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)

iss072e005803 (Sept. 28, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit poses for a portrait inside the SpaceX Dragon Endeavour spacecraft docked to the Harmony module's space-facing port on the International Space Station.

Astronaut Don Pettit gives an overview of the 2017 Solar Eclipse during the viewing event at the Oregon State Fair Grounds, Salem, Oregon

iss072e920821 (April 4, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit inspects a spacesuit aboard the International Space Station's Quest airlock.

iss072e920819 (April 4, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit inspects a spacesuit aboard the International Space Station's Quest airlock.

iss072e518423 (Jan. 23, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit's reflection is pictured on the helmet visor of a spacesuit in this photograph he took inside the International Space Station's Quest airlock.

Astronaut Don Pettit gives an overview of the 2017 Solar Eclipse viewing event at the Oregon State Farigrounds, Salem, Orgon.

iss072e189187 (Nov. 15, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works on weekend housekeeping duties inside the International Space Station's Kibo laboratory module.

iss072e188983 (Nov. 15, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit takes a break and poses for a portrait aboard the International Space Station's Destiny laboratory module.

iss072e069743 (Oct. 19, 2024) --- The fingers of NASA astronaut and Expedition 72 Flight Engineer Don Pettit are refracted in this sphere of water in the microgravity environment of the International Space Station.

iss072e005823 (Sept. 29, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works on maintenance activities aboard the International Space Station's Harmony module.

iss072e002337 (Sept. 27, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works on maintenance activities aboard the International Space Station's Harmony module.

iss072e009412 (Oct. 1, 2024) --- Expedition 72 Flight Engineers (from left) Don Pettit and Mike Barratt, both NASA astronauts, pose for a portrait together aboard the International Space Station's Destiny laboratory module.

jsc2025e041770 (April 28, 2025) --- NASA astronaut Don Pettit participates in a news conference at NASA's Johnson Space Center in Houston, Texas. He discussed his mission aboard the International Space Station where he lived and worked for 220 days as an Expedition 72 Flight Engineer.

jsc2025e041765 (April 28, 2025) --- NASA astronaut Don Pettit participates in a news conference at NASA's Johnson Space Center in Houston, Texas. He discussed his mission aboard the International Space Station where he lived and worked for 220 days as an Expedition 72 Flight Engineer.

iss072e742488 (March 2, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit injects yellow ink into a ball of water shaped by microgravity and attached to research hardware by surface tension. Pettit was demonstrating simple space physics phenomena inside the International Space Station's Kibo laboratory module.

iss072e645862 (Feb. 21, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit is pictured inside the Soyuz MS-26 spacecraft docked to the International Space Station's Rassvet module. Pettit was participating in a regularly scheduled seat fit check.

iss072e661836 (Feb. 28, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit poses for a portrait inside the International Space Station's Kibo laboratory module. Attached to Pettit's legs are a notebook and a variety of tools used for research and maintenance operations aboard the orbital outpost.

iss072e742508 (March 2, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit stares at a ball of water shaped by microgravity and attached to research hardware by surface tension. Pettit was demonstrating simple space physics phenomena inside the International Space Station's Kibo laboratory module.

iss072e350835 (Dec. 7, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit points a camera outside a window on the International Space Station's Poisk module for a sun photography session.

iss072e782399 (March 15, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit sets up camera hardware to photograph research activities inside the International Space Station's Kibo laboratory module.

ASTRONAUTS BARRY "BUTCH” WILMORE, VICTOR GLOVER, DON PETTIT AND STEPHANIE WILSON SOAR ABOVE TEST STAND 4693 IN #NASA T-38 JETS ON AUG. 9, 2016

iss072e363878 (Dec. 9, 2024) --- NASA astronaut and Expedtion 72 Flight Engineer Don Pettit took this photograph of a U.S. spacesuit helmet with his reflection prominent on the helmet's visor inside the International Space Station's Quest airlock.

ASTRONAUTS BARRY "BUTCH” WILMORE, VICTOR GLOVER, DON PETTIT AND STEPHANIE WILSON SOAR ABOVE TEST STAND 4693 IN #NASA T-38 JETS ON AUG. 9, 2016

iss072e281303 (Nov. 29, 2024) --- Expedition 72 Commander Suni Williams and Flight Engineer Don Pettit, both NASA astronauts, pose for a portrait in front of the Advanced Plant Habitat located inside the International Space Station's Kibo laboratory module. The Plant Habitat provides a large, enclosed, environmentally controlled chamber designed to support commercial and fundamental plant research in microgravity.

iss072e188539 (Nov. 15, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit unpacks and gathers research hardware to be placed outside the International Space Station's Kibo laboratory module. The scientific gear known as MISSE, or Materials International Space Station Experiment, places a variety of materials in the vacuum of space exposing them to the extreme thermal environment, different types of radiation, micrometeoroids, and more to promote the space industry.

iss072e098102 (Oct. 23, 2024) -- NASA astronaut and Expedition 72 Flight Engineer Don Pettit is pictured setting up one of his "Science of Opportunity" experiments aboard the International Space Station. For this specific experiment, Pettit grew thin wafers of water ice using the orbiting lab's freezer, and photographed them in front of a white, blank computer screen and polarizing filter to display the colorful fragments of ice crystals.

iss072e747148 (March 18, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit inserts research hardware into the Combustion Integrated Rack located inside the International Space Station's Destiny laboratory module. Pettit was configuring the SoFIE-MIST, or the Solid Fuel Ignition and Extinction - Material Ignition and Suppression Test, investigation that is exploring the flammability of materials in microgravity to improve spacecraft fire safety.

iss072e747154 (March 18, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit inserts research hardware into the Combustion Integrated Rack located inside the International Space Station's Destiny laboratory module. Pettit was configuring the SoFIE-MIST, or the Solid Fuel Ignition and Extinction - Material Ignition and Suppression Test, investigation that is exploring the flammability of materials in microgravity to improve spacecraft fire safety.

iss072e096874 (Oct. 22, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit looks out a window on the SpaceX Dragon Endeavour spacecraft as the International Space Station orbited 269 miles above the Pacific Ocean of the coast of Chile.

iss072e403381 (Dec. 24, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit removes the small satellite orbital deployer from the Kibo laboratory module's airlock after several CubeSats were deployed outside the International Space Station into Earth orbit for educational research.

iss072e350819 (Dec. 7, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit points a camera outside a window on the International Space Station's Poisk module for a sun photography session with assistance from Roscosmos cosmonaut and Expedition 72 Flight Engineer Ivan Vagner.

iss072e363109 (Dec. 13, 2024) --- NASA astronauts Suni Williams and Don Pettit, Expedition 72 Commander and Flight Engineer respectively, take a break from science maintenance activities and pose for a selfie-portrait aboard the International Space Station's Harmony module.

iss072e033530 (Oct. 10, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works inside the Kibo laboratory module checking out biology imaging hardware, the Tele-Luminescence Analysis System (TELLAS), that can detect space-caused inflammatory changes to tissues and genes in organisms.

iss072e280684 (Nov. 24, 2024) --- NASA astronauts Don Pettit and Suni Williams, Expedition 72 flight engineer and commander respectively, pose for a fun holiday season portrait while speaking on a ham radio inside the International Space Station's Columbus laboratory module.

iss072e861726 (March 28, 2025) --- NASA astronauts Don Pettit and Nichole Ayers, both Expedition 72 Flight Engineers, prepare the NanoRacks External Platform with its grapple fixture attached for stowage aboard the International Space Station's Kibo laboratory module. The commercial research platform housed three different electrical and optical experiments that tested operations while exposed to the vacuum of space.

iss072e517816 (Jan. 21, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit displays HUNCH (High school students United with NASA to Create Hardware) gear inside the International Space Station's Unity module. The HUNCH mission empowers and inspires high school students to learn 21st-century skills and particpate in the design and fabrication of real-world tools for NASA.

iss072e280736 (Nov. 26, 2024) --- NASA astronauts (from left) Don Pettit and Butch Wilmore, both Expedition 72 flight engineers, pack external research hardware removed from the Kibo laboratory module's airlock. The hardware housed a variety of samples exposed to the vacuum of space such as polymers, photovoltaic devices, and more. The samples will be returned to Earth and examined to understand how space radiation, the extreme thermal environment, micrometeoroids, and more affect materials possibly benefitting the space industry.

iss072e404007 (Dec. 27, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit stows plant samples inside a science freezer aboard the International Space Station's Destiny laboratory module. Also called MELFI, or the Minus Eighty-Degree Laboratory Freezer for ISS, the cold stowage research device preserves experiment samples at ultra-cold temperatures in microgravity for later return to Earth and analysis.

iss072e451296 (Jan. 8, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works in the Destiny laboratory module's Combustion Integrated Rack swapping samples of materials to observe how they burn in weightlessness. The investigation taking place inside the International Space Station's CIR enables the safe observation of flames and how they spread in microgravity potentially improving fire safety on crew missions.

iss072e861721 (March 28, 2025) --- NASA astronauts Nichole Ayers and Don Pettit, both Expedition 72 Flight Engineers, extract the NanoRacks External Platform from the Kibo laboratory module's airlock aboard the International Space Station. The commercial research platform housed three different electrical and optical experiments that tested operations while exposed to the vacuum of space.

iss072e576545 (Jan. 30, 2025) --- NASA astronauts Don Pettit (foreground) and Nick Hague, both Expedition 72 flight engineers, are at the controls of the robotics workstation preparing to assist and monitor spacewalkers Suni Williams and Butch Wilmore (not pictured). Williams and Wilmore worked outside the International Space Station during a five-hour and 26-minute spacewalk on Jan. 30, 2025, to remove radio communications hardware and swab external surfaces searching for potential microorganisms.

iss072e397047 (Dec. 19, 2024) --- NASA astronauts (from left) Butch Wilmore and Don Pettit, both Expedition 72 flight engineers, install the European Enhanced Exploration Exercise Device inside the International Space Station's Columbus laboratory module. The futuristic exercise gear will be tested by the station crew using its advanced bicycling, rowing, and resistive capabilities. The small and compact workout gear will be evaluated in the orbital outpost’s microgravity environment before being used on longer term missions to the Moon, Mars, and beyond.

NASA astronaut Don Pettit is carried to a medical tent shortly after he, and Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner landed in their Soyuz MS-26 spacecraft near the town of Zhezkazgan, Kazakhstan on Sunday, April 20, 2025, (April 19 Eastern). The trio returned to Earth after logging 220 days in space as members of Expeditions 71 and 72 aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

iss072e921211 (April 4, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit prepares to deploy a "capture cube" as an Astrobee robotic free-flyer outfitted with tentacle-like grippers prepares to grapple the object inside the International Space Station's Kibo laboratory module.

iss072e921202 (April 4, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit watches as an Astrobee robotic free-flyer outfitted with tentacle-like grippers grapples a "capture cube" inside the International Space Station's Kibo laboratory module.

iss072e921201 (April 4, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit watches as an Astrobee robotic free-flyer outfitted with tentacle-like grippers grapples a "capture cube" inside the International Space Station's Kibo laboratory module.

Expedition 72 NASA astronauts Butch Wilmore, left, Nick Hague, Suni Williams, and Don Pettit pose for a picture with Iztok Mirošič , Ambassador of the Republic of Slovenia to the United States, center, prior to a panel discussion at the Embassy of Slovenia, Wednesday, Sept. 17, 2025, in Washington. Hague, Wilmore, Williams, and Pettit served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 72 NASA astronauts Don Pettit, left, Suni Williams, Nick Hague, Butch Wilmore, and Ken Bowersox, associate administrator for NASA's Space Operations Mission Directorate, speak with Iztok Mirošič, Ambassador of the Republic of Slovenia to the United States, center, prior to a panel discussion at the Embassy of Slovenia, Wednesday, Sept. 17, 2025, in Washington. Hague, Wilmore, Williams, and Pettit served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 72 NASA astronauts Nick Hague, left, Don Pettit, Suni Williams, and Butch Wilmore speak with Iztok Mirošič, Ambassador of the Republic of Slovenia to the United States, center, prior to a panel discussion at the Embassy of Slovenia, Wednesday, Sept. 17, 2025, in Washington. Hague, Wilmore, Williams, and Pettit served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 72 NASA astronauts Suni Williams, left, Don Pettit, Butch Wilmore, and Nick Hague, are seen as acting NASA Administrator Sean Duffy delivers remarks during NASA’s Day on the Hill, Tuesday, Sept. 16, 2025, at the Hart Senate Office Building in Washington. Photo Credit: (NASA/Joel Kowsky)

Expedition 71 backup crew members, Roscosmos cosmonaut Ivan Vagner, left, NASA astronaut Don Pettit, right, and backup Belarus spaceflight participant Anastasia Lenkova, and are seen as the Soyuz rocket is rolled out by train to the launch pad at Site 31, Monday, March 18, 2024, at the Baikonur Cosmodrome in Kazakhstan. Expedition 71 NASA astronaut Tracy Dyson, Roscosmos cosmonaut Oleg Novitskiy, and Belarus spaceflight participant Marina Vasilevskaya are scheduled to launch aboard their Soyuz MS-25 spacecraft on March 21. Photo Credit: (NASA/Bill Ingalls)

On behalf of the Expedition 72 crew NASA astronaut Suni Williams presents Iztok Mirošič, Ambassador of the Republic of Slovenia to the United States to the United States, with a montage including flags of the United States and Slovenia that have been flown in space before participating in a panel discussion at the Embassy of Slovenia, Wednesday, Sept. 17, 2025, in Washington. Williams, Don Pettit, Nick Hague, and Butch Wilmore served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

iss072e010035 (Oct. 12, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit displays Genes In Space-11 samples validating on-orbit Nucleic Acid Sequenced Based Amplification (NASBA), a novel technique to detect specific RNA sequences that can be applied to studying crucial biological processes, such as viral infection, genomic damage, or gene expression during spaceflight. Genes in Space-11 studies how spaceflight may activate retrotransposons, which are DNA fragments that copy and paste themselves throughout a genome, leading to cancer and other diseases. This investigation tests methods for detecting and measuring retrotransposons that may be adapted to detect other RNAs, including those of viruses that cause illness. Understanding the behavior of retrotransposons in microgravity may shed light on the genetic risks, including cancer, from space travel and support development of ways to protect astronauts during missions.

jsc2025e039013 (April 24, 2024)--- Soyuz MS-26 crew members (from left) NASA astronaut Don Pettit and Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner pose for a portrait at the Gagarin Cosmonaut Training Center in Russia. Credit: GCTC

ALABAMA SPEAKER OF THE HOUSE MAC MCCUTCHEON WITH ASTRONAUT DON PETTIT AND TODD MAY

ALABAMA GOVERNOR ROBERT BENTLEY GREETS ASTRONAUT DON PETTIT

T-38 JETS FLY-OVER TEST STAND 4693 AND ASTRONAUTS DON PETTIT AND VICTOR GLOVER VISIT WITH CONSTRUCTION PERSONNEL.

ASTRONAUT DON PETTIT WITH ALABAMA LT. GOVERNOR KAY IVEY AND MSFC CENTER DIRECTOR TODD MAY

NASA astronaut Don Pettit takes a selfie with an attendee following a panel discussion at the Embassy of Slovenia, Wednesday, Sept. 17, 2025, in Washington. Pettit, and fellow NASA astronauts Nick Hague, Butch Wilmore, and Suni Williams served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

TODD MAY, MSFC CENTER DIRECTOR, WITH ALABAMA GOVERNOR ROBERT BENTLEY AND ASTRONAUT DON PETTIT DURING 2017 NASA DAY IN MONTGOMERY, ALABAMA.

ISS031-E-112289 --- Astronaut Don Pettit, Expedition 31 flight engineer, in a special "tent" fashioned to limit light in Cupola, is surround by a battery of stationary cameras.

NASA astronaut Don Pettit is seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 10, 2024 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 72 crew members: NASA astronaut Don Pettit, Roscosmos cosmonauts Alexey Ovchinin, and Ivan Vagner, are scheduled to launch aboard their Soyuz MS-26 spacecraft on September 11. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Don Pettit is seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 10, 2024 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 72 crew members: NASA astronaut Don Pettit, Roscosmos cosmonauts Alexey Ovchinin, and Ivan Vagner, are scheduled to launch aboard their Soyuz MS-26 spacecraft on September 11. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Don Pettit is seen during the State Commission meeting to approve the Soyuz launch of the Expedition 72 crew to the International Space Station, Tuesday, Sept. 10, 2024 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 72 crew members: NASA astronaut Don Pettit, Roscosmos cosmonauts Alexey Ovchinin, and Ivan Vagner, are scheduled to launch aboard their Soyuz MS-26 spacecraft on September 11. Photo Credit: (NASA/Bill Ingalls)

NASA astronaut Don Pettit is seen in quarantine, behind glass, during a press conference, Tuesday, Sept. 10, 2024 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 72 crew members: NASA astronaut Don Pettit, Roscosmos cosmonauts Alexey Ovchinin, and Ivan Vagner, are scheduled to launch aboard their Soyuz MS-26 spacecraft on September 11. Photo Credit: (NASA/Bill Ingalls)

ISS030-E-175968 (19 Feb. 2012) --- A close look at this four-inch polished metal sphere onboard the International Space Station reveals a reflected image of NASA astronaut Don Pettit, Expedition 30 flight engineer. Using a 25-mm lens, Pettit took a series of pictures of the sphere.

ISS030-E-074053 (14 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, prepares for a NASA Education Payload Operations (EPO) activity in the Kibo laboratory of the International Space Station. Pettit is working with a soft Earth ball and an eraser tied to dental floss to demonstrate the space station orbiting Earth.

ISS030-E-074051 (14 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, prepares for a NASA Education Payload Operations (EPO) activity in the Kibo laboratory of the International Space Station. Pettit is working with a soft Earth ball and an eraser tied to dental floss to demonstrate the space station orbiting Earth.

ISS031-E-035391 (12 May 2012) --- NASA astronaut Don Pettit, Expedition 31 flight engineer, took this picture of a four-inch polished metal sphere in the International Space Station’s Destiny laboratory on May 12, 2012 using a 28mm lens. A close look of the sphere reveals a mirrored Pettit.

NASA astronaut Don Pettit signs a certificate and letter before a Silver Snoopy award presentation, Wednesday, Sept. 17, 2025, at NASA’s Goddard Space Flight Center in Greenbelt, Md. Pettit served as part of Expedition 72 onboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Roscosmos cosmonaut Alexey Ovchinin, center, dons his Russian Sokol suit as and fellow crew mates, NASA astronaut Don Pettit, left, and Roscosmos cosmonaut Ivan Vagner, prepare for their Soyuz launch to the International Space Station Wednesday, Sept. 11, 2024 in Baikonur, Kazakhstan. The launch will send Pettit, Ovchinin, and Vagner on a mission to the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

NASA astronaut Don Pettit speaks about his time onboard the International Space Station as part of Expedition 72, Wednesday, Sept. 17, 2025, during an employee engagement event at the Mary W. Jackson NASA Headquarters building in Washington. Nick Hague, Suni Williams, Butch Wilmore, and Don Pettit served as part of Expedition 72 onboard the orbiting laboratory. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Don Pettit speaks about his time onboard the International Space Station as part of Expedition 72, Wednesday, Sept. 17, 2025, during an employee engagement event at the Mary W. Jackson NASA Headquarters building in Washington. Nick Hague, Suni Williams, Butch Wilmore, and Don Pettit served as part of Expedition 72 onboard the orbiting laboratory. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Don Pettit speaks about his time onboard the International Space Station as part of Expedition 72, Wednesday, Sept. 17, 2025, during an employee engagement event at the Mary W. Jackson NASA Headquarters building in Washington. Nick Hague, Suni Williams, Butch Wilmore, and Don Pettit served as part of Expedition 72 onboard the orbiting laboratory. Photo Credit: (NASA/Aubrey Gemignani)

iss072-s-002 (Oct. 27, 2023) --- The official portrait of the International Space Station's Expedition 72 crew. At the top (from left) are, Roscosmos cosmonaut and Flight Engineer Alexey Ovchinin, NASA astronaut and space station Commander Suni Williams, and NASA astronaut and Flight Engineer Butch Wilmore. In the middle row are, Roscosmos cosmonaut and Flight Engineer Ivan Vagner and NASA astronaut and Flight Engineer Don Pettit. In the bottom row are, Roscosmos cosmonaut and Flight Engineer Aleksandr Gorbunov and NASA astronaut and Flight Engineer Nick Hague. Credit: NASA/Bill Stafford and Robert Markowitz

ISS030-E-142862 (13 March 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, enters data in a computer while working with Robonaut 2 humanoid robot in the Destiny laboratory of the International Space Station.

ISS030-E-063915 (6 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, is pictured near a snack floating freely in the Unity node of the International Space Station.

iss072e069824 (Oct. 19, 2024) --- An antacid pill is displayed in the hand of NASA astronaut and Expedition 72 Flight Engineer Don Pettit before being placed inside a sphere of water in the microgravity environment of the International Space Station.

ISS030-E-049727 (22 Jan. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, works among storage containers in the Leonardo Permanent Multipurpose Module (PMM) of the International Space Station.

NASA ASTRONAUT DON PETTIT, RIGHT, A VETERAN OF THREE SPACEFLIGHTS, DISCUSSES CUBESAT TECHNOLOGY WITH UNIVERSITY OF ALABAMA IN TUSCALOOSA STUDENTS, FROM LEFT, DAVID ENGLERT, MADISON KOONTZ AND CONNOR BURLESON.

ISS030-E-074044 (12 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, performs in-flight maintenance on the Potable Water Dispenser (PWD) in the Destiny laboratory of the International Space Station.

iss071e629833 (Sept. 11, 2024) --- The Soyuz MS-26 spacecraft carrying NASA astronaut Don Pettit and Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner approaches the International Space Station.

ISS030-E-074046 (12 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, performs in-flight maintenance on the Potable Water Dispenser (PWD) in the Destiny laboratory of the International Space Station.

ISS031-E-012199 (5 May 2012) --- NASA astronaut Don Pettit, Expedition 31 flight engineer, holds a liquid salt dispenser and chop sticks near the galley in the Unity node of the International Space Station.

ISS030-E-032768 (15 Jan. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, exercises on the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory of the International Space Station.

ISS030-E-235473 (4 Jan. 2012) --- NASA astronauts Dan Burbank (foreground), Expedition 30 commander; and Don Pettit, flight engineer, work in the Kibo laboratory of the International Space Station.

ISS031-E-081812 (31 May 2012) --- NASA astronaut Don Pettit, Expedition 31 flight engineer, is pictured near several still cameras floating freely in the Harmony node of the International Space Station.

iss071e629830 (Sept. 11, 2024) --- The Soyuz MS-26 spacecraft carrying NASA astronaut Don Pettit and Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner approaches the International Space Station.

ISS030-E-063871 (5 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, exercises on the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory of the International Space Station.

ISS031-E-077526 (13 May 2012) --- Russian cosmonaut Oleg Kononenko (right), Expedition 31 commander; and NASA astronaut Don Pettit, flight engineer, enjoy a snack in the Unity node of the International Space Station.

iss071e675047 (Sept. 17, 2024) -- Lakes Argentino (left) and Viedma (right) were photographed by NASA astronaut Don Pettit as the International Space Station orbited 271 miles above.

iss072e159833 (Nov. 10, 2024) -- A long-exposure shot taken by NASA astronaut Don Pettit shows the intricacies of stars in the Milky Way as the International Space Station orbited 253 miles above the Atlantic Ocean.

jsc2024e009742 (Jan. 11, 2024) --- NASA astronaut and backup Soyuz MS-25 Flight Engineer Don Pettit poses for a crew portrait at the Gagarin Cosmonaut Training Center. Credit: GCTC/Andrey Shelepin

ISS030-E-063909 (6 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, holds a snack in the Unity node of the International Space Station.

ISS030-E-270524 (21 April 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, is pictured in a window of the Cupola of the International Space Station, backdropped by Earth’s horizon and the blackness of space.

ISS030-E-235669 (12 April 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, performs ultrasound eye imaging in the Columbus laboratory of the International Space Station.

iss072e069828 (Oct. 19, 2024) --- A sphere of water fizzes after an antacid pill was placed inside by NASA astronaut and Expedition 72 Flight Engineer Don Pettit in the microgravity environment of the International Space Station.

ISS030-E-074042 (12 Feb. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, performs in-flight maintenance on the Potable Water Dispenser (PWD) in the Destiny laboratory of the International Space Station.

iss072e350812 (Dec. 7, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit points a camera outside a window on the International Space Station's Poisk module for a sun photography session.