Special "space" suit for the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator in his paper "Discussion of Existing and Planned Simulators for Space Research," "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.

STS061-S-103 (2-13 DEC 1993) --- Flight director Robert E. Castle uses a lap top computer to aid his busy tasks during one of the five space walks performed to service the Hubble Space Telescope (HST) temporarily berthed in the Space Shuttle Endeavour's cargo bay. STS-61 lead flight director Milt Heflin is at right edge of frame.

Astronaut Thomas D. Jones, mission specialist, dons a space suit prior to participating in contingency space walk simulations at the JSC Weightless Environment Training Facility (WETF). Jones is assisted by Frank Hernandez (left) and suit technician Charles Hudson of Hamilton Standard. Jones suit is weighted to that he can achieve a neutrally buoyant state once under water. Extravehicular tasks are not planned for the STS-59 mission, but a number of chores are rehearsed in case of failure of remote systems to perform those jobs.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (left) walks along the beach at Kennedy Space Center. Accompanying him is Ricky D. O’Quinn, a member of the KSC SWAT team. The congressman concluded his walks along the entire coastline of Florida’s 24th District March 1 on the beach at Kennedy Space Center. During his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (left) and Deputy Director Woodrow Whitlow Jr. take an air boat ride around Kennedy Space Center. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress. Feeney ended his beach walk at the KSC Visitor Complex main entrance.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (center) pauses on his walk along the beach at Kennedy Space Center. With him are Ivan Osores (left), with Security, and Ricky D. O’Quinn, with the KSC SWAT team. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

Test subject wearing the pressurized "space" suit for the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator in his paper "Discussion of Existing and Planned Simulators for Space Research," "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (left) and Deputy Director Woodrow Whitlow Jr. talk on the ground after completing an air boat ride around Kennedy Space Center. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress. Feeney ended his beach walk at the KSC Visitor Complex main entrance.

KENNEDY SPACE CENTER, FLA. - Before going on an air boat ride around Kennedy Space Center, Congressman Tom Feeney and Deputy Director Woodrow Whitlow Jr. are briefed about the trip. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress. Feeney ended his beach walk at the KSC Visitor Complex main entrance.

The Space Shuttle Endeavour concludes mission STS-49 at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, with a 1:57 p.m. (PDT) landing 16 May on Edward's concrete runway 22. The planned 7-day mission, which began with a launch from Kennedy Space Center, Florida, at 4:41 p.m. (PFT), 7 May, was extended two days to allow extra time to rescue the Intelsat VI satellite and complete Space Station assembly techniques originally planned. After a perfect rendezvous in orbit and numerous attempts to grab the satellite, space walking astronauts Pierre Thuot, Rick Hieb and Tom Akers successfully rescued it by hand on the third space walk with the support of mission specialists Kathy Thornton and Bruce Melnick. The three astronauts, on a record space walk, took hold of the satellite and directed it to the shuttle where a booster motor was attached to launch it to its proper orbit. Commander Dan Brandenstein and Pilot Kevin Chilton brought Endeavours's record setting maiden voyage to a perfect landing at Edwards AFB with the first deployment of a drag chute on a shuttle mission.

The Space Shuttle Endeavour concludes mission STS-49 at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, with a 1:57 p.m. (PDT) landing May 16 on Edward's concrete runway 22. The planned 7-day mission, which began with a launch from Kennedy Space Center, Florida, at 4:41 p.m. (PFT), 7 May, was extended two days to allow extra time to rescue the Intelsat VI satellite and complete Space Station assembly techniques originally planned. After a perfect rendezvous in orbit and numerous attempts to grab the satellite, space walking astronauts Pierre Thuot, Rick Hieb and Tom Akers successfully rescued it by hand on the third space walk with the support of mission specialists Kathy Thornton and Bruce Melnick. The three astronauts, on a record space walk, took hold of the satellite and directed it to the shuttle where a booster motor was attached to launch it to its proper orbit. Commander Dan Brandenstein and Pilot Kevin Chilton brought Endeavours's record setting maiden voyage to a perfect landing at Edwards with the first deployment of a drag chute on a shuttle mission.

JSC2003-E-02160 (15 January 2003) --- Chris Looper, EVA officer, monitors data at his console in the station flight control room (BFCR) in Houston’s Mission Control Center (MCC). At the time this photo was taken, astronauts Kenneth D. Bowersox and Donald R. Pettit, Expedition Six mission commander and NASA ISS science officer, respectively, were participating in the mission’s only scheduled session of extravehicular activity (EVA).

JSC2003-E-02167 (15 January 2003) --- Astronaut Stanley G. Love, spacecraft communicator (CAPCOM), monitors data at his console in the station flight control room (BFCR) in Houston’s Mission Control Center (MCC). At the time this photo was taken, astronauts Kenneth D. Bowersox and Donald R. Pettit, Expedition Six mission commander and NASA ISS science officer, respectively, were participating in the mission’s only scheduled session of extravehicular activity (EVA).

KENNEDY SPACE CENTER, FLA. - Walking away from the T-38 jet aircraft that brought them to KSC are STS-114 Mission Specialist Wendy Lawrence and Pilot James Kelly. Lawrence is a new addition to the crew. They and other crew members are at KSC to take part in crew equipment and orbiter familiarization.

STS103-332-021 (19-27 December 1999) --- Astronaut John M. Grunsfeld, who.participated in two of the three STS-103 space walks to service the Hubble Space Telescope (HST), dons an extravehicular mobility unit (EMU) space suit for one of the walks. Grunsfeld is wearing the liquid cooling and ventilation garment that complements the EMU.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Participants cross the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests take off at the start of the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests participate in the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests participate in the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

A speaker addresses Kennedy Space Center employees and guests prior to the start of the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

A participant crosses the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

A participant crosses the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests participate in the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests participate in the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests converse prior to the start of the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

A participant crosses the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

A participant poses as she crosses the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests converse prior to the start of the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

A participant crosses the finish line of Kennedy Space Center’s Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the annual event takes place at the Florida spaceport’s Shuttle Landing Facility runway and offers employees and guests the chance to partake in a two-mile walk or run, a 5K or a 10K.

Kennedy Space Center employees and guests cross the finish line during the Florida spaceport’s annual KSC Walk Run on March 26, 2019. Part of Kennedy’s Safety and Health Days, the event takes place at the Shuttle Landing Facility runway and offers participants the chance to partake in a two-mile walk or run, a 5K or a 10K.

KENNEDY SPACE CENTER, FLA. - At the Florida Commission on the Status of Women held June 7 at the Debus Conference Facility, astronaut Pamela Melroy speaks to attendees. Melroy has served as pilot on two Shuttle flights (STS-92 in 2000 and STS-112 in 2002), and has logged more than 562 hours in space. The commission, through coordinating, researching, communicating, and encouraging legislation, is dedicated to empowering women from all walks of life in achieving their fullest potential, to eliminating barriers to that achievement, and to recognizing women’s accomplishments.

KENNEDY SPACE CENTER, FLA. - At the Florida Commission on the Status of Women held June 7 at the Debus Conference Facility, astronaut Pamela Melroy speaks to attendees. Melroy has served as pilot on two Shuttle flights (STS-92 in 2000 and STS-112 in 2002), and has logged more than 562 hours in space. The commission, through coordinating, researching, communicating, and encouraging legislation, is dedicated to empowering women from all walks of life in achieving their fullest potential, to eliminating barriers to that achievement, and to recognizing women’s accomplishments.

STS109-E-5420 (7 March 2002) --- Flight Day 7 of the STS-109 mission finds astronaut Richard M. Linnehan, mission specialist, back in the shirt-sleeve environment of the Space Shuttle Columbia, just like his space walking partner--astronaut John M. Grunsfeld (out of frame). Two of Grunsfeld's crewmates were about to begin the fourth space walk of the mission to perform special tasks on the Hubble Space Telescope (HST). Linnehan and Grunsfeld will participate in the fifth and final scheduled spacewalk in a little more than 24 hours. It will mark their third shared space walk for the current mission. This image was recorded with a digital still camera.

ISS035-E-036840 (11 May 2013) --- Expedition 35 Flight Engineer Tom Marshburn is captured in a close-up image in the Quest Airlock of the International Space Station prior to a space walk which he shared with Flight Engineer Chris Cassidy (out of frame). The NASA astronauts completed the space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station’s far port truss (P6) leaking ammonia coolant. The pair began the 5-hour, 30-minute space walk at 8:44 a.m.

STS097-377-006 (7 December 2000) --- --- Space walking Endeavour astronauts topped off their scheduled space walk activities with an image of an evergreen tree (left) placed atop the P6 solar array structure, the highest point in their construction project. Astronaut Joseph R. Tanner, mission specialist, then posed for this photo with the "tree" before returning to the shirt-sleeve environment of the Space Shuttle Endeavour. Astronaut Carlos I. Noriega, mission specialist who shared three STS-97 space walks with Tanner, took the photo with a 35mm camera.

STS105-E-5292 (16 August 2001) --- Astronaut Patrick G. Forrester works with the Early Ammonia Servicer (EAS), which he and fellow spacewalker Daniel T. Barry (out of frame) are in the process of installing on a segment of the P6 structure on the International Space Station (ISS). The two mission specialists were participating in the first of two scheduled STS-105 space walks. During the space walk, Discovery's commander Scott J. Horowitz operated the shuttle robot arm, and pilot Frederick W. (Rick) Sturckow choreographed the space walk from the orbiter's flight deck. The image was recorded with a digital still camera.

At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 59 backup crewmembers Drew Morgan of NASA (center) and Luca Parmitano of the European Space Agency (right) walk to a bus Feb. 26 to take them to their plane for a flight to the Baikonur Cosmodrome in Kazakhstan for final pre-launch training. They and Alexander Skvortsov of Roscosmos are the backups to the prime crew, Nick Hague and Christina Koch of NASA and Alexey Ovchinin of Roscosmos, who will launch on March 14, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station. NASA/Beth Weissinger

jsc2018e097269 - At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 58 crewmember David Saint-Jacques of the Canadian Space Agency (right) walks with his wife, Veronique, to a waiting bus Nov. 19 that will take him and his crewmates to a nearby airfield for a flight to their launch site in Baikonur, Kazakhstan. Saint-Jacques, Anne McClain of NASA and Oleg Kononenko of Roscosmos will launch Dec. 3 on the Soyuz MS-11 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station. NASA/Sarah Volkman

jsc2017e135203 - At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 54-55 prime crewmembers Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos, left) and Scott Tingle of NASA (right) walk through a Soyuz spacecraft simulator building Nov. 29 as part of their final crew qualification exam activities. They will launch with Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA) Dec. 17 on the Soyuz MS-07 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a five-month mission on the International Space Station...NASA/Elizabeth Weissinger.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Congressman Tom Feeney (center) relaxes after his walk on Brevard County’s beach north of the launch pads. With him are William Sample (left), president of Space Gateway Support at KSC; Stan Starr, with Dynamac Corp.; Lisa Malone, director of External Affairs at KSC; and Jim Hattaway, associate director of KSC. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

STS061-23-037 (2-13 Dec 1993) --- ESA astronaut Claude Nicollier, mission specialist, is stationed on the Space Shuttle Endeavour's flight deck during one of the five Hubble Space Telescope (HST) servicing space walks. The controls for the Remote Manipulator System (RMS), which played an important role in the space walks, are left of frame center. Two space walkers can be seen through the aft windows.

S93-41574 (17 Aug 1993) --- Astronaut Linda M. Godwin, payload commander, prepares to be submerged in a 25-feet deep pool at the Johnson Space Center's (JSC) Weightless Environment Training Facility (WET-F). Astronauts Godwin and Thomas D. Jones (out of frame at left), mission specialist, are using the WET-F to train for contingency space walks for their STS-59 Space Shuttle Endeavour mission next year. No space walks are planned for the flight.

STS109-E-5225 (4 March 2002) --- Astronaut John M. Grunsfeld, payload commander, signals readiness for the first the first of his assigned STS-109 space walks to perform work on the Hubble Space Telescope (HST). Astronauts Grunsfeld and Richard M. Linnehan moments later egressed the Space Shuttle Columbia's airlock, eventually replacing the giant telescope’s starboard solar array during a space walk that ended at 7:38 a.m. (CST) or 13:38 GMT March 4, 2002.

STS109-E-5621 (5 March 2002) --- Astronaut Richard M. Linnehan, mission specialist, monitors the STS-109 mission's second space walk from the aft flight deck of the Space Shuttle Columbia. Astronauts James H. Newman and Michael J. Massimino were working on the Hubble Space Telescope (HST), temporarily captured in the shuttle's cargo bay. Linnehan had participated in the mission's first space walk on the previous day. This image was recorded with a digital still camera.

STS109-E-5290 (4 March 2002) --- Astronaut John M. Grunsfeld, payload commander, returns to the shirt-sleeve environment of the Space Shuttle Columbia's aft flight deck. Having completed a seven-hour space walk, Grunsfeld enters data in a lap top computer. Astronauts Grunsfeld and Richard M. Linnehan successfully replaced the Hubble Space Telescope's starboard solar array and are scheduled for two more space walks this week. The image was recorded with a digital still camera.

S93-41572 (17 Aug 1993) --- Astronaut Linda M. Godwin, payload commander, prepares to donn her helmet before being submerged in a 25-feet deep pool at the Johnson Space Center's (JSC) Weightless Environment Training Facility (WET-F). Astronauts Godwin and Thomas D. Jones, mission specialist, are using the WET-F to train for contingency space walks for their Space Shuttle Endeavour mission next year. No space walks are planned for the flight.

STS061-58-033 (7 Dec 1993) --- Anchored to the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, astronaut Jeffrey A. Hoffman works with the replacement Wide Field/Planetary Camera (WF/PC II) for the Hubble Space Telescope (HST) during the third of five space walks. Astronaut F. Story Musgrave, who joined Hoffman for three of the five space walks, helps with alignment at center frame.

STS098-331-0017 (7-20 February 2001) --- In the grasp of the shuttle's remote manipulator system (RMS) robot arm, the Destiny laboratory is moved from its stowage position in the cargo bay of the Space Shuttle Atlantis. The photo was taken by astronaut Thomas D. Jones, who was participating in one of three STS-98/5a space walks at the time. Astronaut Robert L. Curbeam (out of frame) also made the three space walks.

STS061-38-014 (9 Dec 1993) --- Astronaut F. Story Musgrave gets assistance from astronaut Thomas D. Akers while suiting up for the final space walk on the eleven-day, Hubble Space Telescope (HST) servicing mission. Musgrave joined astronaut Jeffrey A. Hoffman (out of frame) on three space walks, while Akers teamed with astronaut Kathryn D. Thornton for two.

ISS035-E-037728 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (right) and Tom Marshburn completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037044 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy takes a self portrait, as he and Tom Marshburn (seen partially in Cassidy's helmet visor) accomplished a space walk on May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m. and completed it at 2:14 p.m. EDT.

ISS035-E-040239 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037347 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured at conclusion of the extravehicular activity in the Quest Airlock) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-036810 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (left) and Tom Marshburn completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037030 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

STS109-E-5244 (4 March 2002) --- Astronauts John M. Grunsfeld (red stripes on suit), payload commander, and Richard M. (Rick) Linnehan, mission specialist, participate in the first of their assigned STS-109 space walks to perform work on the Hubble Space Telescope (HST). The two went on to replace the giant telescope’s starboard solar array. Their seven-hour space walk ended at 7:38 a.m. (CST) or 13:38 GMT March 4, 2002.

ISS035-E-036990 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-038129 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (foreground) and Tom Marshburn, seen here working during a period of darkness, completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037731 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-040238 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-036815 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (left) and Tom Marshburn completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-040237 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037733 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037725 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (right) and Tom Marshburn completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

STS082-310-017 (15 Feb. 1997) --- This wide shot of the Hubble Space Telescope (HST) in Discovery's cargo bay, backdropped against Australia, was taken during the third STS-82 space walk to service the orbiting observatory. Astronaut Steven L. Smith (left of center)works near the foot restraint of the Remote Manipulator System (RMS). Astronaut Mark C. Lee, payload commander who shared space walk chores with Smith, was out of frame.

ISS035-E-036992 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (pictured) and Tom Marshburn (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

S132-E-008918 (21 May 2010) --- NASA astronaut Michael Good, STS-132 mission specialist, is pictured in the shuttle's forward cargo bay during the flight's final space walk. The photograph was made through one of Atlantis' aft flight deck windows. Crewmate Garrett Reisman (out of frame) joined Good for the May 21 space walk. Photo credit: NASA or National Aeronautics and Space Administration

ISS035-E-037027 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-036825 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-037011 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

STS097-376-029 (7 December 2000) --- Space walking Endeavour astronauts topped off their scheduled space walk activities with an image of an evergreen tree placed atop the P6 solar array structure, the highest point in their construction project. They then took this photo of the "tree" before returning to the shirt-sleeve environment of the Space Shuttle Endeavour.

ISS035-E-037002 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy takes a self portrait, as he and Tom Marshburn (seen partially in Cassidy's helmet visor) accomplished a space walk on May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m. and completed it at 2:14 p.m. EDT.

ISS035-E-037414 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

STS102-E-5124 (11 March 2001) --- Astronaut Susan J. Helms works at the Destiny laboratory during the first STS-102 space walk. This extravehicular activity (EVA) by mission specialists Helms and James S. Voss, two thirds of the exchange crew for the International Space Station (ISS), will be followed by another space walk involving two other STS-102 mission specialists. This photo was taken with a digital still camera.

ISS035-E-037726 (11 May 2013) --- Expedition 35 Flight Engineers Chris Cassidy (right) and Tom Marshburn completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station's far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

ISS035-E-036829 (11 May 2013) --- Expedition 35 Flight Engineers Tom Marshburn (pictured) and Chris Cassidy (out of frame) completed a space walk at 2:14 p.m. EDT May 11 to inspect and replace a pump controller box on the International Space Station?s far port truss (P6) leaking ammonia coolant. The two NASA astronauts began the 5-hour, 30-minute space walk at 8:44 a.m.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Congressman Tom Feeney (right) talks with Bruce Melnick (left), vice president for Boeing Florida Operations at KSC. Feeney conducted a walk down the coastline of Florida’s 24th District on several days during January and February, concluding March 1 at Kennedy Space Center. On his walks, Feeney met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

Vice President Mike Pence, center, and NASA astronaut Reid Wiseman, left, and NASA astronaut Pat Forrester, right, walk out of the historic crew doors at Kennedy Space Center's (KSC) Operations and Checkout Building on Thursday, July 6, 2017, in Cape Canaveral, Florida. These are the same doors that Apollo and space shuttle astronauts walked through on their way to the launch pad. Photo Credit: (NASA/Aubrey Gemignani)

STS097-327-033 (30 Nov.-11 Dec. 2000) --- Astronauts Joseph R. Tanner (left) and Carlos I. Noriega, both mission specialists, who participated in three STS-97 space walks, don their extravehicular mobility unit (EMU) space suits for one of the walks. Tanner and Noriega are wearing the liquid cooling and ventilation garment that complements the EMU.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (left) jogs along the beach at Kennedy Space Center. Accompanying him is Ricky D. O’Quinn, a member of the KSC SWAT team. In the background is Ivan Osores, with Security. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Congressman Tom Feeney (left) talks with William Sample (right), president of Space Gateway Support. In the center is the Congressman’s wife, Ellen. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Congressman Tom Feeney (right) greets William Sample, president of Space Gateway Support. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (right) jogs along the beach at Kennedy Space Center. Accompanying him is Ricky D. O’Quinn, a member of the KSC SWAT team. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - Congressman Tom Feeney (left) jogs along the beach at Kennedy Space Center. Accompanying him is Ricky D. O’Quinn, a member of the KSC SWAT team. Behind them is Ivan Osores, with Security. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

ISS01-E-5356 (14 February 2001) --- Astronaut Robert L. Curbeam, STS-98 mission specialist, floats above the longerons of the cargo bay on the Space Shuttle Atlantis during the final of three STS-98/5a space walks. Partially obscured behind Curbeam is astronaut Thomas D. Jones, his colleague and partner for all three walks. The scene was recorded with a digital still camera.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Congressman Tom Feeney (right) talks with Bruce Melnick (left), vice president for Boeing Florida Operations at KSC, and Bill Pickavance, vice president, associate program manager of Florida Operations, United Space Alliance. During January and February, Congressman Feeney traveled the entire coastline of Florida’s 24th District, and concluded his walks March 1 in Brevard County. On his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

KENNEDY SPACE CENTER, FLA. - At the Beach House, Deputy Director Woodrow Whitlow Jr. greets Glenn Vera, with Florida Spaceport Authority. The two joined Congressman Tom Feeney who concluded his walks along the entire coastline of Florida’s 24th District March 1 on the beach at Kennedy Space Center. During his walks, he met with constituents and community leaders to discuss legislative issues that will be addressed by the 108th Congress.

STS109-322-021 (6 March 2002) --- Astronaut Richard M. Linnehan, STS-109 mission specialist, participates in the third of five space walks to perform work on the Hubble Space Telescope (HST). The third STS-109 extravehicular activity (EVA) marked the second of three for Linnehan, who was joined by astronaut John M. Grunsfeld on all three. On this particular walk, astronauts Linnehan and Grunsfeld turned off the telescope in order to replace the heart of it power system.

KENNEDY SPACE CENTER, FLA. - In the Orbiter Processing Facility,Scott Thurston (far left), Crew Exploration Vehicle manager in the Shuttle Processing Directorate, gives a personal tour to U.S. Vice President Dick Cheney (center) and his family. They are walking underneath the orbiter Atlantis. Thurston previously was the NASA flow director for Atlantis. Walking next to Cheney is Shana Dale, NASA deputy administrator. Cheney flew in to view the launch of Space Shuttle Discovery on mission STS-121. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. - The STS-114 mission crew walks through the Orbiter Processing Facility looking at the tiles underneath Atlantis. From left are Mission Specialists Andy Thomas, Stephen Robinson, Soichi Noguchi and Charles Camarda (pointing); Commander Eileen Collins; and Mission Specialist Wendy Lawrence. At far right Glenda Laws, EVA Task Leader, with United Space Alliance at Johnson Space Center. Not seen is Pilot James Kelly. Noguchi is with the Japan Aerospace Exploration Agency, JAXA. The STS-114 crew is at KSC to take part in crew equipment and orbiter familiarization.

Accompanied by his wife, ISS Expedition 48-49 crewmember Anatoly Ivanishin of Roscosmos walks to a bus at the Gagarin Cosmonaut Training Center in Star City, Russia June 24 as he and his crewmates departed for their launch site at the Baikonur Cosmodrome in Kazakhstan. Kate Rubins of NASA, Ivanishin and Takuya Onishi of the Japan Aerospace Exploration Agency will launch July 7 from the Baikonur Cosmodrome in Kazakhstan on the Soyuz MS-01 spacecraft for a planned four-month mission on the International Space Station. NASA/Stephanie Stoll

KENNEDY SPACE CENTER, FLA. - KSC External Relations and Business Development Director JoAnn Morgan speaks to attendees of The Florida Commission on the Status of Women held June 7 at the Debus Conference Facility. Morgan is a member of the group’s Hall of Fame. The commission, through coordinating, researching, communicating, and encouraging legislation, is dedicated to empowering women from all walks of life in achieving their fullest potential, to eliminating barriers to that achievement, and to recognizing women’s accomplishments.

KENNEDY SPACE CENTER, FLA. - KSC External Relations and Business Development Director JoAnn Morgan (sixth from right) joins other attendees of The Florida Commission on the Status of Women held June 7 at the Debus Conference Facility. Morgan is a member of the group’s Hall of Fame. The commission, through coordinating, researching, communicating, and encouraging legislation, is dedicated to empowering women from all walks of life in achieving their fullest potential, to eliminating barriers to that achievement, and to recognizing women’s accomplishments.

KENNEDY SPACE CENTER, FLA. - KSC External Relations and Business Development Director JoAnn Morgan speaks to attendees of The Florida Commission on the Status of Women held June 7 at the Debus Conference Facility. Morgan is a member of the group’s Hall of Fame. The commission, through coordinating, researching, communicating, and encouraging legislation, is dedicated to empowering women from all walks of life in achieving their fullest potential, to eliminating barriers to that achievement, and to recognizing women’s accomplishments.

STS104-E-5237 (20 July 2001) --- Astronaut James F. Reilly participates in a bit of space history as he joins astronaut Michael L. Gernhardt (out of frame) in utilizing the new Quest airlock for the first ever space walk to egress from the International Space Station (ISS). The two STS-104 mission specialists were scheduled to attach a fourth and final supply tank to the airlock’s exterior, and move on to some get-ahead tasks made possible when they were able to attach a bonus third tank during an earlier space walk. Tasks added to the final space walk include an inspection of one of the station’s solar array swivels and inspection of the Floating Potential Probe that measures plasma levels around the solar arrays. The image was recorded with a digital still camera.