iss069e008728 (May 3, 2023) --- Roscosmos spacewalker Sergey Prokopyev works outside the International Space Station's Roscosmos segment during the installation of an experiment airlock on the Nauka multipurpose laboratory module.

iss069e008757 (May 3, 2023) --- Roscosmos spacewalkers Sergey Prokopyev and Dmitri Petelin work outside the International Space Station's Roscosmos segment during the installation of an experiment airlock on the Nauka multipurpose laboratory module.

iss069e010450 (May 12, 2023) --- Cosmonauts Sergey Prokopyev and Dmitri Petelin work outside the International Space Station to deploy and activate a radiator on the Nauka multipurpose laboratory module during a five-hour and 14-minute spacewalk. The duo from Roscosmos is seen working outside Nauka, with its experiment airlock attached, and the Prichal docking module.

iss069e010437 (May 12, 2023) --- Cosmonauts Sergey Prokopyev and Dmitri Petelin work outside the International Space Station to deploy and activate a radiator on the Nauka multipurpose laboratory module during a five-hour and 14-minute spacewalk. The duo from Roscosmos is seen working outside Nauka, with its experiment airlock attached, and the Prichal docking module.

iss069e010448 (May 12, 2023) --- Cosmonauts Sergey Prokopyev and Dmitri Petelin work outside the International Space Station to deploy and activate a radiator on the Nauka multipurpose laboratory module during a five-hour and 14-minute spacewalk. From top to bottom, the main station elements are Nauka, with the European robotic arm and an experiment airlock attached, the Prichal docking module, and the Soyuz MS-23 crew ship.

iss069e010435 (May 12, 2023) --- Cosmonauts Sergey Prokopyev and Dmitri Petelin work outside the International Space Station to deploy and activate a radiator on the Nauka multipurpose laboratory module during a five-hour and 14-minute spacewalk. From top to bottom, the main station elements are Nauka with the European robotic arm and an experiment airlock attached, the Prichal docking module, and the Soyuz MS-23 crew ship.

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is seen outside the Soyuz MS-23 spacecraft after he landed with Roscosmos cosmonaut Dmitri Petelin and NASA astronaut Frank Rubio in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is carried to a medical tent shortly after he, NASA astronaut Frank Rubio, and Roscosmos cosmonaut Dmitri Petelin landed in their Soyuz MS-23 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, arrive at the launch pad to board their Soyuz MS-22 spacecraft for launch, Wednesday, Sept. 21, 2022, at the Baikonur Cosmodrome in Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos is seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Prokopyev, Frank Rubio of NASA, and Dmitri Petelin of Roscosmos are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos signs a photo inside the Cosmonaut Hotel prior to departing for building 254 in order to suitup for launch on a Soyuz rocket with fellow crewmates Dmitri Petelin of Roscosmos and Frank Rubio of NASA, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched on their Soyuz MS-22 spacecraft later in the day from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Sergey Prokopyev of Roscosmos rests in a chair after he Alexander Gerst of ESA (European Space Agency), and Serena Auñón-Chancellor of NASA, landed in their Soyuz MS-09 capsule in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Officials, family and friends gather to welcome home Expedition 57 cosmonaut Sergey Prokopyev of Roscosmos after he, Serena Auñón-Chancellor of NASA and Alexander Gerst of ESA (European Space Agency) landed their Soyuz MS-09 capsule near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Sergey Prokopyev of Roscosmos is carried to a medical tent shortly after he,Alexander Gerst of ESA (European Space Agency), and Serena Auñón-Chancellor of NASA landed in their Soyuz MS-09 spacecraft near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, arrive at the launch pad to board their Soyuz MS-22 spacecraft for launch, Wednesday, Sept. 21, 2022, at the Baikonur Cosmodrome in Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Officials, family and friends gather to welcome home Expedition 57 cosmonaut Sergey Prokopyev of Roscosmos after he, Serena Auñón-Chancellor of NASA and Alexander Gerst of ESA (European Space Agency) landed their Soyuz MS-09 capsule near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 crew member Sergey Prokopyev of Roscosmos is seen during a welcome ceremony at the Zhezkazgan, Kazakhstan airport shortly after he landed in a Soyuz MS-09 spacecraft with Alexander Gerst of ESA (European Space Agency), and Serena Auñón-Chancellor of NASA on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos is seen in quarantine, behind glass, during a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Prokopyev, 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)

Sergey Prokopyev of Roscosmos is helped out of the Soyuz MS-09 spacecraft just minutes after he, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, wave as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched on their Soyuz MS-22 spacecraft later in the day from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA dons his Russian Sokol suit as he and fellow crewmates Sergey Prokopyev, right, and Dmitri Petelin of Roscosmos, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos has his Russian Sokol suit pressure checked as he and fellow crewmates, Frank Rubio of NASA and Dmitri Petelin of Roscosmos, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos has his Russian Sokol suit pressure checked as he and fellow crewmates, Frank Rubio of NASA and Dmitri Petelin of Roscosmos, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

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 68 cosmonaut Dmitri Petelin of Roscosmos, left, Sergey Prokopyev of Roscosmos, and Frank Rubio of NASA, right, give a thumbs up as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched on their Soyuz MS-22 spacecraft later in the day from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos waves to family and friends as he prepares to have his 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 Prokopyev, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) on a six month mission aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, wave as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched on their Soyuz MS-22 spacecraft later in the day from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow crewmates Serena Auñón-Chancellor of NASA and Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Prokopyev, Auñón-Chancellor, 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)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos answers a question during a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Prokopyev, 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)

Expedition 57 crew members Sergey Prokopyev of Roscosmos, left, and Alexander Gerst of ESA (European Space Agency) attend a welcome ceremony at the Zhezkazgan, Kazakhstan airport after they landed in their Soyuz MS-09 spacecraft with Serena Auñón-Chancellor of NASA on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 crew members Sergey Prokopyev of Roscosmos and Alexander Gerst of ESA (European Space Agency) attend a welcome ceremony at the Zhezkazgan, Kazakhstan airport after they landed in their Soyuz MS-09 spacecraft with Serena Auñón-Chancellor of NASA on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Sergey Prokopyev of Roscosmos is carried to a medical tent shortly after he ,Alexander Gerst of ESA (European Space Agency), and Serena Auñón-Chancellor of NASA landed in their Soyuz MS-09 spacecraft near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch on a Soyuz rocket with fellow crewmates Serena Auñón-Chancellor of NASA and Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Prokopyev, Auñón-Chancellor, 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)

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is seen outside the Soyuz MS-23 spacecraft after he landed with Roscosmos cosmonaut Dmitri Petelin and NASA astronaut Frank Rubio, in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos is seen during the State Commission meeting to approve the Soyuz launch with he and his crewmates, Frank Rubio of NASA and Dmitri Petelin of Roscosmos, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

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 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)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos has his 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. Prokopyev, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos has his 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. Prokopyev, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos prepares to have his 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. Prokopyev, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos talks with family and friends after having his 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. Prokopyev, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos prepares to have his 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. Prokopyev, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency), top, flight engineer Serena Auñón-Chancellor of NASA, middle, and Soyuz Commander Sergey Prokopyev of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-09 spacecraft for launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Gerst, Auñón-Chancellor, and Prokopyev will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, wave farewell as they depart building 254 for the launch pad and their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (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)

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

Matryoshka Dolls depicting Expedition 57 crew members Serena Auñón-Chancellor of NASA, left, Sergey Prokopyev of Roscosmos, center, and Alexander Gerst of ESA (European Space Agency) are seen during a welcome ceremony at the Zhezkazgan, Kazakhstan airport on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, along with Expedition 68 backup crewmembers Loral O'Hara of NASA, Oleg Kononenko and Nikolai Chub of Roscosmos, right, are seen in quarantine, behind glass, at the conclusion of a press conference, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Rubio, Prokopyev, and Petelin are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 crew members Alexander Gerst of ESA (European Space Agency), left, Sergey Prokopyev of Roscosmos, center, and Serena Auñón-Chancellor of NASA sit in chairs outside the Soyuz MS-09 spacecraft after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

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)

Expedition 68 astronaut Frank Rubio of NASA, left, dons his Russian Sokol suit as he and fellow crewmates Sergey Prokopyev, and Dmitri Petelin of Roscosmos, right, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

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) pose for a picture following the completion of a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst 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, left, Soyuz Commander Sergey Prokopyev of Roscosmos, center, and flight engineer Alexander Gerst of ESA (European Space Agency) are seen as they leave a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst 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 68 crew members Dmitri Petelin of Roscosmos, top, Frank Rubio of NASA, and Sergey Prokopyev of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-22 spacecraft for launch, Wednesday, Sept. 21, 2022, at the Baikonur Cosmodrome in Kazakhstan. Rubio, Prokopyev and Petelin, will launch onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA joins fellow crewmates, Sergey Prokopyev and Dmitri Petelin of Roscosmos in talking to family and friends after having their Russian Sokol suits pressure checked ahead of their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, left, answers a question during a press conference along with Soyuz Commander Sergey Prokopyev of Roscosmos, center, and flight engineer Alexander Gerst of ESA (European Space Agency), right, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst 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, left, Soyuz Commander Sergey Prokopyev of Roscosmos, center, and flight engineer Alexander Gerst of ESA (European Space Agency) pose for a picture following the completion of a press conference, Tuesday, June 5, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst 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 68 astronaut Frank Rubio of NASA, left, dons his Russian Sokol suit as he and fellow crewmates Sergey Prokopyev, and Dmitri Petelin of Roscosmos, right, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 flight engineer Alexander Gerst of ESA (European Space Agency), top, flight engineer Serena Auñón-Chancellor of NASA, middle, and Soyuz Commander Sergey Prokopyev of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-09 spacecraft for launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Gerst, Auñón-Chancellor, and Prokopyev will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 68 cosmonaut Sergey Prokopyev of Roscosmos has his Russian Sokol suit pressure checked as he and fellow crewmates, Frank Rubio of NASA, and Dmitri Petelin of Roscosmos, right, prepare for their Soyuz MS-22 spacecraft launch, Wednesday, Sept. 21, 2022, in Baikonur, Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, board the Soyuz MS-22 spacecraft for launch, Wednesday, Sept. 21, 2022, at the Baikonur Cosmodrome in Kazakhstan. Rubio, Prokopyev and Petelin launched onboard the Soyuz rocket from the Baikonur Cosmodrome for a mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos has his Russian Sokol suit pressure checked as he and fellow crewmates, Serena Auñón-Chancellor of NASA 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 Prokopyev, Auñón-Chancellor, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos is helped into his Russian Sokol suit as he and fellow crewmates, Serena Auñón-Chancellor of NASA 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 Prokopyev, Auñón-Chancellor, and Gerst on a six month mission aboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is helped out of the Soyuz MS-23 spacecraft just minutes after he and Roscosmos cosmonaut Dmitri Petelin and NASA astronaut Frank Rubio, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is helped out of the Soyuz MS-23 spacecraft just minutes after he and Roscosmos cosmonaut Dmitri Petelin and NASA astronaut Frank Rubio, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 69 Roscosmos cosmonaut Sergey Prokopyev is helped out of the Soyuz MS-23 spacecraft just minutes after he and Roscosmos cosmonaut Dmitri Petelin and NASA astronaut Frank Rubio, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 69 NASA astronaut Frank Rubio left, Roscosmos cosmonauts Sergey Prokopyev, center, and Dmitri Petelin sit in chairs outside the Soyuz MS-23 spacecraft after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 27, 2023. The trio are returning to Earth after logging 371 days in space as members of Expeditions 68-69 aboard the International Space Station. For Rubio, his mission is the longest single spaceflight by a U.S. astronaut in history. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, are seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, right, are seen during the State Commission meeting to approve the Soyuz launch to the International Space Station, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

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), right, are seen as they depart Building 254 and report to mission managers a few hours before their launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos has his 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. Prokopyev, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

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), right, are seen as depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (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 as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

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), right, are seen as they depart Building 254 and report to mission managers a few hours before their launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, left, prepares to have her Russian Sokol suit pressure checked in preparation for launch aboard the Soyuz MS-09 spacecraft as Soyuz Commander Sergey Prokopyev of Roscosmos and flight engineer Alexander Gerst of ESA (European Space Agency) talk with family and friends, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

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) talk to Roscosmos and NASA management after having their Russian Sokol suits pressure checked ahead of their launch on a Soyuz rocket, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station.. Photo Credit: (NASA/Victor Zelentsov)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, left, flight engineer Alexander Gerst of ESA (European Space Agency), center, and Soyuz Commander Sergey Prokopyev of Roscosmos, right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station, Wednesday, June 6, 2018 in Baikonur, Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA, left, Soyuz Commander Sergey Prokopyev of Roscosmos, center, and flight engineer Alexander Gerst or ESA (European Space Agency), right, are seen as they talk with family and friends after having their Russian Sokol suits pressure checked in preparation for launch aboard the Soyuz MS-09 spacecraft, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

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)

Expedition 68 astronaut Frank Rubio of NASA, left, cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, along with Expedition 68 backup crewmembers Loral O'Hara of NASA, Oleg Kononenko and Nikolai Chub of Roscosmos, right, are seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Rubio, Prokoyev, and Petelin are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

jsc2017e136943 - At the Baikonur Museum in Baikonur, Kazakhstan, Expedition 54-55 backup crewmembers Jeanette Epps of NASA (second from the left), Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos, second from the right) and Alexander Gerst o

jsc2017e136938 - In the town of Baikonur, Kazakhstan, Expedition 54-55 backup crewmembers Jeanette Epps of NASA (left), Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos, center) and Alexander Gerst of the European Space Agency (right) pose f

jsc2017e136937 - At the Baikonur Museum in Baikonur, Kazakhstan, Expedition 54-55 backup crewmember Jeanette Epps of NASA views a model of a Soyuz rocket Dec. 6 during a traditional pre-launch visit to the facility. Epps, Sergey Prokopyev of the Russian Fe

jsc2017e136944 - In the town of Baikonur, Kazakhstan, Expedition 54-55 backup crewmembers Jeanette Epps of NASA, Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos) and Alexander Gerst of the European Space Agency lay flowers Dec. 6 at the sta

jsc2017e136942 - In the town of Baikonur, Kazakhstan, Expedition 54-55 backup crewmembers Jeanette Epps of NASA, Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos) and Alexander Gerst of the European Space Agency lay flowers Dec. 6 at the sta

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)

Expedition 68 astronaut Frank Rubio of NASA, left, and cosmonauts Sergey Prokopyev and Dmitri Petelin of Roscosmos, along with Expedition 68 backup crewmembers Loral O'Hara of NASA, Oleg Kononenko and Nikolai Chub of Roscosmos, right, are seen at the conclusion of the State Commission meeting to approve the Soyuz launch of Expedition 68 to the International Space Station, Tuesday, Sept. 20, 2022, at the Cosmonaut Hotel in Baikonur, Kazakhstan. The trio are scheduled to launch to the International Space Station aboard the Soyuz MS-22 spacecraft on Sept. 21. Photo Credit: (NASA/Bill Ingalls)

jsc2017e136096 - Expedition 54-55 backup crewmembers Jeanette Epps of NASA (left), Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos, center) and Alexander Gerst of the European Space Agency (right) arrive at the launch site at the Baikonur Cosmodrome in Kazakhstan Dec. 4 following a flight from their training base in Star City, Russia. They are serving as backups to the prime crew, Scott Tingle of NASA, Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos) and Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA), who will launch Dec. 17 on the Soyuz MS-07 spacecraft for a five-month mission on the International Space Station...Andrey Shelepin/Gagarin Cosmonaut Training Center.

jsc2017e137340 - At their Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 54-55 backup crewmembers Jeanette Epps of NASA (left), Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos, center) and Alexander Gerst of the European Space Agency (right) conduct rendezvous and docking runs on a laptop computer simulator Dec. 11. They are serving as backups to Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA), Anton Shkaplerov of Roscosmos and Scott Tingle of NASA who will launch Dec. 17 on the Soyuz MS-07 spacecraft from the Baikonur Cosmodrome for a five month mission on the International Space Station...Andrey Shelepin / Gagarin Cosmonaut Training Center.

Expedition 56 backup crew members Anne McClain of NASA, back left, Oleg Kononenko of Roscosmos, back center, and David Saint-Jacques of the Canadian Space Agency, back right, stand behind prime crew members flight engineer Serena Auñón-Chancellor of NASA, from left, Soyuz Commander Sergey Prokopyev of Roscosmos, front center, and flight engineer Alexander Gerst of ESA (European Space Agency), front right, 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)

From right to left, Japan Aerospace Exploration Agency (JAXA) astronaut Aki Hoshide, NASA astronaut Frank Rubio, and Roscosmos cosmonaut Sergey Prokopyev are seen aboard a helicopter en route to stage for the landing of the SpaceX Dragon Endurance spacecraft with NASA astronauts Anne McClain and Nichole Ayers, JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi, and Roscosmos cosmonaut Kirill Peskov aboard, Saturday, Aug. 9, 2025, in San Diego, Calif.. McClain, Ayers, Onishi, and Peskov are landing in the Pacific Ocean after 147 days in space as part of Expedition 73 aboard the International Space Station. Photo Credit: (NASA/Keegan Barber)

jsc2017e136057 - On a snowy night at Red Square Moscow, Expedition 54-55 backup crewmembers Sergey Prokopyev of the Russian Federal Space Agency (Roscosmos, left), Jeanette Epps of NASA (center) and Alexander Gerst of the European Space Agency (right) pay homage at the Kremlin Wall where Russian space icons are interred in traditional pre-launch ceremonies Nov. 30. They are backups to Anton Shkaplerov of Roscosmos, Scott Tingle of NASA and Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA), who will launch from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-07 spacecraft Dec. 17 for a five-month mission on the International Space Station...Andrey Shelepin/Gagarin Cosmonaut Training Center.

iss069e000995 (April 6, 2023) --- The Soyuz MS-23 crew ship approaches the International Space Station's Prichal docking module after undocking and moving earlier from the Poisk module. Aboard the MS-23 during the 37-minute relocation maneuver were, NASA astronaut Frank Rubio with Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin.

iss057e134727 (Dec. 18, 2018) --- Expedition 56-57 crew members (from left) Alexander Gerst of the ESA (European Space Agency), Serena Auñón-Chancellor of NASA and Sergey Prokopyev from Roscosmos; with Expedition 57-58 crew members David Saint-Jacques of the Canadian Space Agency (CSA), Anne McClain of NASA and Oleg Kononenko from Roscosmos.

iss068e045305 (Feb. 2, 2023) --- Roscosmos cosmonaut and Expedition 68 Commander Sergey Prokopyev replaces orbital plumbing components inside the Zvezda service module's toilet system aboard the International Space Station.

iss068e027634 (Dec. 5, 2022) --- Roscosmos cosmonaut and Expedition 68 Commander Sergey Prokopyev works on components for an Orlan spacesuit aboard the International Space Station's Poisk module. Credit: Roscosmos

iss057-s-002b (Nov. 8, 2017) --- Official crew portrait of Expedition 57 crew members (from left) Serena Auñón-Chancellor of NASA, Alexander Gerst of ESA (European Space Agency) and Sergey Prokopyev of Roscosmos.

iss056e011715 (June 14, 2018) --- Cosmonauts Oleg Artemyev (at bottom) and Sergey Prokopyev work inside the Zvezda service module performing monthly maintenance on the Smart Switch Router. Credit: Roscosmos

iss068e031231 (Dec. 20, 2022) --- Expedition 68 Flight Engineer Anna Kikina and International Space Station Commander Sergey Prokopyev, both from Roscosmos, are pictured working together inside the Zvezda service module.

jsc2017e129181 (July 26, 2017) --- Cosmonaut Sergey Prokopyev of Roscosmos is a backup crew member for Expedition 54-55. He is also the Flight Engineer for Expedition 56-57.