iss058e015351 (Feb. 17, 2019) --- A pair of spacesuits are pictured during servicing work inside the International Space Station's Quest airlock where U.S. spacewalks are staged.

iss072e518456 (Jan. 23, 2025) --- A spacesuit is pictured staged inside the International Space Station's Quest airlock ahead of a spacewalk planned for NASA astronauts Suni Williams and Butch Wilmore. The two spacewalkers are scheduled to exit the Quest airlock on Jan. 30 to remove a radio frequency group antenna assembly and search for microbes outside the orbital outpost.

iss060e038558 (8/21/2019) --- A view of Extravehicular Mobility Units (EMUs) in the Quest Airlock (A/L) aboard the International Space Station (ISS). The Quest Airlock is a pressurized space station module consisting of two compartments attached end-to-end by a connecting bulkhead and hatch. The two compartments are the Equipment Lock which provides the systems for suit maintenance and refurbishment and the Crew Lock which provides the actual exit for performing spacewalks. The airlock is the primary path for spacewalk entry and departure for astronauts wearing U.S. spacesuits. Quest can also support the Russian Orlan spacesuit for spacewalks.

iss072e518461 (Jan. 23, 2025) --- A spacesuit is pictured staged inside the International Space Station's Quest airlock ahead of a spacewalk planned for NASA astronauts Suni Williams and Butch Wilmore. The two spacewalkers are scheduled to exit the Quest airlock on Jan. 30 to remove a radio frequency group antenna assembly and search for microbes outside the orbital outpost. At top, spacesuit gloves are stowed above the spacesuits for easy access when astronauts are preparing to begin a spacewalk.

STS112-E-05101 (10 October 2002) --- Backdropped by a blue and white Earth, the Quest Airlock on the International Space Station (ISS) was photographed by a crewmember. Astronauts David A. Wolf and Piers J. Sellers, both STS-112 mission specialists, used the airlock to exit the station for the first scheduled session of extravehicular activity (EVA) which began at 10:21 a.m. on October 10, 2002.

Photographic documentation of Extravehicular Activity (EVA) 23 Prep in the Quest airlock. Astronaut Karen Nyberg, Expedition 36 flight engineer, holds a microphone and a checklist as she sits in front of the Airlock hatch.

S119-E-006648 (19 March 2009) --- Astronaut Tony Antonelli, STS-119 pilot, uses a communication system in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS036-E-038556 (30 Aug. 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, works on an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station.

ISS037-E-020101 (24 Oct. 2013) --- NASA astronaut Michael Hopkins, Expedition 37 flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station.

ISS040-E-086597 (1 Aug. 2014) --- Two unoccupied Extravehicular Mobility Unit (EMU) spacesuits, photographed by an Expedition 40 crew member, appear to hold stowage containers in the Quest airlock of the International Space Station.

ISS040-E-086600 (1 Aug. 2014) --- Two unoccupied Extravehicular Mobility Unit (EMU) spacesuits, photographed by an Expedition 40 crew member, appear to hold stowage containers in the Quest airlock of the International Space Station.

ISS036-E-038552 (30 Aug. 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, works on an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station.

ISS037-E-020099 (24 Oct. 2013) --- NASA astronaut Michael Hopkins, Expedition 37 flight engineer, speaks in a microphone while working in the Quest airlock of the International Space Station.

At the control of Expedition Two Flight Engineer Susan B. Helms, the newly-installed Canadian-built Canadarm2, Space Station Remote Manipulator System (SSRMS) maneuvers the Quest Airlock into the proper position to be mated onto the starboard side of the Unity Node I during the first of three extravehicular activities (EVA) of the STS-104 mission. The Quest Airlock makes it easier to perform space walks, and allows both Russian and American spacesuits to be worn when the Shuttle is not docked with the International Space Station (ISS). American suits will not fit through Russion airlocks at the Station. The Boeing Company, the space station prime contractor, built the 6.5-ton (5.8 metric ton) airlock and several other key components at the Marshall Space Flight Center (MSFC), in the same building where the Saturn V rocket was built. Installation activities were supported by the development team from the Payload Operations Control Center (POCC) located at the MSFC and the Mission Control Center at NASA's Johnson Space Flight Center in Houston, Texas.

STS104-E-5068 (15 July 2001) --- Backdropped against a blue and white Earth, some 237 miles below, the Quest airlock is in the process of being installed onto the starboard side of Unity Node 1 of the International Space Station (ISS). Astronaut Susan J. Helms, Expedition Two flight engineer, used controls onboard the station to maneuver the Airlock into place with the Canadarm2 or Space Station Remote Manipulator System (SSRMS). This image was recorded with a digital still camera.

STS104-E-5166 (19 July 2001) --- Astronaut James F. Reilly, STS-104 mission specialist, looks over some supplies in the Quest Airlock aboard the International Space Station (ISS). Reilly is one of two assigned space walkers on the STS-104 mission. The third and final scheduled extravehicular activity (EVA) is to utilize the new airlock, marking its first ever usage. The image was recorded with a digital still camera.

S120-E-006449 (25 Oct. 2007) --- Astronauts Doug Wheelock (left), STS-120 mission specialist, and Clay Anderson, Expedition 16 flight engineer, hold cameras in the hatch of the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station.

S120-E-007915 (1 Nov. 2007) --- Astronaut Scott Parazynski, STS-120 mission specialist, floats between two Extravehicular Mobility Unit (EMU) spacesuits in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station.

S120-E-007409 (30 Oct. 2007) --- Astronaut Peggy A. Whitson, Expedition 16 commander, pauses for a photo while working in the Quest Airlock of the International Space Station while Space Shuttle Discovery (STS-120) is docked with the station.

STS104-E-5157 (17 July 2001) --- Astronaut Charles O. Hobaugh, STS-104 pilot, looks over a reference manual in the Quest Airlock aboard the International Space Station (ISS). The image was recorded with a digital still camera.

S120-E-007930 (1 Nov. 2007) --- European Space Agency (ESA) astronaut Paolo Nespoli, STS-120 mission specialist, floats between two Extravehicular Mobility Unit (EMU) spacesuits in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station.

ISS014-E-09859 (14 Dec. 2006) --- Astronaut Sunita L. Williams, Expedition 14 flight engineer, pauses to smile for the camera as she looks over procedures checklists in the Quest Airlock of the International Space Station during flight day six activities for the STS-116 crew.

S120-E-007918 (1 Nov. 2007) --- Astronaut Scott Parazynski, STS-120 mission specialist, floats between two Extravehicular Mobility Unit (EMU) spacesuits in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station.

ISS036-E-022368 (18 July 2013) --- European Space Agency astronaut Luca Parmitano, Expedition 36 flight engineer, works with spacewalk hardware between two Extravehicular Mobility Unit (EMU) spacesuits in the Quest airlock of the International Space Station.

S104-E-5108 (16 July 2001) --- James F. Reilly, STS-104 mission specialist, reads over a checklist in the hatchway of the newly installed Quest Airlock. In the background, cosmonaut Yury V. Usachev of Rosaviakosmos, Expedition Two mission commander, is working in Unity Node 1.

STS104-E-5164 (19 July 2001) --- Astronaut Michael L. Gernhardt, STS-104 mission specialist, floats in the Quest Airlock prior to getting suited for the second of three scheduled STS104 space walks to work on the exterior of the International Space Station (ISS). The image was recorded with a digital still camera.

S104-E-5071 (15 July 2001) --- As the sun sets behind the Earth's horizon, the Expedition Two and STS-104 crews continue to install the Quest Airlock onto the starboard side of Unity Node 1. Susan J. Helms, Expedition Two flight engineer, working in the Destiny U.S. Laboratory, maneuvered the Airlock into place with the Canadarm2, Space Station Remote Manipulator System (SSRMS), while being assisted by Michael L. Gernhardt and James F. Reilly, STS-104 mission specialists, during their first extravehicular activity (EVA).

iss058e011974 (Feb. 7, 2019) --- NASA astronaut Anne McClain works inside the International Space Station's Quest joint airlock. The Expedition 58 Flight Engineer was working on U.S. spacesuit maintenance emptying and refilling water in the suits' cooling loops.

STS104-E-5199 (20 July 2001) --- Astronaut Susan J. Helms, Expedition Two flight engineer, works in the Equipment Lock of Airlock Quest during its internal outfitting on STS-104. The image was recorded with a digital still camera.

ISS014-E-09858 (14 Dec. 2006) --- Attired in his extravehicular mobility unit (EMU) spacesuit, astronaut Robert L. Curbeam, Jr., STS-116 mission specialist, prepares for the mission's second session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station while Space Shuttle Discovery was docked with the station.

STS104-E-5198 (20 July 2001) --- Astronaut Susan J. Helms, Expedition Two flight engineer, works in the Equipment Lock of Airlock Quest during its internal outfitting on STS-104. The image was recorded with a digital still camera.

ISS014-E-13499 (7 Feb. 2007) --- Astronaut Sunita L. Williams, Expedition 14 flight engineer, works with the helmet of her Extravehicular Mobility Unit (EMU) spacesuit in the Quest Airlock of the International Space Station as she prepares for the final of three sessions of extravehicular activity (EVA) in nine days, scheduled for Feb. 8.

Astronaut Robert L. Curbeam, Jr., STS-116 mission specialist, smiles for the camera in the Quest Airlock of the International Space Station (ISS). Curbeam had just completed the mission’s first space walk in which the P6 truss installation was conducted.

S104-E-5104 (16 July 2001) --- Janet L. Kavandi, STS-104 mission specialist, connects cables and hoses from the newly installed Quest Airlock to Unity Node 1. Other STS-104 and Expedition Two crewmembers are visible in the background working in the Airlock.

S104-E-5065 (15 July 2001) --- The newly-installed Candarm2, Space Station Remote Manipulator System (SSRMS), controlled by Susan J. Helms, Expedition Two flight engineer, maneuvers the Quest Airlock in the proper position to be mated onto the starboard side of Unity Node 1 during the first extravehicular activity (EVA) of the STS-104 mission. The Earth backdrops this image, exposed with a digital still camera.

S133-E-008586 (2 March 2011) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, NASA astronaut Alvin Drew, STS-133 mission specialist, enters the International Space Station's Quest airlock as the mission's second spacewalk draws to a close. NASA astronaut Michael Barratt (left), STS-133 mission specialist; and European Space Agency astronaut Paolo Nespoli, Expedition 26 flight engineer, assisted Drew. Photo credit: NASA or National Aeronautics and Space Administration

iss073e0658312 (Sept. 10, 2025) --- Roscosmos cosmonaut and Expedition 73 Commander Sergey Ryzhikov holds a headset inside the International Space Station's Quest airlock. Ryzhikov was conducting a hearing examination frequently conducted inside Quest due to the module's quiet environment. Quest is used primarily to service spacesuits and stage spacewalks.

ISS036-E-019886 (16 July 2013) --- European Space Agency astronaut Luca Parmitano, Expedition 36 flight engineer, attired in an Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the International Space Station’s Quest airlock as the July 16 spacewalk draws to a close. A little more than one hour into the spacewalk, Parmitano reported water floating behind his head inside his helmet. The water was not an immediate health hazard for Parmitano, but Mission Control decided to end the spacewalk early.

ISS036-E-019889 (16 July 2013) --- Russian cosmonaut Fyodor Yurchikhin, Expedition 36 flight engineer, uses a digital still camera at a hatch window of the International Space Station’s Quest airlock to photograph European Space Agency astronaut Luca Parmitano and NASA astronaut Chris Cassidy as the July 16 spacewalk draws to a close. The spacewalk was ended early due to issues with Parmitano’s spacesuit.

S124-E-007218 (8 June 2008) --- A "fish-eye" lens on a digital still camera was used to record this image of astronauts Mark Kelly (left) and Mike Fossum, STS-124 commander and mission specialist, respectively, in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station. Fossum and astronaut Ron Garan (out of frame) were about to begin the mission's third scheduled spacewalk.

S124-E-007204 (8 June 2008) --- A "fish-eye" lens on a digital still camera was used to record this image of astronauts Ron Garan (left) and Mike Fossum (right), both STS-124 mission specialists, as they prepare for the mission's third scheduled session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station. Astronauts Mark Kelly (background), commander, and Greg Chamitoff, Expedition 17 flight engineer, assisted Garan and Fossum.

S124-E-007220 (8 June 2008) --- A "fish-eye" lens on a digital still camera was used to record this image of astronauts Mark Kelly (left) and Mike Fossum, STS-124 commander and mission specialist, respectively, in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station. Fossum and astronaut Ron Garan (out of frame) were about to begin the mission's third scheduled spacewalk.

S124-E-007226 (8 June 2008) --- A "fish-eye" lens on a digital still camera was used to record this image of astronaut Ron Garan, STS-124 mission specialist, in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station. Garan and astronaut Mike Fossum (out of frame) were about to begin the mission's third scheduled spacewalk.

STS104-313-011 (12-24 July 2001) --- Astronaut Michael L. Gernhardt, mission specialist for STS-104, checks out the extravehicular mobility unit (EMU) space suits in the equipment lock of the newly installed Quest airlock on the International Space Station (ISS). Astronauts Gernhardt and James F. Reilly went on to utilize the new airlock to egress the station on the occasion of the third and final space walk of the STS-104 mission.

S119-E-006660 (19 March 2009) --- Astronauts Michael Fincke (left), Expedition 18 commander; and Tony Antonelli, STS-119 pilot, look over procedures checklists in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS007-E-14474 (5 September 2003) --- Astronaut Edward T. Lu, Expedition 7 NASA ISS science officer and flight engineer, floats near the torso portions of the Extravehicular Mobility Unit (EMU) space suits stored in the Quest airlock on the International Space Station (ISS).

ISS018-E-042819 (24 March 2009) --- Astronaut Richard Arnold (left), STS-119 mission specialist, and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 18 flight engineer, pose for a photo in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station.

ISS007-E-14466 (5 September 2003) --- Cosmonaut Yuri I. Malenchenko, Expedition 7 mission commander, sets up a video camera to document a review of one of the Extravehicular Mobility Unit (EMU) space suits in the Quest airlock on the International Space Station (ISS). Malenchenko represents Rosaviakosmos.

STS104-E-5208 (20 July 2001) --- The final closing of the Crew Lock hatch in the Airlock Quest was performed by astronaut Charles O. Hobaugh, pilot, prior to the start of the third and final STS-104 space walk. The image was recorded with a digital still camera.

STS104-E-5206 (20 July 2001) --- The final closing of the Crew Lock hatch in the Airlock Quest was performed by astronaut Charles O. Hobaugh, pilot, prior to the start of the third and final STS-104 space walk. The image was recorded with a digital still camera.

ISS007-E-14475 (5 September 2003) --- Cosmonaut Yuri I. Malenchenko, Expedition 7 mission commander, works with a torso portion of an Extravehicular Mobility Unit (EMU) space suit stored in the Quest airlock on the International Space Station (ISS). Malenchenko represents Rosaviakosmos.

STS104-E-5211 (20 July 2001) --- Astronaut Charles O. Hobaugh, pilot, checks the new Umbilical Interface Assembly and other hardware in the new Equipment Lock of the Airlock Quest prior to the start of the third and final STS-104 space walk. The image was recorded with a digital still camera.

STS104-E-5218 (20 July 2001) --- Astronaut Charles O. Hobaugh, pilot, checks the new Umbilical Interface Assembly and other hardware in the new Equipment Lock of the Airlock Quest prior to the start of the third and final STS-104 space walk. The image was recorded with a digital still camera.

ISS013-E-38326 (17 June 2006) --- Astronaut Jeffrey N. Williams, Expedition 13 NASA space station science officer and flight engineer, works with stowage items as he performs routine housekeeping in the Quest Airlock of the International Space Station. An Extravehicular Mobility Unit (EMU) space suit is visible at left.

iss073e0865402 (Oct. 6, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Mike Fincke performs maintenance tasks inside the International Space Station’s Quest airlock. Behind him, a U.S. spacesuit is secured to a metallic donning structure on the airlock wall, with its gloves removed and a protective cover placed over the helmet.

ISS036-E-037243 (27 Aug. 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station. Cassidy is performing a checkout of the spacesuit worn by European Space Agency astronaut Luca Parmitano during a July 16 spacewalk that was cut short when its helmet began to fill with water. After assembling and powering up the empty suit as if it were about to go out on another spacewalk, Cassidy and Parmitano (out of frame) observed water once again leaking into the helmet. With the issue reproduced, NASA now has a baseline configuration for the crew to begin swapping out parts for additional tests to pinpoint the problem. There are also opportunities to either launch replacement parts on upcoming cargo flights or return parts to Earth for further study once more is known about the cause of the issue.

ISS036-E-037249 (27 Aug. 2013) --- The Extravehicular Mobility Unit (EMU) spacesuit helmet ? worn by European Space Agency astronaut Luca Parmitano during a July 16 spacewalk that was cut short when the helmet began to fill with water ? is captured in a close-up image in the Quest airlock of the International Space Station. After assembling and powering up the empty suit as if it were about to go out on another spacewalk, Parmitano and NASA astronaut Chris Cassidy (both out of frame), both Expedition 36 flight engineers, observed water once again leaking into the helmet. With the issue reproduced, NASA now has a baseline configuration for the crew to begin swapping out parts for additional tests to pinpoint the problem. There are also opportunities to either launch replacement parts on upcoming cargo flights or return parts to Earth for further study once more is known about the cause of the issue.

ISS002-422-025 (13 July 2001) --- Partially obscured by the Canadarm2, or Space Station Remote Manipulator System (SSRMS), arm the Space Shuttle Atlantis (background) moves toward the International Space Station (ISS) during rendezvous operations. Atlantis commander Steven W. Lindsey smoothly docked the shuttle with the orbiting outpost about 240 statute miles above the northeastern coast of South America. With both spacecraft moving at about 17,500 mph, Lindsey moved Atlantis to the station at a relative speed of about a tenth of a foot per second. Docking occurred at 10:08 p.m. (CDT), July 13, 2001. Atlantis brought to the station a new airlock, called Quest, which can be seen in the aft cargo bay.

ISS018-E-042690 (23 March 2009) --- Astronaut Richard Arnold, STS-119 mission specialist, is pictured in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station.

STS112-325-030 (7-18 October 2002) --- Cosmonaut Fyodor N. Yurchikhin, STS-112 mission specialist representing Rosaviakosmos, is pictured in the Quest Airlock on the International Space Station (ISS).

iss072e572297 (Jan. 28, 2025) --- Two spacesuits, with the helmets covered for protection, are staged inside the International Space Station's Quest airlock in preparation for spacewalk that NASA astronauts Suni Williams and Butch Wilmore conducted on Jan. 30, 2025.

iss072e782405 (March 15, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Nick Hague works on a laptop computer inside the International Space Station's Quest airlock with a pair of spacesuits staged behind him.

ISS036-E-019885 (16 July 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, attired in an Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the International Space Station’s Quest airlock as the July 16 spacewalk draws to a close. A little more than one hour into the spacewalk, European Space Agency astronaut Luca Parmitano (out of frame) reported water floating behind his head inside his helmet. The water was not an immediate health hazard for Parmitano, but Mission Control decided to end the spacewalk early.

In this photograph, STS-113 astronaut and mission specialist John B. Herrington participates in the mission's first space walk. The opened hatch of the Quest Airlock can be seen reflected in Herrington's helmet visor. The airlock, located on the starboard side of the Unity Node I on the International Space Station (ISS), makes it easier to perform space walks, and allows both Russian and American space suits to be worn when the Shuttle is not docked with the ISS. American suits will not fit through Russian airlocks at the Station. STS-113, the 16th American assembly flight and 112th overall American flight to the ISS, launched on November 23, 2002 from Kennedy's launch pad 39A aboard the Space Shuttle Orbiter Endeavour. The main mission objective was the installation and activation of the Port 1 Integrated Truss Assembly (P1). The first major component installed on the left side of the Station, the P1 truss provides an additional three External Thermal Control System radiators. Weighing in at 27,506 pounds, the P1 truss is 45 feet (13.7 meters) long, 15 feet (4.6 meters) wide, and 13 feet (4 meters) high. Three space walks, aided by the use of the Robotic Manipulator Systems of both the Shuttle and the Station, were performed in the installation of P1.

S104-E-5106 (16 July 2001) --- From left to right, cosmonaut Yury V. Usachev, Expedition Two mission commander, James S. Voss, Expedition Two flight engineer, and Michael L. Gernhardt, STS-104 mission specialist, discuss procedures for connecting cables and hoses from the newly installed Quest Airlock to Unity Node 1. Usachev represents Rosaviakosmos.

ISS007-E-14470 (5 September 2003) --- Astronaut Edward T. Lu, Expedition 7 NASA ISS science officer and flight engineer, performs routine maintenance on an Extravehicular Mobility Unit (EMU) space suit in the Quest airlock on the International Space Station (ISS). The work represents a mid-term checkout and included emptying and refilling the suit’s water tank and loops, cycling relief valves, checking sensors and collecting data, a leak check and running the suit’s fan for two hours to lubricate it.

ISS007-E-14469 (5 September 2003) --- Astronaut Edward T. Lu, Expedition 7 NASA ISS science officer and flight engineer, performs routine maintenance on an Extravehicular Mobility Unit (EMU) space suit in the Quest airlock on the International Space Station (ISS). The work represents a mid-term checkout and included emptying and refilling the suit’s water tank and loops, cycling relief valves, checking sensors and collecting data, a leak check and running the suit’s fan for two hours to lubricate it.

STS104-E-5188 (20 July 2001) --- The Expedition Two crew poses for an in-flight portrait in the newly- delivered Quest Airlock on the International Space Station (ISS). Flanked by two extravehicular mobility unit (EMU) space suits, are, from left, Susan J. Helms, Yury V. Usachev and James S. Voss. Usachev is commander and Voss and Helms are both flight engineers. This image was recorded by one of the visiting STS-104 crew members using a digital still camera.

ISS007-E-14472 (5 September 2003) --- Astronaut Edward T. Lu, Expedition 7 NASA ISS science officer and flight engineer, performs routine maintenance on an Extravehicular Mobility Unit (EMU) space suit in the Quest airlock on the International Space Station (ISS). The work represents a mid-term checkout and included emptying and refilling the suit’s water tank and loops, cycling relief valves, checking sensors and collecting data, a leak check and running the suit’s fan for two hours to lubricate it.

S114-E-7172 (5 August 2005) --- Astronaut Soichi Noguchi, STS-114 mission specialist representing Japan Aerospace Exploration Agency (JAXA), holds a procedures checklist in the Quest Airlock of the International Space Station. The crewmembers were making final preparations for Space Shuttle Discovery’s scheduled departure on August 6.

iss072e921946 (April 7, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Anne McClain works inside the Quest airlock assembling hardware that will be installed during an upcoming spacewalk to prepare the International Space Station for a new rollout solar array. On either side of McClain, are two spacesuits staged inside Quest being readied for the maintenance spacewalk.

STS112-336-022 (12 October 2002) --- Astronaut Piers J. Sellers (bottom) and cosmonaut Fyodor N. Yurchikhin, both STS-112 mission specialists, pose for a 180-degree head-to-head photo in the Quest Airlock on the International Space Station (ISS). Sellers is attired in his Extravehicular Mobility Unit (EMU) spacesuit. Sellers and astronaut David A. Wolf (out of frame) were preparing to exit the station’s airlock for the mission’s second spacewalk. Yurchikhin represents Rosaviakosmos.

iss072e572188 (Jan. 28, 2025) --- NASA astronaut and Expedition 72 Commander Suni Williams works in the Quest airlock readying a pair of spacesuits that she and NASA astronaut Nick Hague will wear durimg a spacewalk to remove radio communications hardware and search for microbes outside the International Space Station.

ISS005-E-21031 (21 November 2002) --- Astronaut Peggy A. Whitson, Expedition Five NASA ISS science officer, floats near an upper portion of an Extravehicular Mobility Unit (EMU) spacesuit stored in the Quest Airlock on the International Space Station (ISS).

S104-E-5078 (15 July 2001) --- Cosmonaut Yury V. Usachev, Expedition Two mission commander, and Janet L. Kavandi, STS-104 mission specialist, pose in front of the crewlock endcone of the newly installed Quest Airlock. Usachev represents Rosaviakosmos.

ISS009-E-07019 (12 May 2004) --- Astronaut Edward M. (Mike) Fincke, Expedition 9 NASA ISS science officer and flight engineer, works in the Quest airlock on the International Space Station (ISS). Two Extravehicular Mobility Unit (EMU) spacesuits are visible in the foreground.

iss072e487415 (Jan. 16, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Nick Hague is pictured shortly after he exited the International Space Station's Quest airlock beginning a spacewalk to service astrophysics hardware including the NICER X-ray telescope and the Alpha Magnetic Spectrometer.

ISS018-E-042705 (23 March 2009) --- Astronaut Joseph Acaba, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the Quest Airlock of the International Space Station as he prepares for the mission's third scheduled session of extravehicular activity (EVA).

ISS004-E-5190 (December 2001) --- Astronaut Carl E. Walz, Expedition Four flight engineer, floats in the Quest Airlock on the International Space Station (ISS). The image was taken with a digital still camera during early phase of the three-person crew’s scheduled stay on the orbital outpost.

ISS005-E-21029 (21 November 2002) --- Astronaut Peggy A. Whitson, Expedition Five NASA ISS science officer, floats near an upper portion of an Extravehicular Mobility Unit (EMU) spacesuit stored in the Quest Airlock on the International Space Station (ISS).

ISS018-E-042704 (23 March 2009) --- Astronaut Richard Arnold, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, gives a ?thumbs-up? signal as he prepares for the mission's third scheduled session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station.

STS112-336-020 (12 October 2002) --- Astronaut David A. Wolf, STS-112 mission specialist, looks over a procedures checklist in the Quest Airlock on the International Space Station (ISS). Wolf is attired in his Extravehicular Mobility Unit (EMU) spacesuit.

ISS004-E-5182 (December 2001) --- Astronaut Daniel W. Bursch, Expedition Four flight engineer, is photographed among stowage bags in the Quest Airlock on the International Space Station (ISS) during early phase of his scheduled stint on the orbital outpost. The image was taken with a digital still camera.

ISS036-E-037231 (27 Aug. 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station. Cassidy is performing a checkout of the spacesuit worn by European Space Agency astronaut Luca Parmitano during a July 16 spacewalk that was cut short when its helmet began to fill with water. After assembling and powering up the empty suit as if it were about to go out on another spacewalk, Cassidy and Parmitano (out of frame) observed water once again leaking into the helmet. With the issue reproduced, NASA now has a baseline configuration for the crew to begin swapping out parts for additional tests to pinpoint the problem. There are also opportunities to either launch replacement parts on upcoming cargo flights or return parts to Earth for further study once more is known about the cause of the issue.

ISS036-E-037230 (27 Aug. 2013) --- NASA astronaut Chris Cassidy, Expedition 36 flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the Quest airlock of the International Space Station. Cassidy is performing a checkout of the spacesuit worn by European Space Agency astronaut Luca Parmitano during a July 16 spacewalk that was cut short when its helmet began to fill with water. After assembling and powering up the empty suit as if it were about to go out on another spacewalk, Cassidy and Parmitano (out of frame) observed water once again leaking into the helmet. With the issue reproduced, NASA now has a baseline configuration for the crew to begin swapping out parts for additional tests to pinpoint the problem. There are also opportunities to either launch replacement parts on upcoming cargo flights or return parts to Earth for further study once more is known about the cause of the issue.

ISS046e025801 (01/27/2016) --- NASA astronaut Scott Kelly relocates spacewalk hardware and suits inside the Quest airlock on Jan. 27, 2016.

ISS007-E-05859 (28 May 2003) --- Cosmonaut Yuri I. Malenchenko, Expedition Seven mission commander, works with Extravehicular Mobility Unit (EMU) spacesuits in the Quest airlock on the International Space Station (ISS). Today Malenchenko and astronaut Edward T. Lu (out of frame), NASA ISS science officer and flight engineer, performed an EMU spacesuit fit check and don/doff dry-run. The objective was to check out the equipment and provide the crew with training for preparing for a two-person spacewalk without intravehicular (IV) crewmember support, should it become necessary. Malenchenko represents Rosaviakosmos.

iss054e022341 (Jan. 18, 2018) --- NASA astronaut Scott Tingle wears a U.S. spacesuit inside the Quest Airlock preparing for his first spacewalk.

ISS006-E-05008 (28 November 2002) --- Astronaut John B. Herrington, STS-113 mission specialist, wearing his Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the Quest Airlock on the International Space Station (ISS).

STS112-E-05495 (14 October 2002) --- Astronauts David A. Wolf (left) and Piers J. Sellers, STS-112 mission specialists attired in their Extravehicular Mobility Unit (EMU) space suits, are photographed in the Quest Airlock on the International Space Station (ISS) prior to the third scheduled session of extravehicular activity (EVA). Cosmonaut Valery G. Korzun (left), Expedition Five mission commander, and astronaut Pamela A. Melroy, STS-112 pilot, were visible in the background. Korzun represents Rosaviakosmos.

ISS004-E-8044 (20 February 2002) --- Astronaut Daniel W. Bursch, Expedition Four flight engineer, participates in the five-hour, 47-minute space walk on February 20, 2002. He moves near the oxygen and nitrogen tanks on the exterior of Quest Airlock. The square device (partially obscured by Bursch) on the Space Station Remote Manipulator System (SSRMS) or Canadarm2 is the Materials International Space Station Experiment (MISSE). The image was recorded with a digital still camera.

ISS018-E-042724 (23 March 2009) --- Astronaut Richard Arnold, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the Quest Airlock of the International Space Station as he prepares for the mission's third scheduled session of extravehicular activity (EVA). Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 18 flight engineer, is visible at bottom right.

ISS018-E-042717 (23 March 2009) --- Astronaut Richard Arnold, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, shakes hands with astronaut Michael Fincke, Expedition 18 commander, in the Quest Airlock of the International Space Station as he prepares for the mission's third scheduled session of extravehicular activity (EVA).

iss069e008015 (April 28, 2023) --- NASA astronaut Stephen Bowen and UAE (United Arab Emirates) astronaut Sultan Alneyadi (partially obscured) are pictured in their Extravehicular Mobility Units, or spacesuits, exiting the International Space Station's Quest airlock and beginning a spacewalk. The duo would spend seven hours and one minute in the vacuum of space routing cables and installing insulation readying the orbital outpost for its next set of roll-out solar arrays due to be installed after their delivery on the next SpaceX Dragon cargo mission.

iss073e0000415 (April 21, 2025) --- NASA astronauts Anne McClain (bottom) and Nichole Ayers (top), both Expedition 73 Flight Engineers, checkout spacesuit hardware in the Quest airlock and review procedures for a May 1 spacewalk. The spacewalkers will install a modification kit on the International Space Station’s port side truss structure preparing it for a new rollout solar array and relocate an antenna that communicates with commercial spacecraft.

iss069e008039 (April 28, 2023) --- NASA astronaut Stephen Bowen and UAE (United Arab Emirates) astronaut Sultan Alneyadi are pictured in their Extravehicular Mobility Units, or spacesuits, exiting the International Space Station's Quest airlock and beginning a spacewalk. The duo would spend seven hours and one minute in the vacuum of space routing cables and installing insulation readying the orbital outpost for its next set of roll-out solar arrays due to be installed after their delivery on the next SpaceX Dragon cargo mission.

ISS018-E-042703 (23 March 2009) --- Astronaut Joseph Acaba, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, prepares for the mission's third session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station. Astronauts Tony Antonelli (bottom right, mostly out of frame), STS-119 pilot; and Japan Aerospace Exploration Agency?s (JAXA) Koichi Wakata, Expedition 18 flight engineer, assist Acaba.

ISS004-E-8043 (20 February 2002) --- Astronaut Daniel W. Bursch, Expedition Four flight engineer, participates in the five-hour, 47-minute space walk on February 20, 2002. He moves among the oxygen and nitrogen tanks on the exterior of Quest Airlock. The square device (left) on the Space Station Remote Manipulator System (SSRMS) or Canadarm2 is the Materials International Space Station Experiment (MISSE). The image was recorded with a digital still camera.

ISS014-E-19558 (17 April 2007) --- Astronauts Michael E. Lopez-Alegria (left), Expedition 14 commander and NASA space station science officer; Sunita L. Williams, flight engineer; and cosmonaut Mikhail Tyurin, flight engineer representing Russia's Federal Space Agency, adds the Expedition 14 patch to the growing collection of insignias representing crews who have performed spacewalks from the Quest Airlock of the International Space Station.

iss073e0548967 (Aug. 29, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Zena Cardman works inside the International Space Station's Quest airlock and performs pressure and leak checks on spacesuit jetpack components. The jetpacks are attached to the rear of spacesuits and are a safety mechanism a spacewalker would use to maneuver back to the orbital outpost in the unlikely event they became untethered from their worksite.