Retired NASA Flight Director and manager Gene Kranz poses for a portrait next to the Apollo 17 Command Module, Thursday, July 11, 2019 at Space Center Houston in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (JSC2000-03028) Official portrait of astronaut Michael E. Lopez-Alegria, mission specialist.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (JSC2000-03028) Official portrait of astronaut Michael E. Lopez-Alegria, mission specialist.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (S95-057778) Official portrait of astronaut Pamela A. Melroy, pilot.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (JSC2000-03056) Official portrait of astronaut David A. Wolf, mission specialist.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (S95-057778) Official portrait of astronaut Pamela A. Melroy, pilot.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (JSC2000-03056) Official portrait of astronaut David A. Wolf, mission specialist.

S92-48270 (16 Oct. 1992) --- Officials and politicians help celebrate the grand opening of Space Center Houston on Oct. 16, 1992.

jsc2019e023774 --- Lunar sample processors work in the Lunar Lab at NASA's Johnson Space Center in Houston.

jsc2024e077037_alt (Aug. 7, 2025) --- Expedition 74 crew members (from left) NASA astronaut Chris Williams and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergey Mikaev pose for a portrait at NASA's Johnson Space Center in Houston, Texas. Credit: NASA/James Blair

Mark Geyer, Director of NASA's Johnson Space Center, delivers remarks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Photo Credit: (NASA/Joel Kowsky)

Date: 11-5-09 Location: Space Center Houston - Theater Subject: Expedition Special Event featuring EXP 19/20 Flight Engineers Mike Barratt and Gennady Padalka Photographer: Lauren Harnett

JSC2004-E-15422 (30 March 2004) --- Questions came from students and teachers from Alvin, Clear Creek, Friendswood, Galena Park, Galveston and Pasadena Independent School Districts who gathered at Space Center Houston to talk with the Expedition 8 crew aboard the International Space Station on March 30, 2004. Live images of astronaut C. Michael Foale and cosmonaut Alexander Kaleri are seen on the large screen, as the two interact with the ground audience. (Teaching from Space)

KENNEDY SPACE CENTER, FLA. - William (Bill) W. Parsons, named Space Shuttle Program Manager, Johnson Space Center, Houston, in May 2003.

Retired NASA astronaut Scott Kelly poses a portrait, Monday, July 8, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Don Pettit poses for a portrait after donning his spacesuit, Friday, July 12, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

JSC2007-E-03712 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan speaks with students during Space Center Houston's "Meet an Astronaut Day" on Jan. 19. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03703 (19 Jan. 2007) --- Barbara R. Morgan, educator astronaut, is pictured during a demonstration at Space Center Houston. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03715 (19 Jan. 2007) --- Barbara R. Morgan, educator astronaut, is pictured with a number of students during a demonstration at Space Center Houston. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

Local area school children are seen during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

JSC2007-E-03676 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan (left) and Canadian Space Agency astronaut Dafydd R. (Dave) Williams speak to an audience of students and media during a demonstration at Space Center Houston. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03779 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan and Canadian Space Agency astronaut Dafydd R. (Dave) Williams speak to an audience of students and media during a demonstration at Space Center Houston. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03775 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan and Canadian Space Agency astronaut Dafydd R. (Dave) Williams speak to an audience of students and media during a demonstration at Space Center Houston. Morgan has been named as a crew member for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03777 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan and Canadian Space Agency astronaut Dafydd R. (Dave) Williams speak to an audience of students and media during a demonstration at Space Center Houston. Morgan and Williams have been named as crew members for the STS-118 mission, scheduled to launch in the summer of 2007.

JSC2007-E-03769 (19 Jan. 2007) --- Educator astronaut Barbara R. Morgan and Canadian Space Agency astronaut Dafydd R. (Dave) Williams speak to an audience of students and media during a demonstration at Space Center Houston. Morgan and Williams have been named as crew members for the STS-118 mission, scheduled to launch in the summer of 2007. Introducing their fellow crew mates through photographs, Morgan and Williams touched briefly upon each crew member's educational background. The portrait of astronaut Tracy E. Caldwell is visible on the big screen.

NASA astronaut Shane Kimbrough poses for a portrait in the Space Exploration Vehicle (SEV), an engineering concept used to test new technologies for future surface and deep-space exploration vehicles, Tuesday, July 9, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Stephanie Wilson poses for a portrait in NASA Johnson Space Center’s office at Ellington Field, Thursday, July 11, 2019, Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut candidate Frank Rubio poses for a portrait in the anechoic chamber, Wednesday, July 10, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut candidate Kayla Barron is seen after donning her spacesuit, Friday, July 12, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Nicole Mann gives a thumbs up from inside the Orion mockup, Wednesday, July 10, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Stan Love poses for a portrait in the Neutral Buoyancy Lab control room, Monday, July 8, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine delivers remarks during the 2018 Agency Honor Awards ceremony, Thursday, Aug. 2, 2018 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut candidate Kayla Barron poses for a portrait after donning her spacesuit, Friday, July 12, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Nicole Mann poses for a portrait, Tuesday, Sept. 15, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut candidate Loral O’Hara poses for a portrait in the Blue Flight Control Room, Tuesday, July 9, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Kjell Lindgren poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Kayla Barron poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Raja Chari poses for a portrait, Tuesday, Sept. 8, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Victor Glover poses for a portrait, Tuesday, Sept. 15, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Anne McClain poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Frank Rubio poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Stephanie Wilson poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Jonathan Kim poses for a portrait, Tuesday, Sept. 8, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Warren Hoburg poses for a portrait, Thursday, Sept. 17, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Christina Koch poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Jessica Meir poses for a portrait, Tuesday, Sept. 15, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Matthew Dominick poses for a portrait, Wednesday, Sept. 16, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Jasmin Moghbeli poses for a portrait, Tuesday, Sept. 8, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Jessica Watkins poses for a portrait, Tuesday, Sept. 15, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Scott Tingle poses for a portrait, Tuesday, Sept. 8, 2020, in the Blue Flight Control Room at NASA’s Johnson Space Center in Houston. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut candidate Jasmin Moghbeli poses for a portrait in the Systems Engineering Simulator, a real-time, crew-in-the-loop engineering simulator for the space station and advanced spaceflight programs, Tuesday, July 9, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Tracy Caldwell Dyson pauses for a portrait while donning her spacesuit and going under water in the Neutral Buoyancy Lab, Monday, July 8, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (STS114-S-002) -- These four astronauts are in training for the STS-114 mission. Astronauts Eileen M. Collins, mission commander, and James M. Kelly, pilot, flank the two mission specialists -- astronauts Stephen K. Robinson (second from left) and Soichi Noguchi -- who are assigned to spacewalk duty to perform work on the International Space Station. Noguchi represents the Japanese Space agency.

NASA astronaut Christina Koch is seen onboard the International Space Station from the Blue Flight Control Room, Tuesday, July 9, 2019 at NASA's Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

The five crew members of the Space Shuttle Atlantis on the STS-98 mission depart NASA Dryden to return to the Johnson Space Center at Houston. They briefly extended greetings to Dryden staff members on the ramp area behind Dryden's Main Building at a crew ceremony on February 21, 2001.

NASA Kennedy Space Center Director Bob Cabana gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA Johnson Space Center Director Mark Geyer gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA Johnson Space Center Director Mark Geyer gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

Vice President Mike Pence speaks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

Vice President Mike Pence speaks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

Vice President Mike Pence speaks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

NASA Administrator Jim Bridenstine delivers remarks prior to introducing Vice President Mike Pence in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

Vice President Mike Pence speaks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

Vice President Mike Pence speaks in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

NASA Administrator Jim Bridenstine delivers remarks prior to introducing Vice President Mike Pence in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)

NASA astronauts Josh Cassada, foreground, and Suni Williams pose for a photograph inside of the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. The pair was assigned to launch aboard Boeing’s CST-100 Starliner on the company’s first operational mission to the International Space Station in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

Boeing astronaut Chris Ferguson is seen during a NASA event where it was announced that he, NASA astronaut Eric Boe, and NASA astronaut Nicole Aunapu Mann are assigned to the Boeing CST-100 Starliner Crew Test Flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Mike Hopkins is seen during a NASA event where it was announced that he, and NASA astronaut Victor Glover are assigned to the first mission to the International Space Station onboard SpaceX’s Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Victor Glover is seen during a NASA event where it was announced that he, and NASA astronaut Mike Hopkins are assigned to the first mission to the International Space Station onboard SpaceX’s Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Doug Hurley is seen during a NASA event where it was announced that he, and NASA astronaut Bob Behnken are assigned to SpaceX’s Crew Dragon Demo-2 flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Josh Cassada stops to pose for photograph as he exits the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. Cassada, and NASA astronaut Suni Williams were assigned to launch aboard Boeing’s CST-100 Starliner on the company’s first operational mission to the International Space Station in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Bob Behnken is seen during a NASA event where it was announced that he, and NASA astronaut Doug Hurley are assigned to SpaceX’s Crew Dragon Demo-2 flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

Boeing Defense, Space and Security President and CEO Leanne Caret gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Eric Boe is seen during a NASA event where it was announced that he, Boeing astronaut Chris Ferguson, and NASA astronaut Nicole Aunapu Mann are assigned to the Boeing CST-100 Starliner Crew Test Flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Suni Williams is seen during a NASA event where it was announced that she, and NASA astronaut Josh Cassada are assigned to the first mission to the International Space Station onboard Boeing’s CST-100 Starliner, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Nicole Aunapu Mann is seen during a NASA event where it was announced that she, NASA astronaut Eric Boe, and Boeing astronaut Chris Ferguson are assigned to the Boeing CST-100 Starliner Crew Test Flight to the International Space Station, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Suni Williams stops to pose for photograph as she exits the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. Williams and NASA astronaut Josh Cassada were assigned to launch aboard Boeing’s CST-100 Starliner on the company’s first operational mission to the International Space Station in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Josh Cassada is seen during a NASA event where it was announced that he, and NASA astronaut Suni Williams are assigned to the first mission to the International Space Station onboard Boeing’s CST-100 Starliner, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon where announced during the event. Photo Credit: (NASA/Bill Ingalls)

jsc2023e067699_alt (Oct. 27, 2023) --- NASA astronaut and SpaceX Crew-11 Commander Zena Cardman poses for a portrait at NASA's Johnson Space Center in Houston. Texas.

jsc2023e067715_alt (Oct. 27, 2023) --- NASA astronaut and SpaceX Crew-11 Commander Zena Cardman poses for a portrait at NASA's Johnson Space Center in Houston. Texas.

jsc2024e055523 (Aug. 13, 2024) --- NASA astronaut Chris Williams participates in spacewalk training at the Neutral Buoyancy Lab at NASA’s Johnson Space Center in Houston, Texas.

jsc2024e055545 (Aug. 13, 2024) --- NASA astronaut Chris Williams participates in spacewalk training at the Neutral Buoyancy Lab at NASA’s Johnson Space Center in Houston, Texas.

jsc2024e055570 (Aug. 13, 2024) --- NASA astronaut Chris Williams participates in spacewalk training at the Neutral Buoyancy Lab at NASA’s Johnson Space Center in Houston, Texas.

jsc2024e067210_alt (July 17, 2024) --- NASA astronaut Jonny Kim poses for a portrait at NASA’s Johnson Space Center in Houston, Texas. Credit: NASA/Josh Valcarcel

jsc2024e067200_alt (July 17, 2024) --- NASA astronaut Jonny Kim poses for a portrait at NASA’s Johnson Space Center in Houston, Texas. Credit: NASA/Josh Valcarcel

NASA Administrator Jim Bridenstine, center, speaks with Vice President Mike Pence and NASA astronaut Suni Williams during a tour of the Neutral Buoyancy Laboratory at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Photo Credit: (NASA/Joel Kowsky)

NASA astronauts Victor Glover and Mike Hopkins, assigned to fly on the first operational mission of SpaceX’s Crew Dragon, pose inside a mockup of the spacecraft at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the agency’s announcement of their commercial crew assignment Aug. 3. Nine U.S. astronauts were selected for commercial crew flight assignments on the first test flights and operational missions for Boeing’s CST-100 Starliner and SpaceX’s Crew Dragon. Photo Credit: (NASA/Bill Ingalls)

NASA astronauts Bob Behnken, left, and Doug Hurley, assigned to fly on the first test flight of SpaceX’s Crew Dragon, pose inside a mockup of the spacecraft at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the agency’s announcement of their commercial crew assignment Aug. 3. Nine U.S. astronauts were selected for commercial crew flight assignments on the first test flights and operational missions for Boeing’s CST-100 Starliner and SpaceX’s Crew Dragon. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Nicole Mann poses for a photograph as she exits the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. Mann, along with NASA astronaut Eric Boe and Boeing astronaut Chris Ferguson were assigned to launch aboard Boeing’s CST-100 Starliner on the company’s Crew Flight Test targeted for mid-2019 in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

Boeing astronaut Chris Ferguson poses for a photograph as he exits the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. Ferguson, along with NASA astronauts Eric Boe and Nicole Aunapu Mann were assigned to launch aboard Boeing’s CST-100 Starliner on the company’s Crew Flight Test targeted for mid-2019 in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Eric Boe poses for a photograph as he exits the Boeing Mockup Trainer at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the commercial crew flight assignments announcement Aug. 3. Boe, along with NASA astronaut Nicole Aunapu Mann and Boeing astronaut Chris Ferguson were assigned to launch aboard Boeing’s CST-100 Starliner on the company’s Crew Flight Test targeted for mid-2019 in partnership with NASA’s Commercial Crew Program. Photo Credit: (NASA/Bill Ingalls)

SpaceX President and Chief Operation Officer Gwynne Shotwell gives remarks during a NASA event announcing the astronauts assigned to crew the first flight tests and missions of the Boeing CST-100 Starliner and SpaceX Crew Dragon, Friday, Aug. 3, 2018 at NASA’s Johnson Space Center in Houston, Texas. Photo Credit: (NASA/Bill Ingalls)

NASA astronauts Bob Behnken, left, and Doug Hurley, assigned to fly on the first test flight of SpaceX’s Crew Dragon, pose inside a mockup of the spacecraft at NASA’s Johnson Space Center in Houston, Texas on Aug. 2, 2018 ahead of the agency’s announcement of their commercial crew assignment Aug. 3. Nine U.S. astronauts were selected for commercial crew flight assignments on the first test flights and operational missions for Boeing’s CST-100 Starliner and SpaceX’s Crew Dragon. Photo Credit: (NASA/Bill Ingalls)

JOHNSON SPACE CENTER, Houston -- S99-05705 -- Astronaut Scott Kelly, commander

JOHNSON SPACE CENTER, Houston -- S99-05705 -- Astronaut Scott Kelly, commander

Vice President Mike Pence, center, views Sample 15014, which was collected during Apollo 15 with NASA's Apollo Sample Curator Ryan Zeigler, left, and Apollo 17 astronaut and geologist Dr. Harrison Schmitt, right, in Lunar Curation Laboratory at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Sample 15014 is one of nine samples out of the 2,196 collected during the Apollo missions that was sealed inside its container on the Moon and still containes gasses from the Moon. Photo Credit: (NASA/Joel Kowsky)

nhq201706070006 (06/07/2017) --- Vice President Mike Pence takes a group selfie with kids that were in attendance during an event where NASA introduced 12 new astronaut candidates, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)

nhq201706070003 (06/07/2017) --- Vice President Mike Pence delivers remarks during an event where NASA introduced 12 new astronaut candidates, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)