JSC2005-E-20603 (5 Jan. 2005) --- NASA astronaut Mark E. Kelly, commander. Photo credit: NASA or National Aeronautics and Space Administration

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

JSC2011-E-015244 (4 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, speaks to reporters during a news conference at NASA's Johnson Space Center. The briefing was held to discuss Kelly resuming training as the STS-134 shuttle mission commander. With the exception of some proficiency training, Kelly has been on personal leave since Jan. 8 to care for his wife, congresswoman Gabrielle Giffords, who was critically wounded in a Tucson, Ariz. shooting. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-015243 (4 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, speaks to reporters during a news conference at NASA's Johnson Space Center. Peggy Whitson, Astronaut Office chief, is seated next to Kelly. The briefing was held to discuss Kelly resuming training as the STS-134 shuttle mission commander. With the exception of some proficiency training, Kelly has been on personal leave since Jan. 8 to care for his wife, congresswoman Gabrielle Giffords, who was critically wounded in a Tucson, Ariz. shooting. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-015242 (4 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, listens to a reporter?s question during a news conference at NASA's Johnson Space Center. The briefing was held to discuss Kelly resuming training as the STS-134 shuttle mission commander. With the exception of some proficiency training, Kelly has been on personal leave since Jan. 8 to care for his wife, congresswoman Gabrielle Giffords, who was critically wounded in a Tucson, Ariz. shooting. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-015245 (4 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, describes a blue wristband to reporters during a news conference at NASA's Johnson Space Center. The briefing was held to discuss Kelly resuming training as the STS-134 shuttle mission commander. With the exception of some proficiency training, Kelly has been on personal leave since Jan. 8 to care for his wife, congresswoman Gabrielle Giffords, who was critically wounded in a Tucson, Ariz. shooting. The wristband, which has a peace sign, heart and ?Gabby,? was delivered by Giffords? office. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-015241 (4 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, listens to a reporter?s question during a news conference at NASA's Johnson Space Center. Seated next to Kelly are (left to right) Nicole Cloutier-Lemasters, public affairs officer; Brent Jett, Flight Crew Operations Directorate chief and Peggy Whitson, Astronaut Office chief. The briefing was held to discuss Kelly resuming training as the STS-134 shuttle mission commander. With the exception of some proficiency training, Kelly has been on personal leave since Jan. 8 to care for his wife, congresswoman Gabrielle Giffords, who was critically wounded in a Tucson, Ariz. shooting. Photo credit: NASA or National Aeronautics and Space Administration

Captain Mark Kelly, commander of the space shuttle Endeavour’s final mission and husband of retired U.S. Representative Gabrielle Giffords, gives the keynote address during a celebration dinner at Ohio State University honoring the 50th anniversary of John Glenn's historic flight aboard Friendship 7 Monday, Feb. 20, 2012, in Columbus, Ohio. Glenn was the first American to orbit Earth. Photo Credit: (NASA/Bill Ingalls)

Captain Mark Kelly, commander of the space shuttle Endeavour’s final mission and husband of retired U.S. Representative Gabrielle Giffords, gives the keynote address during a celebration dinner at Ohio State University honoring the 50th anniversary of John Glenn's historic flight aboard Friendship 7 Monday, Feb. 20, 2012, in Columbus, Ohio. Glenn was the first American to orbit Earth. Photo Credit: (NASA/Bill Ingalls)

Captain Mark Kelly, commander of the space shuttle Endeavour’s final mission and husband of retired U.S. Representative Gabrielle Giffords, gives the keynote address during a celebration dinner at Ohio State University honoring the 50th anniversary of John Glenn's historic flight aboard Friendship 7 Monday, Feb. 20, 2012, in Columbus, Ohio. Glenn was the first American to orbit Earth. Photo Credit: (NASA/Bill Ingalls)

ISS004-E-5008 (December 2001) --- Astronaut Mark E. Kelly, STS-108 pilot, is photographed on the International Space Station (ISS). The image was taken with a digital still camera.

Retired NASA Astronaut Mark Kelly, left, fist pumps his identical twin brother, NASA Astronaut Scott Kelly through glass as Scott Kelly and fellow crew mates, Russian cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) participate in a press conference while in quarantine Thursday, March 26, 2015, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Mark Kelly, who flew four space shuttle missions and commanded the final flight of space shuttle Endeavour, will participate in biomedical studies on the ground while his twin is on board the orbiting laboratory. Scott Kelly, Kornienko, and Padalka launched to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit (NASA/Bill Ingalls)

JSC2011-E-015838 (9 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, is pictured during an EVA simulation session in a space station mock-up in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

NASA astronaut Mark Kelly speaks on the phone to his twin brother, Expedition 25 Flight Engineer Scott Kelly, after his arrival to the International Space Station on Sunday, Oct. 10, 2010 in Korolev, Russia. Photo Credit: (NASA/Carla Cioffi)

Expedition 43 NASA Astronaut Scott Kelly, left, and his identical twin brother Mark Kelly, pose for a photograph Thursday, March 26, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Scott Kelly, and Russian Cosmonauts Mikhail Kornienko, and Gennady Padalka of the Russian Federal Space Agency (Roscosmos) are scheduled to launch to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit (NASA/Bill Ingalls)

Expedition 43 NASA Astronaut Scott Kelly, left, and his identical twin brother Mark Kelly, pose for a photograph Thursday, March 26, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Scott Kelly, and Russian Cosmonauts Mikhail Kornienko, and Gennady Padalka of the Russian Federal Space Agency (Roscosmos) are scheduled to launch to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit (NASA/Bill Ingalls)

Sen. Mark Kelly, D-Ariz., gives remarks during the ceremonial swearing-in of NASA Deputy Administrator Pam Melroy, Monday, June 21, 2021, at NASA Headquarters Mary W. Jackson Building in Washington. Photo Credit: (NASA/Bill Ingalls)

JSC2011-E-015844 (9 Feb. 2011) --- NASA astronauts Mark Kelly (background), STS-134 commander; and Andrew Feustel, mission specialist, participate in an EVA simulation session in a space station mock-up in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

Expedition 43 NASA Astronaut Scott Kelly's girlfriend, Amiko Kauderer, and Kelly's twin brother, retired NASA Astronaut Mark Kelly, meet with Gagarin Cosmonaut Training Center (GCTC) Chief Epidemiologist Sergei Savin to be medically cleared to visit with Scott Thursday, March 26, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Mark Kelly, who flew four space shuttle missions and commanded the final flight of space shuttle Endeavour, will participate in biomedical studies on the ground while his twin is on board the orbiting laboratory. Scott Kelly, Russian cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) launched to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit (NASA/Bill Ingalls)

Retired NASA Astronaut Mark Kelly photographs his identical twin brother, NASA Astronaut Scott Kelly, as Scott Kelly and fellow crew mates, Russian cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) participate in a press conference, Thursday, March 26, 2015, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Mark Kelly, who flew four space shuttle missions and commanded the final flight of space shuttle Endeavour, will participate in biomedical studies on the ground while his twin is on board the orbiting laboratory. Scott Kelly, Kornienko, and Padalka launched to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit (NASA/Bill Ingalls)

Sen. Mark Kelly, D-Ariz., introduces Pam Melroy, President Biden’s nominee to be the next deputy administrator of NASA, during a Senate Committee on Commerce, Science, and Transportation confirmation hearing, Thursday, May 20, 2021, at the Hart Senate Office Building in Washington. Both Kelly and Melroy are former NASA astronauts. Photo Credit: (NASA/Bill Ingalls)

Pam Melroy, President Biden’s nominee to be the next deputy administrator of NASA, listens as Sen. Mark Kelly, D-Ariz., introduces her during a Senate Committee on Commerce, Science, and Transportation confirmation hearing, Thursday, May 20, 2021, at the Hart Senate Office Building in Washington. Both Kelly and Melroy are former NASA astronauts. Photo Credit: (NASA/Bill Ingalls)

Sen. Mark Kelly, D-Ariz., listens after introducing Pam Melroy, President Biden’s nominee to be the next deputy administrator of NASA, during a Senate Committee on Commerce, Science, and Transportation confirmation hearing, Thursday, May 20, 2021, at the Hart Senate Office Building in Washington. Both Kelly and Melroy are former NASA astronauts. Photo Credit: (NASA/Bill Ingalls)

Sen. Mark Kelly, D-Ariz., gives remarks during a media gather, Thursday, May 18, 2023, on Capitol Hill grounds in Washington. NASA astronauts Reid Wiseman, Victor Glover, Christina Hammock Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen, who will fly around the Moon on NASA’s Artemis II flight test, visited Washington to discuss their upcoming mission with members of Congress and others. Photo Credit: (NASA/Bill Ingalls)

Sen. Mark Kelly, D-Ariz., introduces Vice President Kamala Harris, at the first meeting of the National Space Council, Wednesday, Dec. 1, 2021, at the United States Institute of Peace in Washington. Chaired by Vice President Harris, the council's role is to advise the President regarding national space policy and strategy, and ensuring the United States capitalizes on the opportunities presented by the country’s space activities. Photo Credit: (NASA/Joel Kowsky)

NASA Astronaut and STS-124 commander Mark E. Kelly, right, talks with NASA Associate Administrator Chris Scolese, center, and NASA Associate Administrator for Space Operations Bill Gerstenmaier underneath the space shuttle Discovery shortly after landing on runway 15 of the NASA Kennedy Space Center, Shuttle Landing Facility at 11:15 a.m., Saturday, June 14, 2008 in Cape Canaveral, Florida. Onboard Discovery were NASA astronauts Mark Kelly, commander; Ken Ham, pilot; Mike Fossum, Ron Garan, Karen Nyberg, Garrett Reisman and Japan Aerospace Exploration Agency astronaut Akihiko Hoshide, all mission specialists. During the STS-124 mission, Discovery's crew installed the Japan Aerospace Exploration Agency's large Kibo laboratory and its remote manipulator system leaving a larger space station and one with increased science capabilities. Photo Credit: (NASA/Bill Ingalls)

The Ohio State University President E. Gordon Gee, left, Apollo 11 Astronaut Neil Armstrong, 2nd from left, Former space shuttle astronaut and former Under Secretary of the Air Force Dr. Ron Sega, and Captain Mark Kelly, commander of the space shuttle Endeavour’s final mission and husband of retired U.S. Representative Gabrielle Giffords, right, talk prior to a reception at Ohio State University honoring the 50th anniversary of John Glenn's historic flight aboard Friendship 7 Monday, Feb. 20, 2012, in Columbus, Ohio. Glenn was the first American to orbit Earth. Photo Credit: (NASA/Bill Ingalls)

JSC2011-E-016874 (11 Feb. 2011) --- NASA astronaut Mark Kelly (right foreground), STS-134 commander, and European Space Agency astronaut Roberto Vittori (left foreground), mission specialist, participate in a simulation exercise in the motion-base shuttle mission simulator in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-016861 (11 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, occupies the commander's station during a simulation exercise in the motion-base shuttle mission simulator in the Jake Garn Mission and Simulation Training Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-016872 (11 Feb. 2011) --- NASA astronauts Mark Kelly (left), STS-134 commander, and Gregory H. Johnson, pilot, occupy their respective stations on the forward flight deck during a simulation exercise in the motion-base shuttle mission simulator in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-016868 (11 Feb. 2011) --- NASA astronaut Mark Kelly, STS-134 commander, occupies the commander's station during a simulation exercise in the motion-base shuttle mission simulator in the Jake Garn Mission and Simulation Training Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2011-E-016871 (11 Feb. 2011) --- NASA astronauts Mark Kelly (left), STS-134 commander, and Gregory H. Johnson, pilot, occupy their respective stations on the forward flight deck during a simulation exercise in the motion-base shuttle mission simulator in the Jake Garn Simulation and Training Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

NASA Deputy Administrator Pam Melroy, center, and former astronaut and Senator Mark Kelly, D-Ariz., right, speak with Senator John Hickenlooper, D-Colo, at the Destination Station mobile exhibition on Capitol Hill, Wednesday, Nov. 17, 2021, in Washington. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronauts Christina Hammock Koch, left, Reid Wiseman, and Sen. Mark Kelly, D-Ariz., are seen during a media gather, Thursday, May 18, 2023, on Capitol Hill grounds, in Washington. Wiseman, Hammock Koch, along with NASA astronaut Victor Glover, and CSA (Canadian Space Agency) astronaut Jeremy Hansen, who will fly around the Moon on NASA’s Artemis II flight test, visited Washington to discuss their upcoming mission with members of Congress and others. Photo Credit: (NASA/Bill Ingalls)

Roy D. Bridges Jr. is inducted into the Astronaut Hall of Fame (AHOF) during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida on May 6, 2023. Also inducted into the AHOF Class of 2023 was retired astronaut Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Roy D. Bridges Jr. speaks to guests after he is inducted into the Astronaut Hall of Fame (AHOF) during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida on May 6, 2023. Also inducted into the AHOF Class of 2023 was retired astronaut Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Mark Kelly, at left, is inducted into the Astronaut Hall of Fame (AHOF) by NASA Deputy Administrator Pam Melroy, at the podium, during a ceremony inside the Space Shuttle Atlantis attraction at NASA's Kennedy Space Center Visitor Complex in Florida on May 6, 2023. Also inducted in the AHOF Class of 2023 was retired astronaut Roy D. Bridges Jr. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Mark Kelly, speaks to guests after his induction into the Astronaut Hall of Fame (AHOF) by NASA Deputy Administrator Pam Melroy, during a ceremony inside the Space Shuttle Atlantis attraction at NASA's Kennedy Space Center Visitor Complex in Florida on May 6, 2023. Also inducted in the AHOF Class of 2023 was retired astronaut Roy D. Bridges Jr. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Roy D. Bridges Jr. is inducted into the Astronaut Hall of Fame (AHOF) by Hall of Fame astronaut Dave Leestma during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida on May 6, 2023. Also inducted into the AHOF Class of 2023 was retired astronaut Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

NASA Administrator Bill Nelson speaks to guests during the 2023 U.S. Astronaut Hall of Fame (AHOF) Induction inside the Space Shuttle Atlantis attraction at the Kennedy Space Center Visitor Complex on May 6, 2023. Two veteran space explorers were inducted into the AHOF Class of 2023. They are Roy D. Bridges Jr. and Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida, two space explorers, from left, Roy D. Bridges Jr. and Mark Kelly, are inducted into the U.S. Astronaut Hall of Fame Class of 2023. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Kelvin Manning, deputy director of NASA's Kennedy Space Center in Florida, speaks to guests during the 2023 U.S. Astronaut Hall of Fame (AHOF) Induction inside the Space Shuttle Atlantis attraction at the Kennedy Space Center Visitor Complex on May 6, 2023. Two veteran space explorers were inducted into the AHOF Class of 2023. They are Roy D. Bridges Jr. and Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Howard Schwartz, Kennedy Space Center Visitor Complex vice president of Operations and Guest Engagement, speaks to guests during the 2023 U.S. Astronaut Hall of Fame (AHOF) Induction inside the Space Shuttle Atlantis attraction at the Kennedy Space Center Visitor Complex on May 6, 2023. Two veteran space explorers were inducted into the AHOF Class of 2023. They are Roy D. Bridges Jr. and Mark Kelly. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Bridges and Kelly, 107 astronauts have been inducted into the AHOF.

Former President George H.W. Bush paid a visit to NASA's Johnson Space Center to speak with Expedition 46 Commander Scott Kelly and Flight Engineer Tim Kopra and take a tour of the Space Vehicle Mockup Facility. Kelly’s twin brother, Mark Kelly and his wife, former Congresswoman Gabrielle Giffords were also present. Photo Date: February 5, 2016. Location: Building 30 - ISS Flight Control Room. Photographer: Robert Markowitz

STS-134 Commander Mark Kelly, center, along with his crew speaks to the media following their arrival to Kennedy Space Center, Tuesday, April 26, 2011, in Cape Canaveral, Fla. From left are Mission Specialists Greg Chamitoff, Andrew Feustel, Kelly, Pilot Greg H. Johnson, Mission Specialist Mike Fincke and European Space Agency astronaut Roberto Vittori. The six astronauts for space shuttle Endeavour's STS-134 mission to the International Space Station arrived at Kennedy's Shuttle Landing Facility (SLF) in T-38 jets early Tuesday afternoon. Photo Credit: (NASA/Bill Ingalls)

STS-134 Commander Mark Kelly, center, along with his crew pose for a photograph following their arrival to Kennedy Space Center, Tuesday, April 26, 2011, in Cape Canaveral, Fla. From left are Mission Specialists Greg Chamitoff, Andrew Feustel, Kelly, Pilot Greg H. Johnson, Mission Specialist Mike Fincke and European Space Agency astronaut Roberto Vittori. The six astronauts for space shuttle Endeavour's STS-134 mission to the International Space Station arrived at Kennedy's Shuttle Landing Facility (SLF) in T-38 jets early Tuesday afternoon. Photo Credit: (NASA/Bill Ingalls)

STS-134 Commander Mark Kelly, center, along with his crew speaks to the media following their arrival to Kennedy Space Center, Tuesday, April 26, 2011, in Cape Canaveral, Fla. From left are Mission Specialists Greg Chamitoff, Andrew Feustel, Kelly, Pilot Greg H. Johnson, Mission Specialist Mike Fincke and European Space Agency astronaut Roberto Vittori. The six astronauts for space shuttle Endeavour's STS-134 mission to the International Space Station arrived at Kennedy's Shuttle Landing Facility (SLF) in T-38 jets early Tuesday afternoon. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Victor Glover gives remarks during a media gather as Sen. Mark Kelly, D-Ariz., left, NASA Administrator Bill Nelson, and NASA astronaut Reid Wiseman look on, Thursday, May 18, 2023, on Capitol Hill grounds in Washington. NASA astronauts Reid Wiseman, Victor Glover, Christina Hammock Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen who will fly around the Moon on NASA’s Artemis II flight test visited Washington to discuss their upcoming mission with members of Congress and others. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Christina Hammock Koch gives remarks during a media gather as Sen. Mark Kelly, D-Ariz., left, and NASA astronauts Reid Wiseman and Victor Glover look on, Thursday, May 18, 2023, on Capitol Hill grounds in Washington. NASA astronauts Reid Wiseman, Victor Glover, Christina Hammock Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen who will fly around the Moon on NASA’s Artemis II flight test visited Washington to discuss their upcoming mission with members of Congress and others. Photo Credit: (NASA/Bill Ingalls)

Former astronauts and space explorers, second from left, Mark Kelly, and Roy D. Bridges were inducted into the U.S. Astronaut Hall of Fame Class of 2023 during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida on May 6, 2023. They are surrounded by previous Hall of Fame inductees. Hall of Famer Curt Brown, chairman of the board, Astronaut Scholarship Foundation performed the induction ceremony. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot, or mission specialist who has orbited the earth at least once. Including Altman and Jones, 107 astronauts have been inducted into the AHOF.

STS-134 crew members, Commander Mark Kelly, Mission Specialists Greg Chamitoff, Andrew Feustel, Pilot Greg H. Johnson, Mission Specialist Mike Fincke and European Space Agency astronaut Roberto Vittori wave following their arrival to Kennedy Space Center, Tuesday, April 26, 2011, in Cape Canaveral, Fla. The six astronauts for space shuttle Endeavour's STS-134 mission to the International Space Station arrived at Kennedy's Shuttle Landing Facility (SLF) in T-38 jets early Tuesday afternoon. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama and First Lady Michelle Obama meet with STS-134 space shuttle Endeavor commander Mark Kelly, right, and shuttle astronauts, from left, Andrew Feustel, European Space Agency’s Roberto Vittori, Michael Fincke, Gregory H. Johnson, and Greg Chamitoff, after their launch was scrubbed, Friday, April 29, 2011, at Kennedy Space Center in Cape Canaveral, Fla. Photo Credit: (NASA/Bill Ingalls)

Vice President Richard B. Cheney, center, poses with astronauts from the STS-124 mission at the Vice President's residence Wednesday July 16, 2008, in Washington. Crew members from left are: NASA Astronaut Garrett Reisman, Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide, Mission Specialist Mike Fossum, Mission Specialist Ron Garan, Mission Specialist Karen Nyberg, Pilot Ken Ham and Commander Mark Kelly. Photo Credit: (NASA/Bill Ingalls)

President Barack Obama and First Lady Michelle Obama meet with STS-134 space shuttle Endeavor commander Mark Kelly, right, and shuttle astronauts, from left, Andrew Feustel, European Space Agency’s Roberto Vittori, Michael Fincke, Gregory H. Johnson, and Greg Chamitoff, after their launch was scrubbed, Friday, April 29, 2011, at Kennedy Space Center in Cape Canaveral, Fla. Photo Credit: (NASA/Bill Ingalls)

Expedition 26 Commander Scott Kelly (left) is reunited with his twin brother, Mark Kelly on March 17, 2010, following a flight back to Ellington Field, Houston from Kustanai, Kazakhstan. Scott Kelly landed in Kazakhstan on March 16 with his Russian crewmates in the Soyuz TMA-01M spacecraft after 159 days in space, 157 days on the International Space Station. Mark Kelly is in the final weeks of training as Commander of the final flight of Endeavour, STS-134, that will spend more than a week docked to the ISS. Endeavour is targeted for launch on April 19. Credit: NASA/Rob Navias

JOHNSON SPACE CENTER, TEXAS -- JSC2005-E-20603 -- Official portrait of astronaut Mark E. Kelly, commander.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (JSC2001-01916) -- Official portrait of astronaut Mark E. Kelly, Pilot

Sen. Mark Kelly, D-Ariz., gives remarks during a media gather as CSA (Canadian Space Agency) astronaut Jeremy Hansen, left, NASA Astronaut Christina Hammock Koch, CSA (Canadian Space Agency) President Lisa Campbell, NASA Administrator Bill Nelson, and NASA astronauts Victor Glover and Reid Wiseman, right, look on, Thursday, May 18, 2023, on Capitol Hill grounds in Washington. Wiseman, Glover, Hammock Koch, and Hansen, who will fly around the Moon on NASA’s Artemis II flight test, visited Washington to discuss their upcoming mission with members of Congress and others. Photo Credit: (NASA/Bill Ingalls)

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

PHOTO DATE: 14 April 2010 LOCATION: Bldg 7/SSATA Chamber SUBJECT: Astronaut Scott Kelly during EMU PHOTOGRAPHER: Mark Sowa

ISS045E028258 (09/24/2015) --- NASA astronaut Scott Kelly gives himself a flu shot for an ongoing study on the human immune system. The vaccination is part of NASA’s Twins Study, a compilation of multiple investigations that take advantage of a unique opportunity to study identical twin astronauts Scott and Mark Kelly, while Scott spends a year aboard the International Space Station and Mark remains on Earth.

STS-124 crew members, from left, pilot Kenneth T. Ham, mission specialist Karen L. Nyberg, mission specialist, Japan Aerospace Exploration Agency's (JAXA) Akihiko Hoshide, Commander Mark E. Kelly, mission specialist Michael E. Fossum and mission specialist Ronald J. Garan talk about their STS-124 mission shortly after landing the space shuttle Discovery at 11:15 a.m. on June 14, 2008 at the Kennedy Space Center in Cape Canaveral, Florida. During the 14-day mission the crew of STS-124 installed the Japan Aerospace Exploration Agency's large Kibo laboratory and its remote manipulator system leaving a larger space station and one with increased science capabilities. Discovery also brought home NASA astronaut Garrett Reisman after his 3 month mission onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The STS-134 astronauts from left, European Space Agency's Roberto Vittori, Gregory H. Johnson, pilot; Mark Kelly, commander; Michael Fincke, Greg Chamitoff, and Andrew Feustel all mission specialists, pose for a group photograph shortly after landing onboard the space shuttle Endeavour at the Shuttle Landing Facility (SLF) at Kennedy Space Center, Wednesday, June 1, 2011, in Cape Canaveral, Fla. Endeavour, completing a 16-day mission to outfit the International Space Station, spent 299 days in space and traveled more than 122.8 million miles during its 25 flights. It launched on its first mission on May 7, 1992. Photo Credit: (NASA/Bill Ingalls)

From left to right, SpaceX Crew-1 NASA astronaut Shannon Walker, Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, Senator John Hickenlooper, D-Colo, NASA Deputy Administrator Pam Melroy, Senator Mark Kelly, D-Ariz., and NASA astronaut Victor Glover, pose for a photo at the Destination Station mobile exhibition on Capitol Hill, Wednesday, Nov. 17, 2021, in Washington. Walker, Glover, Noguchi, and NASA astronaut Mike Hopkins, launched on the first crew rotation mission to the International Space Station for SpaceX’s Falcon 9 and Crew Dragon spacecraft as part of the agency’s Commercial Crew Program and spent 168 days in space across Expeditions 64 and 65. Photo Credit: (NASA/Aubrey Gemignani)

S134-E-008751 (23 May 2011) --- NASA astronaut Mark Kelly, STS-134 commander, is pictured on the middeck of space shuttle Endeavour while docked with the International Space Station. Photo credit: NASA

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S134-E-007766 (20 May 2011) --- NASA astronaut Mark Kelly, STS-134 commander, is pictured on the middeck of space shuttle Endeavour while docked with the International Space Station. Photo credit: NASA

S124-E-005418 (1 June 2008) --- Astronaut Mark Kelly, STS-124 commander, works at the commander's station on the forward flight deck of Space Shuttle Discovery during flight day two activities.

S121-E-06259 (9 July 2006) --- Astronaut Mark E. Kelly, STS-121 pilot, holds a camera on the middeck of the Space Shuttle Discovery while docked with the International Space Station.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S124-E-005417 (1 June 2008) --- Astronaut Mark Kelly, STS-124 commander, works at the commander's station on the forward flight deck of Space Shuttle Discovery during flight day two activities.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S121-E-05434 (5 July 2006) --- Astronaut Mark E. Kelly, STS-121 pilot, works at the pilot's station on the flight deck of the Space Shuttle Discovery during Flight Day 2 activities.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

JSC2004-E-54710 (14 December 2004) --- Astronaut Mark E. Kelly, STS-121 pilot, prepares for a flight in a T-38 trainer jet at Ellington Field near Johnson Space Center.

S134-E-007765 (20 May 2011) --- NASA astronaut Mark Kelly, STS-134 commander, works on the middeck of space shuttle Endeavour while docked with the International Space Station. Photo credit: NASA

S121-E-07407 (12 July 2006) --- Astronaut Mark E. Kelly, STS-121 pilot, uses a communication system on the aft flight deck of Space Shuttle Discovery while docked with the International Space Station.

STS121-E-05443 (5 July 2006) --- On Discovery's flight deck, astronaut Mark E. Kelly, pilot, anticipates tomorrow's docking and busy flight day three activities of STS-121, his second space mission.

S121-E-05870 (6 July 2006) --- Astronaut Michael E. Fossum (left), STS-121 mission specialist, and Mark E. Kelly, pilot, float on the middeck on the Space Shuttle Discovery.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S124-E-005585 (2 June 2008) --- Astronaut Mark Kelly, STS-124 commander, works on the aft flight deck of Space Shuttle Discovery during flight day three activities.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S121-E-05914 (7 July 2006) --- Astronaut Mark E. Kelly, STS-121 pilot, uses a communication system as he refers to a procedures checklist on the aft flight deck of the Space Shuttle Discovery.

JSC2004-E-54716 (14 December 2004) --- Astronaut Mark E. Kelly, STS-121 pilot, in a T-38 trainer jet, prepares for a flight at Ellington Field near Johnson Space Center.

S124-E-009906 (11 June 2008) --- Astronaut Mark Kelly, STS-124 commander, looks over a checklist on the flight deck of Space Shuttle Discovery during flight day 12 activities.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S121-E-06482 (12 July 2006) --- Astronauts Stephanie D. Wilson, STS-121 mission specialist, and Mark E. Kelly, pilot, float on the middeck of the Space Shuttle Discovery while docked with the International Space Station.

DATE: 8-5-14 LOCATION: Bldg 9, ISS mockups SUBJECT: Expedition (45/46) commander Scott Kelly during IMAX camera training with IMAX instructors and Mark Turner. PHOTOGRAPHER: Lauren Harnett

S124-E-007686 (7 June 2008) --- Astronaut Mark Kelly, STS-124 commander, looks through the Earth observation window in the new Japanese Experiment Module on the International Space Station.