare for launch Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The trio are scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member NASA astronaut Mark Vande Hei, gives a thumbs up as he heads inside the Soyuz MS-18 spacecraft during a fit check to prepare for launch with fellow Russian cosmonauts Oleg Novitskiy of Roscosmos and Pyotr Dubrov of Roscosmos, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Oleg Novitskiy of Roscosmos, holds up a toy cat that will be used in the Soyuz capsule to help indicate the start of weightlessness after leaving the Earth’s atmosphere, Wednesday, March 24, 2021 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, and Russian cosmonauts Anton Shkaplerov, center, and Oleg Artemyev of Roscosmos, pose for a photo during a final fit check, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The prime crew is scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Russian Orthodox Priest Father Sergei performs the traditional crew blessing on Expedition 65 Russian cosmonaut Pyotr Dubrov and crewmates NASA astronaut Mark Vande Hei and Russian cosmonaut Oleg Novitskiy at the Cosmonaut Hotel as the crew departed the hotel for launch on a Soyuz rocket, Friday, April 9, 2021, in Baikonur, Kazakhstan. Photo Credit: (NASA/GCTC/Irina Spector

From left to right, Expedition 65 prime crew members NASA astronaut Mark Vande Hei, Russian cosmonauts Oleg Novitskiy of Roscosmos, and Pyotr Dubrov of Roscosmos meet with mission managers from behind glass for quarantine with Expedition 65 backup crew members Russian cosmonauts Oleg Artemyev of Roscosmos, Anton Shkaplerov, and NASA astronaut Anne McClain, in preparation for launch of the prime crew, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right, Expedition 65 backup crew member Anton Shkaplerov of Roscosmos, Expedition 65 prime crew members, NASA astronaut Mark Vande Hei, and Russian cosmonauts Oleg Novitskiy, and Pyotr Dubrov of Roscosmos, backup crew members Russian cosmonaut Oleg Artemyev of Roscosmos, and NASA astronaut Anne McClain, pose for a photo with an optical device used to manually monitor docking on the Soyuz spacecraft at the Baikonur Cosmodrome Museum, Sunday, April 4, 2021 in Baikonur, Kazakhstan. The prime crew is scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 57 Flight Engineer Alexey Ovchinin of Roscosmos dons his Sokol suit ahead of his launch on a Soyuz rocket with Flight Engineer Nick Hague of NASA, Thursday, Oct. 11, 2018 at the Baikonur Cosmodrome in Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 61 astronaut Jessica Meir of NASA has her Sokol suit pressure checked a few hours ahead of her launch on a Soyuz rocket with Expedition 61 cosmonaut Oleg Skripochka of Roscosmos and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Oleg Novitskiy of Roscosmos gestures as he heads inside the Soyuz MS-18 spacecraft during a fit check to prepare for launch with fellow Russian cosmonaut Pyotr Dubrov of Roscosmos, and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 61 cosmonaut Oleg Skripochka of Roscosmos dons his Sokol suit a few hours ahead of his launch on a Soyuz rocket with Expedition 61 astronaut Jessica Meir of NASA and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

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 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)

From left to right, Expedition 64 prime crew members, NASA astronaut Kate Rubins, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos and Expedition 64 backup crew members, Russian cosmonaut Petr Dubrov of Roscosmos (right), NASA astronaut Mark Vande Hei, and Russian cosmonaut Oleg Novitskiy of Roscosmos, visit Red Square to lay flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. 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 prime crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy of Roscosmos, center, and Pyotr Dubrov of Roscosmos, are seen after donning their Sokol suits during a fit check to prepare for launch, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, and Russian cosmonauts Anton Shkaplerov of Roscosmos, center, and Oleg Artemyev of Roscosmos, right, are greeted by onlookers after arriving in Baikonur, Kazakhstan from the Gagarin Cosmonaut Training Center (GCTC), Friday, March 26, 2021. The prime crew is scheduled to launch from the Baikonur Cosmodrome on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Pyotr Dubrov of Roscosmos signs his name to a wall mural bearing the picture of a Soyuz launch at the Baikonur Cosmodrome Museum, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. Dubrov, Oleg Novitskiy of Roscosmos, and NASA astronaut Mark Vande Hei are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Mark Vande Hei of NASA is assisted with his glove during a Sokol suit pressure check to prepare for launch with crew mates Russian cosmonauts Oleg Novitskiy of Roscosmos and Pyotr Dubrov of Roscosmos, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 prime crew member Sergey Ryzhikov of Roscosmos lays flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. 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/Irina Spector)

Expedition 65 Russian cosmonaut Oleg Novitskiy performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow crewmates Russian cosmonaut Pyotr Dubrov, and NASA astronaut Mark Vande Hei, Friday, April 9, 2021, in Baikonur, Kazakhstan. Launch of the Soyuz rocket will sent the trio on a mission to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector

Expedition 65 prime and backup crew members rare seen just after raising the flags of Russia, the United States, and Kazakhstan, Sunday, March 28, 2021, in traditional ceremonies outside the Cosmonaut Hotel in Baikonur, Kazakhstan. From left to right, Expedition 65 prime crew members, NASA astronaut Mark Vande Hei, Russian cosmonauts Oleg Novitskiy of Roscosmos and Pyotr Dubrov of Roscosmos, and Expedition 65 backup crew members NASA astronaut Anne McClain, and Russian cosmonauts Anton Shkaplerov of Roscosmos, and Oleg Artemyev of Roscosmos. The prime crew is scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member NASA astronaut Anne McClain, speaks during a press conference prior to the prime crew’s launch from the Baikonur Cosmodrome in Kazakhstan, Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 59 astronaut Christina Koch of NASA talks with family and mission management prior to her launch with Nick Hague of NASA and Alexey Ovchinin of Roscosmos, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right, Expedition 64 prime crew members, NASA astronaut Kate Rubins, Russian cosmonaut Sergey Ryzhikov of Roscosmos, Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos and Expedition 64 backup crew members, NASA astronaut Mark Vande Hei, Russian cosmonaut Oleg Novitskiy of Roscosmos, and Russian cosmonaut Petr Dubrov of Roscosmos, pose for a photo in front of the Tsar Bell in Red Square after laying flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member Russian cosmonaut Oleg Artemyev of Roscosmos plays a game of ping-pong, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The prime crew, NASA astronaut Mark Vande Hei, and Russian cosmonauts Oleg Novitskiy and Pyotr Dubrov of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Oleg Novitskiy of Roscosmos has his Sokol suit pressure checked during a fit check to prepare for launch with crew mates Russian cosmonaut Pyotr Dubrov of Roscosmos and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

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 65 backup crew members NASA astronaut Anne McClain, second from left, and Russian cosmonauts Anton Shkaplerov center, and Oleg Artemyev of Roscosmos are seen during a fit check Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. The prime crew is scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 61 cosmonaut Oleg Skripochka of Roscosmos has his Sokol suit pressure checked a few hours ahead of his launch on a Soyuz rocket with Expedition 61 astronaut Jessica Meir of NASA and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov of Roscosmos, pose for a photo after a tree planting ceremony that is part of traditional pre-launch activities, Saturday, April 3, 2021, in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 prime crew members, NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos visit Red Square to lay flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. 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 65 prime crew members NASA astronaut Mark Vande Hei, left, Pyotr Dubrov, center, and Oleg Novitskiy of Roscosmos give a thumbs up in the bus that is taking them to their final fit check to prepare for launch, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The trio are scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 Russian cosmonaut Oleg Novitskiy has his Russian Sokol suit pressure checked as he and fellow crewmates NASA astronaut Mark Vande Hei and Russian cosmonaut Pyotr Dubrov prepare for their Soyuz launch to the International Space Station Friday, April 9, 2021 in Baikonur, Kazakhstan. Launch of the Soyuz rocket sent the trio on a mission to the International Space Station. 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 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 59 astronaut Nick Hague of NASA laughs as he talks with NASA Flight Surgeon Blake Chamberlain prior to his launch on a Soyuz rocket with Christina Koch of NASA and Alexey Ovchinin of Roscosmos, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members NASA astronaut Mark Vande Hei, left, Oleg Novitskiy of Roscosmos, center, and Pyotr Dubrov of Roscosmos, are seen during a fit check to prepare for their launch Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Oleg Novitskiy of Roscosmos has his Sokol suit pressure checked while fellow crew mates, NASA astronaut Mark Vande Hei, right, and Russian cosmonaut Pyotr Dubrov of Roscosmos look on, during a fit check to prepare for launch, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Pyotr Dubrov of Roscosmos has his Sokol suit pressure checked during a fit check to prepare for launch with crew mates Russian cosmonaut Oleg Novitskiy of Roscosmos and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 NASA astronaut Mark Vande Hei, left, Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov pose for a group photo after donning their Russian Sokol suits ahead of their Soyuz launch to the International Space Station Friday, April 9, 2021 in Baikonur, Kazakhstan. Launch of the Soyuz rocket sent the trio on a mission to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 57 Flight Engineer Alexey Ovchinin of Roscosmos, left, and Flight Engineer Nick Hague of NASA wave farewell outside the Cosmonaut Hotel prior to departing for launch on a Soyuz rocket, Thursday, Oct. 11, 2018 in Baikonur, Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, and Russian cosmonauts Anton Shkaplerov, center, and Oleg Artemyev, right, of Roscosmos practice rendezvous techniques on a laptop simulator, Saturday, April 3, 2021, in Baikonur, Kazakhstan. The prime crew is scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Pyotr Dubrov of Roscosmos is seen inside the Soyuz MS-18 spacecraft during a fit check to prepare for launch with fellow Russian cosmonaut Oleg Novitskiy of Roscosmos and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates and backup spaceflight participant Sultan Al-Neyadi take a photograph a few hours ahead of Almansoori’s launch on a Soyuz rocket with Expedition 61 crewmembers Jessica Meir of NASA and Oleg Skripochka of Roscosmos, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right, Expedition 65 prime crew members, NASA astronaut Mark Vande Hei, Russian cosmonaut Oleg Novitskiy of Roscosmos, Russian cosmonaut Pyotr Dubrov of Roscosmos, and Expedition 65 backup crew members Russian cosmonaut Anton Shkaplerov of Roscosmos, NASA astronaut Anne McClain, and Russian cosmonaut Oleg Artemyev of Roscosmos, pose for a photo after a press conference prior to the prime team’s launch from Baikonur Cosmodrome, Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 prime crew members, NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos pose for a photo in front of the Tsar Bell in Red Square after laying flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. Photo Credit: (NASA/GCTC/Irina Spector)

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 prime crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov, right, of Roscosmos practice rendezvous techniques on a laptop simulator, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. They are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members, NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy of Roscosmos, center, and Pyotr Dubrov of Roscosmos, right, arrive in Baikonur, Kazakhstan from the Gagarin Cosmonaut Training Center (GCTC), Friday, March 26, 2021. They are scheduled to launch from the Baikonur Cosmodrome on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members NASA astronaut Mark Vande Hei, second from left, Russian cosmonauts Oleg Novitskiy of Roscosmos, center, and Pyotr Dubrov of Roscosmos, third from right, are seen touring building 254 during a fit check to prepare for launch, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 57 Flight Engineer Alexey Ovchinin of Roscosmos, left, and Flight Engineer Nick Hague of NASA wave farewell from a bus outside the Cosmonaut Hotel prior to departing for launch on a Soyuz rocket, Thursday, Oct. 11, 2018 in Baikonur, Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Pyotr Dubrov of Roscosmos waves during a press conference prior to his launch from the Baikonur Cosmodrome in Kazakhstan, Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

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 57 Flight Engineer Alexey Ovchinin of Roscosmos, left, and Flight Engineer Nick Hague of NASA dons their Sokol suits ahead of their launch on a Soyuz rocket, Thursday, Oct. 11, 2018 at the Baikonur Cosmodrome in Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Oleg Novitskiy of Roscosmos, right, pauses for a photo as he climbs inside the Soyuz MS-18 spacecraft during the final fit check to prepare for launch with fellow Russian cosmonaut Pyotr Dubrov of Roscosmos, left, and NASA astronaut Mark Vande Hei, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The trio are scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, second from left, and Russian cosmonauts Anton Shkaplerov, center, and Oleg Artemyev, right, of Roscosmos review launch procedures with trainers, Saturday, April 3, 2021, in Baikonur, Kazakhstan. The prime crew is scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. 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 65 backup crew members Russian cosmonaut Anton Shkaplerov of Roscosmos, first, NASA astronaut Anne McClain, second, and Oleg Artemyev of Roscosmos, arrive in Baikonur, Kazakhstan from the Gagarin Cosmonaut Training Center (GCTC), Friday, March 26, 2021. The prime crew is scheduled to launch from the Baikonur Cosmodrome on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Pyotr Dubrov of Roscosmos waters a tree bearing his name while crew mates NASA astronaut Mark Vande Hei, left, watches and Oleg Novitskiy of Roscosmos, holds it straight for him, as part of traditional pre-launch activities, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Flight Engineer Nick Hague of NASA dons his Sokol suits ahead of his launch on a Soyuz rocket with Flight Engineer Alexey Ovchinin of Roscosmos, Thursday, Oct. 11, 2018 at the Baikonur Cosmodrome in Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members, NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy of Roscosmos, center, and Pyotr Dubrov of Roscosmos, right, meet with mission managers after arriving in Baikonur, Kazakhstan from the Gagarin Cosmonaut Training Center (GCTC), Friday, March 26, 2021. They are scheduled to launch from the Baikonur Cosmodrome on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 prime crew members, NASA astronaut Kate Rubins, left, Russian cosmonaut Sergey Ryzhikov of Roscosmos, center, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos pose for a photo in front of the Tsar Cannon in Red Square after laying flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Pyotr Dubrov of Roscosmos waters a tree bearing his name while crew mates NASA astronaut Mark Vande Hei, center, watches and Oleg Novitskiy of Roscosmos, holds it straight for him, as part of traditional pre-launch activities, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right, Expedition 64 backup crew members NASA astronaut Mark Vande Hei, Russian cosmonaut Oleg Novitskiy of Roscosmos, Russian cosmonaut Petr Dubrov of Roscosmos, and Expedition 64 prime crew members, NASA astronaut Kate Rubins, Russian cosmonaut Sergey Ryzhikov of Roscosmos, and Russian cosmonaut Sergey Kud-Sverchkov of Roscosmos pose for a photo at Red Square after laying flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 in Moscow. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 Russian cosmonaut Pyotr Dubrov has his Russian Sokol suit pressure checked as he and fellow crewmates NASA astronaut Mark Vande Hei and Russian cosmonaut Oleg Novitskiyprepare for their Soyuz launch to the International Space Station Friday, April 9, 2021 in Baikonur, Kazakhstan. Launch of the Soyuz rocket sent the trio on a mission to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member Russian cosmonaut Oleg Artemyev speaks during a press conference prior to the prime crew’s launch from the Baikonur Cosmodrome in Kazakhstan, Wednesday, March 24, 2021 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, left, Russian cosmonaut Oleg Novitskiy of Roscosmos, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos, pose for a photo after a press conference prior to their launch from the Baikonur Cosmodrome, Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 59 cosmonaut Alexey Ovchinin of Roscosmos dons his Sokol suit prior to his launch on a Soyuz rocket with Nick Hague and Christina Koch of NASA, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 59 cosmonaut Alexey Ovchinin of Roscosmos dons his Sokol suit prior to his launch on a Soyuz rocket with Nick Hague and Christina Koch of NASA, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member Russian cosmonaut Oleg Artemyev of Roscosmos, left, and Expedition 65 prime crew member Russian cosmonaut Oleg Novitskiy of Roscosmos play a game of ping-pong, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The prime crew, Novitskiy, NASA astronaut Mark Vande Hei, and Russian cosmonaut Pyotr Dubrov of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew members NASA astronaut Anne McClain, left, and Russian cosmonauts Anton Shkaplerov, center, and Oleg Artemyev, right, of Roscosmos review launch procedures with trainers, Saturday, April 3, 2021, in Baikonur, Kazakhstan. The prime crew is scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Oleg Novitskiy of Roscosmos, left, has his Sokol suit pressure checked while fellow crew mates, NASA astronaut Mark Vande Hei, center, and Russian cosmonaut Pyotr Dubrov of Roscosmos look on, during a fit check to prepare for launch, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. 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 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 61 crewmembers Jessica Meir of NASA and Oleg Skripochka of Roscosmos, and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates talk with officials a few hours ahead of their launch on a Soyuz rocket, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member Russian cosmonaut Oleg Artemyev of Roscosmos plays a game of billiards, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The prime crew, NASA astronaut Mark Vande Hei, and Russian cosmonauts Oleg Novitskiy and Pyotr Dubrov of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Pyotr Dubrov of Roscosmos dons his Sokol suit during the fit check to prepare for launch with fellow Russian cosmonaut Oleg Novitskiy of Roscosmos, and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 64 prime crew member, Kate Rubins of NASA lays flowers at the site where Russian space icons are interred as part of traditional pre-launch ceremonies, Thursday, Sept. 24, 2020 at Red Square in Moscow. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 NASA astronaut Mark Vande Hei, left, Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov report to Roscosmos mission management prior to their Soyuz launch to the International Space Station Friday, April 9, 2021 in Baikonur, Kazakhstan. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right Expedition 65 backup crew members NASA astronaut Anne McClain and Russian cosmonaut Anton Shkaplerov of Roscosmos, and prime crew members NASA astronaut Mark Vande Hei, and Russian cosmonauts Pyotr Dubrov and Oleg Novitskiy of Roscosmos, and backup crew member Oleg Artemyev of Roscosmos pose for a photo after Dubrov planted a tree bearing his name as part of traditional pre-launch activities, Saturday, April 3, 2021, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Vande Hei, Novitskiy and Dubrov are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 59 astronaut Christina Koch of NASA dons her Sokol suit prior to her launch on a Soyuz rocket with Nick Hague of NASA and Alexey Ovchinin of Roscosmos, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member NASA astronaut Mark Vande Hei, front left, Russian cosmonauts Oleg Novitskiy of Roscosmos front center, and Pyotr Dubrov of Roscosmos, front right, pose for a photo with Expedition 65 backup crew members NASA astronaut Anne McClain, back left, and Russian cosmonauts Anton Shkaplerov of Roscosmos, back center, and Oleg Artemyev of Roscosmos, back right, after the prime crew’s Sokol suits were pressure checked in preparation for launch, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member Oleg Artemyev of Roscosmos heads inside the Soyuz MS-18 spacecraft during a fit check with fellow Russian cosmonaut Anton Shkaplerov of Roscosmos, and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. The prime crew is scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 57 Flight Engineer Nick Hague of NASA, right, is blessed by a Russian Orthodox Priest, Father Sergei, in the Cosmonaut Hotel prior to departing for launch on a Soyuz rocket with Flight Engineer Alexey Ovchinin of Roscosmos, left, Thursday, Oct. 11, 2018 in Baikonur, Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Oleg Novitskiy of Roscosmos is seen heading inside the Soyuz MS-18 spacecraft during a fit check to prepare for launch with fellow cosmonaut Pyotr Dubrov of Roscosmos, and NASA astronaut Mark Vande Hei, Saturday, March 27, 2021 at the Baikonur Cosmodrome in Kazakhstan. They are scheduled to launch on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew member Russian cosmonaut Oleg Novitskiy of Roscosmos signs his name to a wall mural bearing the picture of a Soyuz launch at the Baikonur Cosmodrome Museum, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. Novitskiy, Pyotr Dubrov of Roscosmos, and NASA astronaut Mark Vande Hei are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 59 crewmembers Christina Koch of NASA, left, Alexey Ovchinin of Roscosmos, and Nick Hague of NASA, right, talk with family and mission management prior to their launch, Thursday, March 14, 2019 at the Baikonur Cosmodrome in Kazakhstan. Hague, Koch, and Ovchinin launched March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 Roscosmos cosmonauts Oleg Novitskiy , left, Pyotr Dubrov, center, and NASA astronaut Mark Vande Hei, wave as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Friday, April 9, 2021, in Baikonur, Kazakhstan. Later that same day the crew launched in their Soyuz MS-18 spacecraft to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector

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, Oleg Artemyev of Roscosmos, left, Anton Shkaplerov of Roscosmos, center and NASA astronaut Anne McClain, pose for a photo after arriving in Baikonur, Kazakhstan from the Gagarin Cosmonaut Training Center (GCTC), Friday, March 26, 2021. The prime crew is scheduled to launch from the Baikonur Cosmodrome on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

From left to right, Expedition 65 prime crew members NASA astronaut Mark Vande Hei, and Russian cosmonauts Pyotr Dubrov, and Oleg Novitskiy of Roscosmos, are seen with backup crew members Russian cosmonauts Anton Shkaplerov and Oleg Artemyev, and NASA astronaut Anne McClain while signing mission books after the final Soyuz MS-18 spacecraft fit check, Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The prime crew is scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 61 astronaut Jessica Meir of NASA dons her Sokol suit a few hours ahead of her launch on a Soyuz rocket with Expedition 61 cosmonaut Oleg Skripochka of Roscosmos and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates, Wednesday, Sept. 25, 2019 at the Baikonur Cosmodrome in Kazakhstan. Meir, Skripochka, and Almansoori will launch on the Soyuz MS-15 spacecraft from the Baikonur Cosmodrome to the International Space Station. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 prime crew members NASA astronaut Mark Vande Hei, second from left, and Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov, right, of Roscosmos review launch procedures with trainers, Saturday, April 3, 2021, in Baikonur, Kazakhstan. They are scheduled to launch to the International Space Station aboard the Soyuz MS-18 spacecraft on April 9. 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/Irina Spector)

Expedition 65 prime crew members NASA astronaut Mark Vande Hei, left, and Russian cosmonauts Oleg Novitskiy, center, and Pyotr Dubrov of Roscosmos are seen walking away from the Soyuz MS-18 spacecraft during the final fit check to prepare for launch Sunday, April 4, 2021 at the Baikonur Cosmodrome in Kazakhstan. The trio are scheduled to launch to the International Space Station on a Soyuz rocket April 9. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 backup crew member, Anton Shkaplerov of Roscosmos signs a guest book at the "Memorial working study of Yuri Gagarin" at the Gagarin Cosmonaut Training Center (GCTC), as his crew mates watch, Wednesday, March 24, 2021 in Star City, Russia. The memorial study represents Gagarin's working study in the way it was abandoned by Gagarin on March 27, 1968 before leaving for the airfield for training flight that became his last. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 57 Flight Engineer Alexey Ovchinin of Roscosmos says farewell from a bus outside the Cosmonaut Hotel prior to departing for launch on a Soyuz rocket with Flight Engineer Nick Hague of NASA, Thursday, Oct. 11, 2018 in Baikonur, Kazakhstan. During the Soyuz spacecraft's climb to orbit, an anomaly occurred, resulting in an abort downrange. The crew was quickly recovered and is in good condition. Photo Credit: (NASA/GCTC/Irina Spector)

Expedition 65 crew members NASA astronaut Mark Vande Hei, left, Russian cosmonaut Pyotr Dubrov of Roscosmos, center, and Russian cosmonaut Oleg Novitskiy of Roscosmos, listen during a press conference prior to their launch from the Baikonur Cosmodrome, Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/GCTC/Irina Spector)