
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)

JSC2004-E-40629 (17 Aug. 2004) --- Astronaut Joseph M. (Joe) Acaba, mission specialist

Stephanie Shelton, a payload communications manager at NASA's Marshall Space Flight Center, joins NASA astronauts Joe Acaba and Mark Vande Hei for a call to the onboard crew of the International Space Station. Vande Hei and Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team..

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NASA astronauts Joe Acaba and Mark Vande Hei Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team. Astronauts Mark Vande Hei (L) and Astronaut Joe Acaba sign autographs for Kassandra Stephens

NASA astronauts Joe Acaba and Mark Vande Hei Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team. Astronauts Mark Vande Hei (L) and Astronaut Joe Acaba sign autographs for Samantha Gurley.

NASA astronauts Joe Acaba and Mark Vande Hei Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team. Chris Buckley is awarded privilege of hanging Mission 54 placque, shown here with Astronaut Mark Vande Hei (L) and Astronaut Joe Acaba

NASA astronauts Joe Acaba and Mark Vande Hei Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team. Astronauts Mark Vande Hei (L) and Astronaut Joe Acaba sign autographs for Lori Meggs.

NASA astronauts Joe Acaba and Mark Vande Hei Acaba visited Marshall April 11 for their honorary Expedition 54 plaque hanging ceremony and to provide valuable feedback of their on-orbit science investigations with the Payload Operations and Integration Center team. Payload Operations Director Phillipia Simmons with Astronauts Joe Acaba (L) and Mark Vande Hei

jsc2017e108516 (June 30, 2017) --- Expedition 53-54 Flight Engineer and NASA astronaut Joe Acaba.

ISS032-E-022916 (19 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, is pictured in the Destiny laboratory of the International Space Station.

ISS032-E-016872 (8 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works in the Columbus laboratory of the International Space Station.

iss053e102164 (Oct. 16, 2017) --- Astronaut Joe Acaba works on U.S. spacesuit gear inside the Quest airlock of the International Space Station.

ISS032-E-016871 (8 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works in the Columbus laboratory of the International Space Station.

iss053e028974 (Sept. 21, 2017) --- NASA astronaut Joe Acaba works inside the cupola as the space station orbits above the Indian Ocean near Australia.

iss054e014673 (Jan. 5, 2018) --- Astronaut Joe Acaba works on wire connections and other maintenance tasks inside Combustion Integrated Rack gear.

ISS032-E-018089 (15 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, performs the Health Maintenance System (HMS) Eye Exam - PanOptic in the Harmony node of the International Space Station. NASA astronaut Sunita Williams, flight engineer, assisted Acaba.

A participant at a NASA Social in Washington engages in social media as he listens to astronaut Joe Acaba answer questions, Tuesday, Dec. 4, 2012 at NASA Headquarters. NASA astronaut Joe Acaba launched to the International Space Station on a Russian Soyuz spacecraft May 15, 2012, spending 123 days aboard as a flight engineer of the Expedition 31 and 32 crews. He recently returned to Earth on Sept. 17 after four months in low earth orbit. Photo Credit: (NASA/Carla Cioffi)

NASA astronaut Joe Acaba signs autographs while onboard a Russian MI-8 helicopter that is transporting him from the Soyuz landing site outside of Zhezkazgan, Kazakhstan where he and NASA astronaut Joe Acaba, and Russian cosmonaut Alexander Misurkin landed in their Soyuz MS-06 spacecraft Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

iss053e083903 (Oct. 8, 2017) --- Astronaut Joe Acaba poses between two U.S. spacesuits inside the Quest airlock. He will wear one of those spacesuits on a spacewalk scheduled for Oct. 20, 2017. Joining Acaba on the spacewalk Friday morning will be Commander Randy Bresnik.

iss053e119676 (Oct. 20, 2017) --- Flight Engineer and astronaut Joe Acaba is attached to a portable foot restraint and tethered to the International Space Station's truss structure. Acaba was performing maintenance on the Canadarm2 robotic arm during the third of a series of spacewalks that took place during Expedition 53.

iss053e119678 (Oct. 20, 2017) --- Flight Engineer and astronaut Joe Acaba is attached to a portable foot restraint and tethered to the International Space Station's truss structure. Acaba was performing maintenance on the Canadarm2 robotic arm during the third of a series of spacewalks that took place during Expedition 53.

jsc2017e108519 (June 30, 2017) --- Expedition 53-54 crew members (from left) NASA astronaut Joe Acaba, Roscosmos cosmonaut Alexander Misurkin and NASA astronaut Mark Vande Hei.

jsc2025e032542 (March 18, 2025) --- After completing a long-duration science mission aboard the International Space Station, NASA astronaut Nick Hague returns to Johnson Space Center's Ellington Field in Houston with Chief of the Astronaut Office, Joe Acaba and is greeted by Steve Koerner, acting center director. NASA’s SpaceX Crew-9 splashed down at 5:57 p.m. EDT on Tuesday, March 18, in the Gulf of America near Tallahassee, Florida.

NASA astronauts Mark Vande Hei, left, and Joe Acaba, center, meet with the Honor Guard at the Tomb of the Unknowns, Friday, June 15, 2018 at the Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

iss054e001485 (Dec. 19, 2017) --- NASA astronaut Joe Acaba with Biological Research in Canisters - Light Emitting Diode (BRIC-LED) canisters prior to installation in the Destiny Laboratory to provide capabilities for seedling, microbial, or fungal growth investigations.

s119e007111 (March 23, 2009) --- NASA astronaut Joe Acaba is seen during a spacewalk in March 2009. He was working on the Starboard-1 truss structure while space shuttle Discovery was docked to the station during STS-119.

JSC2004-E-21455 (For Release 6 May 2004) --- Joseph M. (Joe) Acaba, one of three mission specialist - educator candidates in NASA's 2004 astronaut class.

ISS032-E-024289 (26 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, uses the Space Linear Acceleration Mass Measurement Device (SLAMMD) in the Columbus laboratory of the International Space Station.

ISS032-E-011881 (4 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, uses a vacuum cleaner during housekeeping operations in the Permanent Multipurpose Module (PMM) of the International Space Station.

ISS032-E-022924 (22 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station.

iss054e023797 (Jan. 26, 2018) --- NASA astronaut Joe Acaba with an Experiment Container (EC) to begin the Plant Gravity Perception experiment, testing the gravity-sensing ability of plants in microgravity.

ISS032-E-008696 (20 July 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, talks on a microphone in the Destiny laboratory of the International Space Station.

iss053e119679 (Oct. 20, 2017) --- Flight Engineer and astronaut Joe Acaba works on the Canadarm2 robotic arm during the third of a series of spacewalks that took place during Expedition 53.

ISS032-E-016881 (10 Aug. 2012) --- NASA astronauts Sunita Williams and Joe Acaba, both Expedition 32 flight engineers, work in the Destiny laboratory of the International Space Station.

ISS031-E-095918 (8 June 2012) --- NASA astronaut Joe Acaba, Expedition 31 flight engineer, cleans surface areas in the Tranquility node of the International Space Station.

Students watch a video about NASA astronaut Joe Acaba during a STEM in 30 event, Wednesday, June 27, 2018 at Smithsonian's National Air and Space Museum in Washington. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-022938 (22 Aug. 2012) --- NASA astronauts Sunita Williams and Joe Acaba, both Expedition 32 flight engineers, pose for a photo with Robonaut 2 humanoid robot in the Destiny laboratory of the International Space Station.

The Space Shuttle Challenger Memorial is seen just after NASA astronaut Joe Acaba placed a flower there, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-009028 (21 July 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, exercises on the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory of the International Space Station.

NASA astronauts Mark Vande Hei, left, and Joe Acaba, center, tour the museum at the Tomb of the Unknowns, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

iss054e052250 (Feb. 20, 2018) --- NASA astronaut Joe Acaba removes Seed Cassettes for the Plant Gravity Perception experiment, which tests the gravity sensing ability of plants in microgravity.

NASA astronauts Joe Acaba, left, and Mark Vande Hei visit the Space Shuttle Challenger and Columbia memorials, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-014904 (9 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works the controls of the Japanese Experiment Module Remote Manipulator System (JEMRMS) in the Kibo laboratory of the International Space Station.

NASA astronauts Mark Vande Hei and Joe Acaba attend the changing of the guards at the Tomb of the Unknown soldier, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-014574 (7 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works on the Combustion Integrated Rack (CIR) in the Destiny laboratory of the International Space Station.

ISS031-E-146487 (26 June 2012) --- NASA astronaut Joe Acaba, Expedition 31 flight engineer, poses for a photo with Robonaut 2 humanoid robot in the Destiny laboratory of the International Space Station.

Students watch a video about NASA astronaut Joe Acaba during a STEM in 30 event, Wednesday, June 27, 2018 at Smithsonian's National Air and Space Museum in Washington. Photo Credit: (NASA/Aubrey Gemignani)

ISS031-E-149757 (28 June 2012) --- NASA astronaut Joe Acaba, Expedition 31 flight engineer, uses a computer while working with extravehicular activity (EVA) tools in the Quest airlock of the International Space Station.

NASA astronauts Joe Acaba, left, and Mark Vande Hei, right, meet with the Honor Guard at the Tomb of the Unknowns, Friday, June 15, 2018 at the Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS031-E-146490 (26 June 2012) --- NASA astronaut Joe Acaba, Expedition 31 flight engineer, poses for a photo with Robonaut 2 humanoid robot in the Destiny laboratory of the International Space Station.

jsc2017e108516_alt (June 30, 2017) --- Portrait of NASA astronaut and Expedition 53-54 Flight Engineer Joe Acaba attired in his Sokol launch and entry suit at the Gagarin Cosmonaut Training Center in Star City, Russia.

ISS032-E-011037 (31 July 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works with a stowage container in the Unity node of the International Space Station.

NASA astronaut Joe Acaba prepares to climb on top of Intuitive Machines’ Moon RACER lunar terrain vehicle to get to a science payload during testing at NASA’s Johnson Space Center. Image Credit: NASA/Josh Valcarcel

ISS031-E-149759 (28 June 2012) --- NASA astronaut Joe Acaba, Expedition 31 flight engineer, works at a robotic workstation in the Destiny laboratory of the International Space Station.

NASA astronaut Joe Acaba raises the solar array panel on Lunar Outpost’s Eagle lunar terrain vehicle during testing at NASA’s Johnson Space Center. Image Credit: NASA/Robert Markowitz

ISS032-E-010076 (22 July 2012) --- Russian cosmonaut Sergei Revin (left) and NASA astronaut Joe Acaba, both Expedition 32 flight engineers, use a computer in the Zvezda Service Module of the International Space Station.

NASA astronaut Joe Acaba places a flower at the Space Shuttle Challenger Memorial, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-014902 (9 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works the controls of the Japanese Experiment Module Remote Manipulator System (JEMRMS) in the Kibo laboratory of the International Space Station.

ISS032-E-009061 (25 July 2012) --- NASA astronauts Joe Acaba and Sunita Williams, both Expedition 32 flight engineers, perform video message recording in the Destiny laboratory of the International Space Station.

ISS032-E-008695 (20 July 2012) --- NASA astronauts Joe Acaba and Sunita Williams, both Expedition 32 flight engineers, work in the Destiny laboratory of the International Space Station.

A participant at a NASA Social in Washington tweets as he listens to astronaut Joe Acaba answer questions about his time living aboard the International Space Station, Tuesday, Dec. 4, 2012 at NASA Headquarters. NASA astronaut Joe Acaba launched to the ISS on a Russian Soyuz spacecraft May 15, 2012, spending 123 days aboard as a flight engineer of the Expedition 31 and 32 crews. He recently returned to Earth on Sept. 17 after four months in low earth orbit. Photo Credit: (NASA/Carla Cioffi)

NASA astronaut and Director of Operations, Star City, Russia, Joe Acaba takes a photograph of NASA astronaut and Astronaut Office Representative Shannon Walker after they each planted a tree during a traditional ceremony at the Cosmonaut Hotel in Karaganda, Kazakhstan, Tuesday, Oct. 2, 2018. Acaba and Walker are in Karaganda to help support the Expedition 56 crew Soyuz landing from the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba speaks about his time onboard the International Space Station during a presentation to students at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba speaks about his time onboard the International Space Station during a presentation to students at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronauts Joe Acaba, left, and Mark Vande Hei, right, present Walt Whitman Middle School Principal Craig Herring with a montage from their Expedition 54 mission, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba answers an audience members question during "What's New in Aerospace," Thursday, June 14, 2018 at the Smithsonian National Air and Space Museum in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

A NASA Social participant tweets during as astronaut Joe Acaba answers questions from the audience at NASA Headquaters, Tuesday, Dec. 4, 2012 in Washington. NASA astronaut Acaba launched to the ISS on a Russian Soyuz spacecraft May 15, 2012, spending 123 days aboard as a flight engineer of the Expedition 31 and 32 crews. He recently returned to Earth on Sept. 17 after four months in low earth orbit. Photo Credit: (NASA/Carla Cioffi)

NASA astronauts Mark Vande Hei, left, and Joe Acaba answer questions during a presentation to students at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba is carried to a medical tent shortly after he, NASA astronaut Mark Vande Hei, and Russian cosmonaut Alexander Misurkin landed in their Soyuz MS-06 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba rests in a chair shortly after he, NASA astronaut Mark Vande Hei, and Russian cosmonaut Alexander Misurkin landed in their Soyuz MS-06 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

jsc2017e114492 (Sept. 1, 2017) --- NASA astronauts Joe Acaba (left) and Shannon Walker pose for pictures by a statue of a peacock at the Kremlin in Moscow Sept. 1. The statue had special significance for them since they are members of the Astronaut Class of 2004 that bears the nickname “The Peacocks”. Acaba, Alexander Misurkin of Roscosmos and Mark Vande Hei of NASA will launch Sept. 13 from the Baikonur Cosmodrome in Kazakhstan Sept. 13 on the Soyuz MS-06 spacecraft for a five and a half month mission on the International Space Station. Credit: NASA/Elizabeth Weissinger

NASA astronauts Mark Vande Hei, left, and Joe Acaba answer questions during a presentation to students at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba speaks about his time onboard the International Space Station, Friday, June 15, 2018 at NASA Headquarters in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba answers an audience members question prior to a presentation, Thursday, June 14, 2018 at the Smithsonian National Air and Space Museum in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronauts Mark Vande Hei, right, and Joe Acaba answer questions during a presentation to students at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

Girls in ceremonial Kazakh dress and Matryoshka Dolls depicting NASA astronaut Joe Acaba, left, Russian cosmonaut Alexander Misurkin, center, and NASA astronaut Mark Vande Hei are seen during a welcome ceremony Wednesday, Feb. 28, 2018 in the Zhezkazgan Airport, Kazakhstan. Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Mark Vande Hei is helped out of the Soyuz MS-06 spacecraft just minutes after he, NASA astronaut Joe Acaba, and Russian cosmonaut Alexander Misurkin landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Mark Vande Hei is carried to a medical tent shortly after he, NASA astronaut Joe Acaba, and Russian cosmonaut Alexander Misurkin landed in their Soyuz MS-06 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba, left, Russian cosmonaut Alexander Misurkin, center, and NASA astronaut Mark Vande Hei sit in chairs outside the Soyuz MS-06 spacecraft after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba speaks about his time onboard the International Space Station, Friday, June 15, 2018 at NASA Headquarters in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Joe Acaba listens to a question from a student during a presentation at Walt Whitman Middle School, Thursday, June 14, 2018 in Alexandria, Va. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

A participant at a NASA Social in Washington listens to astronaut Joe Acaba answer questions about his time living aboard the International Space Station, Tuesday, Dec. 4, 2012 at NASA Headquarters. NASA astronaut Acaba launched to the ISS on a Russian Soyuz spacecraft May 15, 2012, spending 123 days aboard as a flight engineer of the Expedition 31 and 32 crews. He recently returned to Earth on Sept. 17 after four months in low earth orbit. Photo Credit: (NASA/Carla Cioffi)

NASA astronaut Mark Vande Hei rests in a chair shortly after he, NASA astronaut Joe Acaba, and Russian cosmonaut Alexander Misurkin landed in their Soyuz MS-06 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Matryoshka Dolls depicting NASA astronaut Joe Acaba, left, Russian cosmonaut Alexander Misurkin, center, and NASA astronaut Mark Vande Hei are seen during a welcome ceremony Wednesday, Feb. 28, 2018 in the Zhezkazgan Airport, Kazakhstan. Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Joe Acaba speaks about his experiences onboard the International Space Station during "What's New in Aerospace," Thursday, June 14, 2018 at the Smithsonian National Air and Space Museum in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Mark Vande Hei is helped out of the Soyuz MS-06 spacecraft just minutes after he, NASA astronaut Joe Acaba, and Russian cosmonaut Alexander Misurkin, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Russian cosmonaut Alexander Misurkin rests in a chair shortly after he, NASA astronaut Mark Vande Hei, and NASA astronaut Joe Acaba landed in their Soyuz MS-06 spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time.) Acaba, Vande Hei, and Misurkin are returning after 168 days in space where they served as members of the Expedition 53 and 54 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

NASA astronauts Joe Acaba, second from left, and Mark Vande Hei, right, visit the gravesite of former astronaut and U.S. Senator John Glenn, Friday, June 15, 2018 at the Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-011853 (1 Aug. 2012) --- NASA astronaut Joe Acaba (left) and Japan Aerospace Exploration Agency astronaut Aki Hoshide, both Expedition 32 flight engineers, perform an Integrated Cardiovascular (ICV) Resting Echo Scan at the Human Research Facility (HRF) rack in the Columbus laboratory of the International Space Station.

NASA astronaut Mark Vande Hei, center, his wife Julie, left, and NASA astronaut Joe Acaba witness the changing of the guards at the Tomb of the Unknown soldier, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Mark Vande Hei, center, his wife Julie, left, and NASA astronaut Joe Acaba witness the changing of the guards at the Tomb of the Unknown soldier, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Mark Vande Hei, center, his wife Julie, left, and NASA astronaut Joe Acaba witness the changing of the guards at the Tomb of the Unknown soldier, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Mark Vande Hei, center, his wife Julie, right, and NASA astronaut Joe Acaba witness the changing of the guards at the Tomb of the Unknown soldier, Friday, June 15, 2018 at Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-011058 (31 July 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works with a stowage container in the Unity node of the International Space Station. NASA astronaut Sunita Williams, flight engineer, is visible in the background.

iss054e001472 (Dec. 19, 2017) --- NASA astronaut Joe Acaba with Biological Research in Canisters - Light Emitting Diode (BRIC-LED) canisters in the Destiny Laboratory prior to installation to provide capabilities for seedling, microbial, or fungal growth investigations. NASA astronaut Mark Vande Hei is visible in the background.

ISS032-E-022926 (22 Aug. 2012) --- In the International Space Station?s Quest airlock, Japan Aerospace Exploration Agency astronaut Aki Hoshide (attired in an Extravehicular Mobility Unit (EMU) spacesuit) and NASA astronaut Joe Acaba, both Expedition 32 flight engineers, prepare for a spacewalk scheduled for Aug. 30.

NASA astronaut Joe Acaba, left, and Mark Vande Hei, right, watch as Julie Vande Hei, wife of Mark, places a flower at the gravesite of former astronaut and U.S. Senator John Glenn, Friday, June 15, 2018 at the Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Joe Acaba, right, shakes hands with Lieutenant Colonel Jeffery Todd Burroughs, battalion commander, Old Guard, Friday, June 15, 2018 at the Arlington National Cemetery in Arlington, Va. Photo Credit: (NASA/Aubrey Gemignani)

ISS032-E-018205 (13 Aug. 2012) --- Russian cosmonaut Gennady Padalka (right), Expedition 32 commander; and NASA astronaut Joe Acaba, flight engineer, eat a snack near the galley in the Unity node of the International Space Station.