S73-33208 (August 1973) --- These three men are the prime crewmen for the Skylab 4 mission. Pictured in their flight suits with a globe and a model of the Skylab space station are, left to right, astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. Photo credit: NASA

This image of Skylab in orbit was taken as the third crew (Skylab-4) departed the space station after 84 days in the orbiting laboratory. A smiling Skylab seemed to wink good-bye for the job well done.

This photograph was taken as the third crew (Skylab-4) departed the space station. The solar observatory was designed for full exposure to the Sun throughout most of the Skylab mission. Solar energy was transformed into electrical power for operation of all spacecraft systems. The proper operation of these solar arrays was vital to the mission. This Skylab in orbit view was taken by the Skylab-4 crew.

In this photograph, a skylab-4 astronaut performs Extra Vehicular Activities (EVA) outside of the lab. The third crew (Skylab-4) spent 84 days in the orbiting laboratory. The solar observatory was designed for full exposure to the Sun throughout most of the Skylab mission. Solar energy was transformed into electrical power for operation of all spacecraft systems. The proper operation of these solar arrays was vital to the mission.

This Skylab-4 mission onboard photograph shows Astronaut Ed Gibson getting ready to prepare his meal in the crew wardroom. The tray contained heating elements for preparing the individual food packets. The food on Skylab was a great improvement over that on earlier spaceflights. It was no longer necessary to squeeze liquified food from plastic tubes. Skylab's kitchen was so equipped that each crewman could select his own menu and prepare it to his own taste.

S73-37248 (8 Nov. 1973) --- The three members of the Skylab 4 crew are photographed standing near Pad B, Launch Complex 39, Kennedy Space Center, Florida, during preflight activity. They are, left to right, scientist-astronaut Edward G. Gibson, science pilot; astronaut Gerald P. Carr, commander; and astronaut William R. Pogue, pilot. The Skylab 4/Saturn 1B space vehicle is on the pad in the background. Skylab 4, the third and last manned visit to the Skylab space station in Earth orbit, will return additional information on the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. Photo credit: NASA

SL4-149-5036 (February 1974) --- View of triangle-shaped cleat taped on the bottom of a shoe of a Skylab 4 crew member. Photo credit: NASA

S73-37929 (16 Nov. 1973) --- A sunrise view at the Kennedy Space Center showing in the near distance the Skylab 4/Saturn 1B space vehicle on Pad B, Launch Complex 39, on the morning of the launch. The liftoff was at 9:01:23 a.m. (EST), Friday, Nov. 16, 1973. Skylab 4 is the third and last of three scheduled manned Skylab missions. Aboard the Skylab 4 Command/Service Module were astronauts Gerald P. Carr, Edward G. Gibson and William R. Pogue. This picture was photographed by astronaut Bruce McCandless II. Photo credit: NASA

SL3-113-1586 (July-September 1973) --- This photograph is an illustration of the humorous side of the Skylab 3 crew. This dummy was left behind in the Skylab space station by the Skylab 3 crew to be found by the Skylab 4 crew. The dummy is dressed in a flight suit and placed in the Lower Body Negative Pressure Device. The name tag indicates that it represents Gerald P. Carr, Skylab 4 commander, in the background is a partial view of the dummy for William R. Pogue, Skylab 4 pilot, propped upon the bicycle ergometer. The dummy representing Edward G. Gibson, Skylab science pilot, was left in the waste compartment. Astronauts Alan L. Bean, Owen K. Garriott and Jack R. Lousma were the Skylab 3 crewmen. Photo credit: NASA

SL3-113-1587 (July-September 1973) --- This photograph is an illustration of the humorous side of the Skylab 3 crew. This dummy was left behind in the Skylab space station by the Skylab 3 crew to be found by the Skylab 4 crew. The dummy is dressed in a flight suit and propped upon the bicycle ergometer. The name tag indicated that it represents William R. Pogue, Skylab pilot. The dummy for Gerald P. Carr, Skylab 4 commander, was placed in the Lower Body Negative Pressure Device. The dummy representing Edward G. Gibson was left in the waste compartment. Astronauts Alan L. Bean, Owen K. Garriott and Jack R. Lousma were the Skylab 3 crewmen. Gibson is the Skylab 4 science pilot. Photo credit: NASA

S73-37030 (November 1973) --- The procedures for repairing the coolant system aboard the Airlock Module of the Skylab space station in Earth orbit are discussed by flight controllers in the Mission Operations Control Room in the Mission Control Center at Johnson Space Center. Skylab 4 flight director Neil Hutchinson is on the right. Astronaut Russell L. Schweickart is wearing the sports shirt. Astronaut Bruce McCandless II, a Skylab 4 CAPCOM, is seated next to Schweickart. Items of equipment in the foreground are similar to components of a special coolant re-servicing kit which was taken to Earth orbit by the Skylab 4 crewmen. The kit consists of a tank containing 42 pounds of COOLANOL, a series of saddle valves, bolts and spacers, and leak-check hoses. The re-supply tank is a modified command module reaction control subsystem (RCS) fuel tank. Photo credit: NASA

Astronaut Gerald P. Carr, commander for the Skylab 4 mission, demonstrates the effects of zero-gravity as he floats in the forward dome area of the Orbital Workshop of the Skylab space station while in Earth orbit.

SL4-150-5062 (January 1974) --- A 35mm camera, operated by astronaut William R. Pogue, Skylab 4 pilot, recorded this wide scene of his Skylab 4 crewmates on the other end of the orbital workshop. Astronauts Jerry P. Carr (right), commander, and Edward G. Gibson, science pilot, pose for the snapshot. Also in the frame are parts of three Extravehicular Mobility Unit (EMU) spacesuits, used on several EVA sessions during the third manning of the Skylab space station. Photo credit: NASA

S73-37650 (28 Nov. 1973) --- Astronaut Gerald P. Carr, right, Skylab 4 commander, enjoys a meal aboard the orbiting Skylab space station in this photographic reproduction from a television of Nov. 28, 1973. Scientist-astronaut Edward G. Gibson, science pilot for the third manned Skylab flight, demonstrates the zero-gravity environment by turning upside. The two crewmen were joined by astronaut William R. Pogue, pilot, for the evening meal. The food station is in the wardroom of the Crew Quarters in the Orbital Workshop (OWS). Photo credit: NASA

S73-38962 (28 Dec. 1973) --- The three members of the Skylab 4 crew confer via television communication with Dr. Lubos Kohoutek, discoverer of the Comet Kohoutek. This picture of the three astronauts was reproduced from a TV transmission made by a TV camera aboard the space station in Earth orbit. They are, left to right, Gerald P. Carr, commander; Edward G. Gibson, science pilot; and William R. Pogue, pilot. They are seated in the crew quarters wardroom of the Orbital Workshop. Professor Kohoutek, who is employed at the Hamburg Observatory in West Germany, was visiting the Johnson Space Center in Houston when he conferred with the Skylab 4 crewmen. Photo credit: NASA

S72-46702 (December 1972) --- The three members of the prime crew of the third of three scheduled manned Skylab missions (Skylab 4) appear before a gathering of news media representatives at a press conference held at the Manned Spacecraft Center. They are, left to right, astronaut William R. Pogue, pilot; scientist-astronaut Edward G. Gibson, science pilot; and astronaut Gerald P. Carr, commander. Photo credit: NASA

S73-33207 (August 1973) --- These three men are the prime crew for the Skylab 4 mission. Pictured in their Skylab spacesuits with a globe and a model of the Skylab space station are, left to right, astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. Photo credit: NASA

This spectacular view is a color-enhanced ultraviolet exposure of a colossal eruption, photographed during the Skylab-4 mission by the Apollo Telescope Mount facility on December 19, 1973. This giant prominence, one of the mightiest in 25 years, sparned a third of a million miles into space, roughly the distance between Earth and the Moon.

This pencil sketch of the Comet Kohoutek made by Skylab-4 astronaut Edward Gibson illustrates the crew's collective impressions of the comet's appearance on December 29, 1973. An early discovery of a large comet in an orbit that would reach close to the Sun at the end of 1973 prompted NASA to initiate Operation Kohoutek, a program to coordinate widespread observations of the comet from ground observatories, aircraft, balloons, rockets, unmarned satellites, and Skylab.

S74-17306 (5 Dec. 1973) --- Scientist-astronaut Edward G. Gibson, Skylab 4 science pilot, stands at the Apollo Telescope Mount (ATM) console in the Multiple Docking Adapter (MDA) of the Skylab space station cluster in Earth orbit. This picture was taken with a hand-held 35mm Nikon camera. The ATM console was one of the busiest areas of the space station during the 84-day third manned Skylab mission, as Comet Kohoutek and solar activity were closely followed by the ATM and monitored by the crewmen from the ATM console. As Gibson demonstrated during a television transmission on Dec. 5, 1973, the ATM console controls several instruments on the solar telescope. Joining Gibson for the record-setting Skylab 4 mission were astronauts Gerald P. Carr, commander, and William R. Pogue, pilot. Photo credit: NASA

S72-53094 (For release February 1973) --- This is the emblem for the third manned Skylab mission. It will be a mission of up to 56 days. Skylab is an experimental space station consisting of a 100-ton laboratory complex in which medical, scientific and technological experiments will be performed in Earth orbit. The members of the crew will be astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. The symbols in the patch refer to the three major areas of investigation proposed in the mission. The tree represents man's natural environment and relates directly to the Skylab mission objectives of advancing the study of Earth resources. The hydrogen atom, as the basic building block of the universe, represents man's exploration of the physical world, his application of knowledge, and his development of technology. Since the sun is composed primarily of hydrogen, it is appropriate that the symbol refers to the solar physics mission objectives. The human silhouette represents mankind and the human capacity to direct technology with a wisdom tempered by regard for his natural environment. It also directly relates to the Skylab medical studies of man himself. The rainbow, adopted from the Biblical story of the flood, symbolizes the promise that is offered man. It embraces man and extends to the tree and the hydrogen atom emphasizing man's pivotal role in the conciliation of technology with nature. Photo credit: NASA

S73-36900 (8 Nov. 1973) --- The three members of the Skylab 4 crew undergo spacesuit fit and pressure checks in the suiting building during preflight activity at the Kennedy Space Center, Florida. They are astronaut Gerald P. Carr (foreground), commander; scientist-astronaut Edward G. Gibson (center), science pilot; and astronaut William R. Pogue (background), pilot. Skylab 4, the third and last visit to the Skylab space station in Earth orbit, will return additional information on the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. Photo credit: NASA

SL4-140-4110 (January 1974) --- View of the USSR, Siberia area from Skylab 4. Other areas seen are Ozero, Kanka, Ussiriysk, the Sea of Japan and Kavalerovo (45.5N, 135.5E). Photo credit: NASA

SL4-150-5074 (February 1974) --- Scientist-astronaut Edward G. Gibson, science pilot for the Skylab 4 mission, demonstrates the effects of zero-gravity as he sails through airlock module hatch. Photo credit: NASA

S73-33858 (November 1973) --- A close-up view of the feet of scientist-astronaut William E. Thornton as he demonstrates the use of a treadmill-like exercise device which was developed for maintaining the leg and back muscles of the Skylab 4 crewman. Thornton is in the Skylab Orbital Workshop simulator in Building 5 at the Johnson Space Center. The Skylab 2 and Skylab 3 astronauts had no exercise device onboard capable of adequately maintaining their leg and back muscles. The treadmill device consists of a Teflon-coated aluminum plate or sheet bolted to the floor of the Skylab Orbital Workshop. The crewmen will wear the bicycle ergometer harness while exercising. Bungee cords attached to the floor and to the harness will supply the downward pressure or force for the back and leg muscles. The astronaut's feet will slide over the Teflon-coated plate as he "marches in place." Photo credit: NASA

S73-36766 (November 1973) --- The prime crewmen of the third manned Skylab mission (Skylab 4) pause at a USAF T-38A jet at Ellington Air Force Base, Texas before flying to Kennedy Space Center (KSC) at Cape Canaveral, Florida. Skylab 4 crewmen are astronaut Gerald P. Carr, center, commander; scientist-astronaut Edward G. Gibson, science pilot, left; and astronaut William R. Pogue, pilot. Photo credit: NASA

This Skylab-4 mission onboard photograph shows Astronaut Ed Gibson at the complex control and display console for the Apollo Telescope Mount solar telescopes located in the Skylab Multiple Docking Adapter. Astronauts watched the Sun, and photographed and recorded the solar activities, such as the birth of a solar flare.

SL4-142-4542 (November 1973-February 1974) --- An oblique view of the Pacific Coast of Southern California, including the Los Angeles and San Diego areas, as seen from the Skylab space station in Earth orbit. This picture was taken by one of the Skylab 4 crewmen using a hand-held 70mm Hasselblad camera with a 100mm lens and SO-368 medium-speed Ektachrome film. The visible coastline extends from San Diego northwesterly to Santa Barbara. The Mojave Desert occupies much of the photograph. This view also includes the Channel Islands off the coast. Note that the higher elevations of the mountains are covered with snow. Photo credit: NASA

SL4-150-5080 (16 Nov. 1973-8 Feb. 1974) --- Two of the three Skylab 4 (third manning) astronauts exhibit the "magic" that can be accomplished in the weightlessness of space. Astronaut Gerald D. Carr, mission commander, uses his index finger to suspend astronaut William R. Pogue, pilot, in the Orbital Workshop (OWS). The two "wizards" completed almost three months aboard the Earth-orbiting Skylab space station, plenty of time to grow these full beards. The photograph was taken with a 35mm camera by astronaut Edward G. Gibson, science pilot. Photo credit: NASA

SL4-143-4707 (8 Feb. 1974) --- An overhead view of the Skylab space station cluster in Earth orbit as photographed from the Skylab 4 Command and Service Modules (CSM) during the final fly-around by the CSM before returning home. The space station is contrasted against a cloud-covered Earth. Note the solar shield which was deployed by the second crew of Skylab and from which a micrometeoroid shield has been missing since the cluster was launched on May 14, 1973. The OWS solar panel on the left side was also lost on workshop launch day. Photo credit: NASA

S73-32839 (10 Sept. 1973) --- Scientist-astronaut Edward G. Gibson, science pilot for the third manned Skylab mission (Skylab 4), enters a notation in a manual while seated at the control and display panel for the Apollo Telescope Mount (ATM) during simulations inside the one-G trainer for the Multiple Docking Adapter (MDA) at the Johnson Space Center (JSC). Dr. Gibson will be joined by astronauts Gerald P. Carr, commander, and William R. Pogue, pilot, when the Skylab 4 mission begins in November 1973. Photo credit: NASA

SL4-142-4548 (27 Jan. 1974) --- An oblique view of northwestern Mexico, as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crewmen. The camera used was a hand-held 70mm Hasselblad, with SO-368 medium-speed Ektachrome film. This photograph was taken on a sweep down the coast to document the fault patterns of southern California and northwest Mexico. SL4-142-4532 gives an excellent overview of the entire region. The specific reason for this picture was an attempt to see if the Agua Blanca Fault in Baja California extends to the east toward the Gulf of California. Several attempts were made by the Skylab 4 crew to visually detect such an extension, but none was found. The report was that the fault disappeared into an area of sand and heavily eroded material that obscured any feature that might be present deeper. This area of sand and loose material is the light-colored area in the center of Baja at the extreme north part of the photograph. In addition to this geology the Pinacate volcanic field in Sonora, the sand dunes in Sonora, and the sediment flow patterns of the Colorado River entering the Gulf are additional areas of study utilizing this photograph. Photo credit: NASA

S74-19160 (8 Feb. 1974) --- An overall view of activity in the Mission Operations Control Room in the Mission Control Counter following the successful splashdown of the Skylab 4 command module in the Pacific Ocean. The three flight controllers in the foreground, left to right, are flight director Neil B. Hutchinson; flight director Donald R. Puddy; and astronaut Robert L. Crippen, a spacecraft communicator (CAPCOM). Astronauts Gerald P. Carr, Edward G. Gibson and William R. Pogue had just completed an 84-day mission with the Skylab space station in Earth orbit. Photo credit: NASA

SL4-142-4577 (28 Jan. 1974) --- Two large ice islands in the vicinity of South Georgia Island in the South Atlantic Ocean, as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crewmen. The camera used was a hand-held 70mm Hasselblad, with SO-368 medium-speed Ektachrome. One of the ice islands is partially obscured by clouds. Ice islands were observed as large as 45 by 60 kilometers (27 x 37 miles) and as far north as 45 degrees south latitude. The size and distribution of the "small" icebergs (to a ship they would look very large) can be used to study the local winds and currents. Recent research has suggested the possibility of towing such Antarctic icebergs to selected areas and using them as water supplies. One such iceberg would contain many times the water as in Lake Powell. Photo credit: NASA

SL4-141-4340 (20 Jan. 1974) --- An oblique view of the southern part of the Sea of Okhotsk, north of Japan, as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crewmen. The camera used was a hand-held 70mm Hasselblad, and SO-368 medium-speed Ektachrome. NORTH IS AT THE TOP WHEN THE PICTURE IS HELD WITH THE LARGEST LAND MASS AT THE BOTTOM. Most of the land area is Hokkaido Island, Japan. The southern tip of Sakhalin Island (Soviet Union) is in the northwest corner. This photograph was taken to aid in the study of the formation of sea ice. Comparison of these photographs will be made with observations made during a joint USSR-U.S. experiment in the Bering Sea a year earlier. Observations in the Sea of Okhotsk are of interest because the ice has a morphology similar to that of the Bering Sea. Photo credit: NASA

S74-17741 (8 Feb. 1974) --- The Skylab 4 Command Module splashes down in the Pacific Ocean southwest of San Diego, California at 10:17 a.m., Feb. 8, 1974. Photo credit: NASA

SL4-92-300 (February 1974) --- A near vertical view of the Mobile Bay, Alabama area is seen in this Skylab 4 Earth Resources Experiments Package S190-B (five-inch earth terrain camera) photograph taken from the Skylab space station in Earth orbit. North of Mobile the Tombigbee and Alabama Rivers join to form the Mobile River. Detailed configuration of the individual stream channels and boundaries can be defined as the Mobile River flows into Mobile Bay, and thence into the Gulf of Mexico. The Mobile River Valley with its numerous stream channels is a distinct light shade in contrast to the dark green shade of the adjacent areas. The red coloration of Mobile Bay reflects the sediment load carried into the Bay by the rivers. Variations in red color indicate sediment load and the current paths within Mobile Bay. The waterly movement of the along shore currents at the mouth of Mobile Bay is shown by the contrasting light blue of the sediment-laden current and the blue of the Gulf predominately. Agricultural areas east and west of Mobile Bay are characterized by a rectangular pattern in green to white shades. Color variations may reflect the type and growth cycle of crops. Agricultural areas (light gray-greens) are also clearly visible in other parts of the photograph. Interstate 10 extends from near Pascagoula, Mississippi eastward through Mobile to the outskirts of Pensacola, Florida. Analysis of the EREP photographic data will be undertaken by the U.S. Corps of Engineers to determine bay dynamic processes. Federal agencies participating with NASA on the EREP project are the Departments of Agriculture, Commerce, Interior, the Environmental Protection Agency and the Corps of Engineers. All EREP photography is available to the public through the Department of Interior's Earth Resources Observations Systems Data Center, Sioux Falls, South Dakota. 57198 Photo credit: NASA

This Skylab-4 onboard photograph depicts Astronaut Gerald Carr testing Astronaut Maneuvering Equipment (M509) by flying it around under weightless conditions in the Orbital Workshop. The M509 experiment was an operational study to evaluate and conduct an in-orbit verification of the utility of various maneuvering techniques to assist astronauts in performing tasks that were representative of future extravehicular activity requirements.

SL4-143-4706 (8 Feb. 1974) --- An overhead view of the Skylab space station cluster in Earth orbit as photographed from the Skylab 4 Command and Service Modules (CSM) during the final fly-around by the CSM before returning home. The space station is contrasted against a cloud-covered Earth. Note the solar shield which was deployed by the second crew of Skylab and from which a micro meteoroid shield has been missing since the cluster was launched on May 14, 1973. The Orbital Workshop (OWS) solar panel on the left side was also lost on workshop launch day. Inside the Command Module (CM) when this picture was made were astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. The crew used a 70mm hand-held Hasselblad camera to take this photograph. Photo credit: NASA

S74-15064 (28 Dec. 1973) --- Dr. Lubos Kohoutek, discoverer of the Comet Kohoutek, is seen in the Mission Operations Control Room in the Mission Control Center during a visit to the Johnson Space Center. He is talking over a radio-telephone with the Skylab 4 crewmen in the Skylab space station in Earth orbit. Professor Kohoutek, a well-known Czechoslovakian astronomer who works at the Hamburg Observatory in West Germany, discussed the comet with astronauts Gerald P. Carr, Edward G. Gibson and William R. Pogue. One of the major objectives of the Skylab 4 mission is to monitor the passing of the Comet Kohoutek. Dr. Zdenek Sekania, who accompanied Dr. Kohoutek on the visit to JSC, is on the telephone in the left background. Dr. Sekania is with the Smithsonian Observatory in Cambridge, Massachusetts. Photo credit: NASA

S73-36910 (November 1973) --- An engineer's drawing of the Skylab 4 Far Ultraviolet Electronographic camera (Experiment S201). Arrows point to various features and components of the camera. As the Comet Kohoutek streams through space at speeds of 100,000 miles per hour, the Skylab 4 crewmen will use the S201 UV camera to photograph features of the comet not visible from the Earth's surface. While the comet is some distance from the sun, the camera will be pointed through the scientific airlock in the wall of the Skylab space station Orbital Workshop (OWS). By using a movable mirror system built for the Ultraviolet Stellar Astronomy (S019) Experiment and rotating the space station, the S201 camera will be able to photograph the comet around the side of the space station. Photo credit: NASA

SL4-137-3566 (12 Dec. 1973) --- A group of clouds near New Zealand, as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crew members. The camera used was a hand-held 70mm Hasselblad with SO-368 medium speed Ektachrome. This picture shows vividly how low sun angles enhance relief, giving these clouds a three-dimensional appearance. In addition to being "pretty," this photograph can be used to study the line of storms seen here at sunset. Relative heights of individuals cells can be measured, as well as their relation to the surrounding clouds. Photo credit: NASA

SL4-138-3756 (28 Dec. 1973) --- The northern half of Mauritania's Atlantic Coast, as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crewmen. The camera used was a hand-held 70mm Hasselblad, with SO-368 medium-speed Ektachrome. Spanish Sahara is just out of the picture to the north. The linear chains of sand dunes leading to the sea were the objects of study in an effort to better understand deserts and their formations. Photographs such as this were compared with similar ones taken over the drought-stricken areas including Mali and Niger in an attempt to understand the desertification processes which may be occurring there. Photo credit: NASA

S73-37274 (1973) --- An artist's concept illustrating how the Skylab 4 astronauts will observe, through the scientific airlock of the Orbital Workshop, the passing of the newly-discovered Comet Kohoutek. The favorable location of the Skylab space station in Earth orbit will help provide a comprehensive investigation of the nature and evolution of the coma and tails as the comet approaches, passes, and recedes from the sun. Photo credit: NASA

S73-32848 (10 Sept. 1973) --- Scientist-astronaut Edward G. Gibson, science pilot for the third manned Skylab mission (Skylab 4), reads the markings on a magazine of 400 feet of film for the 16mm Data Acquisition Camera (DAC), during a training exercise in the Orbital Workshop (OWS) trainer at Johnson Space Center. Photo credit: NASA

S73-32847 (10 Sept. 1973) --- Astronaut Gerald P. Carr, Skylab 4 commander, changes a dial on the control and display panel for the Earth Resources Experiments package (EREP) during a training exercise in the Multiple Docking Adapter (MDA) one-G trainer at Johnson Space Center. Photo credit: NASA

SL4-138-3843 (1 Jan. 1974) --- A part of northern California centered near San Francisco Bay photographed at 3 p.m. Jan. 2, 1974, from the Skylab space station in Earth orbit. This near vertical view encompasses the coastline from Monterey Bay (right) to about 50 miles north of Point Reyes (left) and includes, from bottom to top, San Francisco Bay (center), Sacramento Valley (left center), San Joaquin Valley (right center), and the snow-covered Sierra Nevada. Afternoon shadows sharply delineate a valley which parallels San Francisco Bay, crosses Point Reyes, and lies between the Bay and the Pacific coastline. This valley marks the location of the San Andreas Fault, a major break in the Earth's crust. Forces acting on the crust are causing the land west (bottom) of the fault line to move north relative to land on the east side. The Skylab 4 astronauts photographed major fault zones in South America, New Zealand, Japan and Africa for use in the study of worldwide tectonic system. Agricultural areas in the Sacramento and San Joaquin Valleys are indicated by the tan areas which are easily discerned in contrast to the green-gray background. Photo credit: NASA

S73-36909 (16 Nov. 2013) --- An overall view of the Flight Operations Director's console in the Mission Operations Control Room in the Mission Control Center at Johnson Space Center during the launch of the Skylab 4 mission. The television monitor records the progress of the flight seconds after liftoff. Left to right, are Dr. Christopher C. Kraft Jr., JSC Director; Howard W. Tindall Jr., JSC Director of Flight Operations; and Flight Director M.P. Frank. Public Affairs commentator John E. McLeish can be seen at the PAO console in the background. Photo credit: NASA

SL4-137-3700 (22 Dec. 1973) --- A near vertical view of a portion of South Island, New Zealand, as see from the Skylab space station in Earth orbit. This picture was taken by one of the Skylab 4 crew members with a handheld 70mm Hasselblad camera using a 100mm lens. The picture should be held with the largest body of water (Tasman Sea) on the left. Cape Foulwind is at the upper left. The City of Christchurch is under clouds at the center right margin. Note the movement of sediment by alongshore currents, especially on the east (right) side of the island. The Alpine Fault, which is part of the circum-Pacific volcanic-tectonic belt, is clearly visible on the left (west) side of the island. The fault line is marked by a scarp, which appears very distinct from orbital altitude. Differences in topography and vegetation on either side of the fault are also sharp. Streams change direction at the fault line, and the change in slope at the fault line is evident in the widening of stream channels. The left side of the fault has moved northeast (upward) relative to the right side; some stream offsets indicate the direction of relative movement, but others are controlled by local topography. The Alpine Fault, which also transects New Zealand's North Island, was photographed and described more than a dozen times by the Skylab 4 crewmen. The circum-Pacific volcanic-tectonic belt is a feature of the Earth's crust which is related to sea floor spreading and continental drift. Though the Alpine Fault is sharply delineated in this photograph, other major crustal features are subtle that their existence was unknown before their observation from orbit. The distance from top to bottom is about 290 kilometers (175 miles). Photo credit: NASA

S72-17494 (19 Jan. 1972) --- These three men make up the crew of the Skylab 4 mission. They are, left to right, scientist-astronaut Edward G. Gibson, science pilot; astronaut Gerald P. Carr, commander; and astronaut William R. Pogue, pilot. They were photographed and interviewed during an "open house" press day in the realistic atmosphere of Skylab mock-up and trainers in the Mission Simulation and Training facility at the Manned Spacecraft Center. Photo credit: NASA

SL4-137-3655 (16 Dec. 1973) --- An island wake produced by the Antipodes Islands in the ocean current south of New Zealand is seen in this photograph taken from the Skylab space station in Earth orbit. A Skylab 4 crewmen took the picture with a hand-held 70mm Hasselblad camera. The bow wave pattern is quite evident and can be used to determine the current speed from the angle of the bow wave if the propagation speed of the surface wave is known. Also, evident is the darker band extending downstream from the island tens of miles. This is the actual wake of the island. The existence of water color differences from within to outside a turbulent island wake may indicate a temperature difference, with cooler water being stirred to the surface in the wake. This temperature difference could be used to drive a thermo-electric type generator to reduce small islands' dependence on imported oil for power generation. Photo credit: NASA

SL4-137-3632 (February 1974) --- A photograph taken from the Skylab space station in Earth orbit illustrating an atmospheric wave pattern by the affect of a small mountainous island on wind currents. Various patterns can be seen downwind of small islands. Often a Von Karmon vortex can be seen which appears as a spiral pattern. Multiple vortices have been photographed on previous missions. This photograph illustrates a "bow wave" pattern which extends for hundreds of miles downwind from the island. The island itself is often clear when a wave pattern is formed downstream. This particular pattern is very symmetrical. These wave patterns are most common in the South Pacific. This picture was taken by a Skylab 4 crewmen using a hand-held 70mm Hasselblad camera. Photo credit: NASA

S73-32840 (10 Sept. 1973) --- Scientist-astronaut Edward G. Gibson, Skylab 4 science pilot, turns on a switch on the control box of the S190B camera, one of the components of the Earth Resources Experiments Package (EREP). The single lens Earth Terrain Camera takes five-inch photographs. Behind Gibson is the stowed suit of astronaut Gerald P. Carr, commander for the third manned mission. The crew's other member is astronaut William R. Pogue, pilot. The training exercise took place in the Orbital Workshop one-G trainer at Johnson Space Center. Photo credit: NASA

DISCUSSING THEIR EXPERIENCES AND MEMORIES WITH THE MARSHALL TEAM AT THE 40TH ANNIVERSARY CELEBRATION OF SKYLAB JAN. 31 ARE, FROM LEFT, FORMER SKYLAB ASTRONAUTS ED GIBSON, SKYLAB 4 SCIENCE POLOT; PAUL WEITZ, SKYLAB 2 PILOT; WILLIAM POGUE, SKYLAB 4 PILOT; GERALD CARR, SKYLAB 4 COMMANDER; AND JOSEPH KERWIN, SKYLAB 2 SCIENCE PILOT

S73-28411 (February 1973) --- The three members of the prime crew of the third of three scheduled manned Skylab missions (Skylab 4) go through Skylab preflight training in the Mission Training and Simulation Facility at the Johnson Space Center. Astronaut Gerald P. Carr (on right), Skylab 4 commander, is seated at a simulator which represents the control and display console of the Apollo Telescope Mount which is located in the space station's Multiple Docking Adapter. Seated on the left is scientist-astronaut Edward G. Gibson, Skylab 4 science pilot. In the left background is astronaut William R. Pogue, Skylab 4 pilot. (Unmanned Skylab 1 will carry the Skylab space station payload into Earth orbit). Photo credit: NASA

S73-28412 (February 1973) --- The three members of the prime crew of the third of three scheduled manned Skylab missions (Skylab 4) go through Skylab preflight training in the Mission Training and Simulation Facility at the Johnson Space Center. Astronaut Gerald P. Carr (on right), Skylab 4 commander, is seated at a simulator which represents the control and display console of the Apollo Telescope Mount which is located in the space station's Multiple Docking Adapter. Seated on the left is scientist-astronaut Edward G. Gibson, Skylab 4 science pilot. In the left background is astronaut William R. Pogue, Skylab 4 pilot. (Unmanned Skylab 1 will carry the Skylab space station payload into Earth orbit). Photo credit: NASA

SL4-93-167 (February 1974) --- A vertical view of the Kennedy Space Center and the Florida Atlantic coast area is seen in this Skylab 4 Earth Resources Experiments Package S190-B (five-inch earth terrain camera) infrared photography taken from the Skylab space station in Earth orbit. This photograph shows the major land-ocean features of the Florida coast near Vero Beach northward to Cape Canaveral and the KSC complex. The launch pads for the Skylab missions are clearly visible. Identification of living vegetation is possible through the use of the color infrared film. Various shades of red portray differences in the vegetation such as shown in the patterns in the agricultural area near Vero Beach. In the Kennedy Space Center, the nearly continuous and uniform red color shows that most of the land areas are heavily vegetated. The white coastal beach areas are strongly contrasted to the red land and the blue Atlantic Ocean. Old dunal areas in KSC are visible on Merritt Island which is separated from the Launch areas by the Banana River and the mainland by the Indian River. Federal and state highways and numerous causeways over the rivers are easily identified. The Florida mainland is partly shadowed by small white clouds which cast a pronounced shadow to the east of each cloud indicated the Sun is west of solar noon. Federal agencies participating with NASA on the EREP project are the Departments of Agriculture, Commerce, Interior, the Environmental Protection Agency and the Core of Engineers. All EREP photography is available to the public through the Department of Interior's Earth Resources Observations Systems Data Center, Sioux Falls, South Dakota, 57198. Photo credit: NASA

S73-37285 (16 Nov. 1973) --- The Skylab 4/Saturn 1B space vehicle is launched from Pad B, Launch Complex 39, Kennedy Space Center, Florida, at 9:01:23 a.m. (EST), Friday, Nov. 16, 1973. Skylab 4 is the third and last of three scheduled manned Skylab missions. Aboard the Skylab 4 Command/Service Module were astronauts Gerald P. Carr, Edward G. Gibson and William R. Pogue. In addition to the CSM and its launch escape system, the Skylab 4 space vehicle consisted of the Saturn 1B first (S-1B) stage and the Saturn 1B second (S-IVB) stage. (The Skylab 1/Saturn V unmanned space vehicle with the space station payload was launched from Pad A on May 14, 1973). Photo credit: NASA

This photograph is a montage of astronaut crews for the three Skylab missions with simple biographical data of each astronaut. The 1st mission was designated as Skylab-2, 2nd mission as Skylab-3, and 3rd mission as Skylab-4. The Skylab-1 mission placed the Skylab Orbital Work Shop in orbit by a modified Saturn V launch vehicle. Skylab's 3 different 3-man crews spent up to 84 days in Earth orbit and performed a variety of more than 100 experiments.

S73-34093 (6 Aug. 1973) --- Astronaut Gerald P. Carr, fully suited, Skylab 4 commander, prepares to enter spacecraft 118 (the Skylab 4 vehicle) at the start of a high altitude chamber test at the Kennedy Space Center (KSC). Also participating in the test were scientist-astronaut Edward G. Gibson, science pilot, and astronaut William R. Pogue, pilot. The Skylab 4 spacecraft is to be moved to the Vehicle Assembly Building (VAB) on Aug. 12, where it will be mated with the launch vehicle as a possible rescue craft for the Skylab 3 crewmen if needed. Photo credit: NASA

S73-36905 (8 Nov. 1973) --- Astronaut William R. Pogue, pilot of the Skylab 4 mission, relaxes during spacesuit pressure and fit checks at the Kennedy Space Center, Florida. This shoulder and head shot of Pogue was taken a few days before the scheduled Skylab 4 launch. This third and last visit to the Skylab space station in Earth orbit will return additional information on the Earth and sun, as well as provide favorable location from which to observe the recently discovered Comet Kohoutek. The other two members of the Skylab 4 crew will be astronaut Gerald P. Carr, commander; and scientist-astronaut Edward G. Gibson, science pilot. Photo credit: NASA

S73-36908 (8 Nov. 1973) --- Astronaut Gerald P. Carr, commander of the Skylab 4 mission, undergoes spacesuit pressure and fit checks at the Kennedy Space Center, Florida. This shoulder and head shot of Carr was taken a few days before the scheduled Skylab 4 launch. This third and last visit to the Skylab space station in Earth orbit will return additional information on the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. The other two members of the Skylab 4 crew will be astronaut William R. Pogue, pilot; and scientist-astronaut Edward G. Gibson, science pilot. Photo credit: NASA

SL4-93-153 (February 1974) --- A vertical view of the Birmingham and central Alabama area is seen in this Skylab 4 Earth Resources Experiments Package S190-B (five-inch earth terrain camera) infrared photographed taken from the Skylab space station in Earth orbit. Illustrated here is the utility of color infrared film in depicting distribution of living vegetation in the 3,600 square mile Birmingham region. The Birmingham industrial complex, with a population of nearly 850,000, is the light gray area nestled in the valley between the northeast-trending ridges that are prominent topographic features in the southern Appalachian Mountains. The narrow ridges and adjacent valleys reflect folded and faulted sedimentary rocks, indicating the complex geological history of the region. Two major rivers and several reservoirs are easily distinguished in this photograph. Bankhand Lake, formed by a dam on the Black Warrior River, appears as bright blue west of Birmingham. Two lakes are formed by dams on the Goosa River east of Birmingham. Federal and state highways appear as thin white lines and are easily identified. Interstate 65 to Montgomery is the prominent white line extending southward from Birmingham. Power line clearings are visible in the center of the picture along the Goosa River, and can be traced northwestward to northern parts of Birmingham. The predominant deep red color of the picture is due to the reflections from living vegetation. In contrast are the light tan areas that commonly occur as rectangular patterns in the east part of the photograph and represent mature agricultural crops or grazing lands. Analysis of the photographic data from the earth terrain camera will be conducted by Dr. H. Jayroe of the Marshall Space Flight Center in developing analytical techniques. All EREP photography is available to the public through the Department of Interior's Earth Resources Observations Systems Data Center, Sioux Falls, South Dakota, 57198. Photo credit: NASA

S73-38731 (December 1973) --- Photograph taken of the Comet Kohoutek from the Skylab space station in Earth orbit by a Skylab 4 crew member. Photo credit: NASA

SL4-138-3875 (February 1974) --- A color oblique photograph looking east over the Rocky Mountains and Great Plains. This view covers a portion of the States of Colorado, Wyoming, and Nebraska. A Skylab 4 crewmen took this picture with a hand-held 70mm Hasselblad camera. This entire region, covered with a blanket of snow, depicts much of the structural and topographic features of the Rocky Mountain chain. Man's only apparent change to the snow pattern seen here is the (right center) metropolitan areas of Denver and Colorado Springs, Colorado, which can be observed along the eastern edge of the mountain front. Grand Junction, Colorado on the western slope of the Rocky Mountains is just off the photograph at left center bottom. The major inter-montane valleys of South Park (right center), Middle Park (center), and North Park (left center) are clearly visible and separate the Colorado Rockies Front Range from the high rugged mountains can be discovered such as Pikes Peak near right border (center), Mt. Cunnison region, circular feature accentuated by the Cunnison River (dark) in the right center (bottom) of the photograph. The snow covered peaks of Mts. Harvard, Princeton and Yale form the high region of the Collegiate Range which is the pronounced mountain area in the right center. Snow cover not only enhances mountain features but also the drainage patterns. East of Denver (right corner) the sinuous trace of the South Platte River (center) and its junction with the North Platte River near North Platte, Nebraska. Lake McConaughy in Nebraska is the body of water (black) near the river intersection. The trace of the Republic River in southern Nebraska is visible near the right corner of the photography. Geologic and hydro logic studies using this photograph will be conducted by Dr. Roger Morrison, U.S. Geological Survey. Photo credit: NASA

S73-37287 (16 Nov. 1973) --- The Skylab 4/Saturn 1B space vehicle is launched from Pad B, Launch Complex 39, Kennedy Space Center, Florida, at 9:01:23 a.m., Friday, Nov. 16, 1973. Skylab 4 is the third and last of three scheduled manned Skylab missions. Photo credit: NASA

S73-32854 (10 Sept. 1973) --- Astronaut William R. Pogue, Skylab 4 pilot, uses the Skylab Viewfinder Tracking System (S191 experiment) during a training exercise in the Multiple Docking Adapter (MDA) one-G trainer at Johnson Space Center. In the background is astronaut Gerald P. Carr, seated at the control panel for the Earth Resources Experiments Package (EREP). Carr is Skylab 4 crew commander, and Gibson is science pilot. Photo credit: NASA

S74-17457 (3 Feb. 1974) --- This view of the Skylab 4 Command/Service Module in a docked configuration is a frame from a roll of movie film exposed by a 16mm Maurer camera. The other four components of the Skylab space station in Earth orbit are out of view to the right. This picture was taken by astronaut Gerald P. Carr, Skylab 4 commander, during the final Skylab extravehicular activity (EVA) which took place on Feb. 3, 1974. The crew members -- Gerald Carr, Edward Gibson and William Pogue -- were the first NASA astronauts to spend New Year's in space. A week earlier, they became the first crew to perform an EVA on Christmas day. Photo credit: NASA

SA-206 lifts off from Kennedy Space Center's launch complex 39B, in Florida, on May 25, 1973, for the first manned Skylab mission (SL-2) with astronauts Pete Conrad, Joseph Kerwin, and Paul Weitz. The Saturn IB, developed under the direction of the Marshall Space Flight Center (MSFC), launched five manned Earth-orbital missions between 1968 and 1975: Apollo 7, Skylab 2, Skylab 3, Skylab 4, and the Apollo-Soyuz Test Project (ASTP).

S73-25902 (4 May 1973) --- The three prime crew members of the first manned Skylab mission (Skylab 2) are photographed at Launch Complex 39, Kennedy Space Center, during preflight activity. They are, left to right, astronaut Paul J. Weitz, pilot; astronaut Charles Conrad Jr., commander; and scientist-astronaut Joseph P. Kerwin, science pilot. In the background is the Skylab 1/Saturn V space vehicle with its Skylab space station payload on Pad A. Photo credit: NASA

S75-31305 (March 1975) --- Astronaut William R. Pogue, Skylab 4 pilot. Photo credit: NASA

S73-36901 (8 Nov. 1973) --- Astronaut William R. Pogue, pilot of the Skylab 4 mission, relaxes on the running board of the transfer van during a visit to the Skylab 4/Saturn 1B space vehicle at Pad B, Launch Complex 39, Kennedy Space Center, Florida. On the morning of the launch the transfer van will transport astronauts Pogue, Gerald P. Carr, commander; and Edward G. Gibson, science pilot, from the suiting building to Pad B. Skylab 4, the third and last visit to the Skylab space station in Earth orbit, will return additional information on the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. Photo credit: NASA

S73-36902 (8 Nov. 1973) --- Astronaut Gerald P. Carr, commander of the Skylab 4 mission, relaxes on the running board of the transfer van during a visit to the Skylab 4/Saturn 1B space vehicle at Pad B, Launch Complex 39, at the Kennedy Space Center, Florida. On the morning of the launch the transfer van will transport astronauts Carr; William R. Pogue, pilot; and Edward G. Gibson, science pilot, from the suiting building to Pad B. Skylab 4, the third and last visit to the Skylab space station in Earth orbit, will return additional information the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. Photo credit: NASA

S73-36903 (8 Nov. 1973) --- Scientist-astronaut Edward G. Gibson, Skylab 4 science pilot, relaxes on the running board of the transfer van during a visit to the Skylab 4/Saturn 1B space vehicle at Pad B, Launch Complex 39, Kennedy Space Center, Florida. On the morning of the launch the transfer van will transport astronauts Gibson; Gerald P. Carr, commander; and William R. Pogue, pilot, from the suiting building to Pad B. Skylab 4, the third and last visit to the Skylab space station in Earth orbit, will return additional information on the Earth and sun, as well as provide a favorable location from which to observe the recently discovered Comet Kohoutek. Photo credit: NASA

CAPE CANAVERAL, Fla. – Former NASA astronauts Gerald P. Carr, left, and Edward G. Gibson place a wreath on an easel during a ceremony to honor former NASA astronaut William R. Pogue at the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex. In the background is a painting by former NASA astronaut Alan Bean. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Carr and science-pilot Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – NASA Kennedy Space Center Director Robert Cabana welcomes guests to the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex for a wreath laying ceremony to honor former NASA astronaut William R. Pogue. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Gerald P. Carr and science-pilot Dr. Edward G. Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – From left, former NASA astronauts Robert Cabana, Gerald P. Carr and Edward G. Gibson pay their respects to former NASA astronaut William R. Pogue during a wreath laying ceremony at the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex. Cabana now is the director of Kennedy Space Center. In the background is a painting by former NASA astronaut Alan Bean. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Carr and science-pilot Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – A wreath is placed next to a photo of former NASA astronaut William R. Pogue during a ceremony to honor Pogue held at the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Gerald P. Carr and science-pilot Dr. Edward G. Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Former NASA astronaut Gerald P. Carr remarks on his friendship with former NASA astronaut William R. Pogue during a wreath laying ceremony at the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Carr and science-pilot Dr. Edward G. Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Former NASA astronaut Edward G. Gibson, Ph.D., remarks on his friendship with former NASA astronaut William R. Pogue during a wreath laying ceremony at the United States Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex. Col. Pogue, pilot on NASA's Skylab 4 mission in 1973-74, died March 3. He was 84 years old. Skylab 4 was the third and final manned visit to the Skylab orbital workshop, launched Nov. 16, 1973, and concluded Feb. 8, 1974. At 84 days, 1 hour and 15 minutes, Skylab 4 was the longest manned space flight to that date. Pogue was accompanied on the record-setting 34.5-million-mile flight by Commander Gerald P. Carr and science-pilot Gibson. They conducted dozens of experiments and science demonstrations during their 1,214 orbits of Earth. Pogue logged 13 hours and 31 minutes in two spacewalks outside the orbital workshop. For more information, visit http://www.nasa.gov/content/skylab-4-pilot-william-pogue-dies. Photo credit: NASA/Kim Shiflett

The Astronaut Hall of Fame display for former NASA astronaut Gerald “Jerry” Carr is shown following a remembrance ceremony on Aug. 31, 2020, at the Kennedy Space Center Visitor Complex in Florida. Carr was commander of the Skylab 4 mission – the final, crewed mission of the Skylab program. He passed away Aug. 26 at the age of 88.

S72-31432 (November 1972) --- Astronaut Jack R. Lousma poses for a family portrait with his wife, Gratia Kay, and their three children, left to right, Mary 4; Timothy, 9; and Matthew, 7. Lousma is the pilot for the Skylab 3 or second manned Skylab mission. Photo credit: NASA

SL2-4-265 (25 May 1973) --- Skylab 2, approach to Skylab at long range, fly-around inspection. Orbital Workshop with area of missing micrometeoroid shield visible and partially deployed solar array visible. Photo credit: NASA

SL4-137-3721 (February 1974) --- Plankton blooms and color variations in the Falkland Current east of the Argentina coast in the South Atlantic Ocean as seen from the Skylab space station in Earth orbit. This picture was taken by one of the Skylab 4 crewmen using a hand-held 70mm Hasselblad camera. The Skylab 4 crew made many observations of the Falkland Current and related phenomena. This current flows north and northeastward along the Argentine coast near 40 degree south latitude where it meets the Brazil Current and the two swing eastward. The study of such photographs as this one can add significantly to our knowledge and understanding of the oceans. Photo credit: NASA

S74-18098 (1974) --- Graphical representation of an ultraviolet photograph depicting a solar flare, using the Skylab 4 Earth Observation Experiment equipment. Photo credit: NASA

SA-210 Apollo-Soyuz Test Project (ASTP) awaits the launch scheduled on July 15, 1975 on the launch pad at the Kennedy Space Center, the ASTP mission with astronauts Thomas Stafford, Vance Brand, and Donald "Deke" Slayton. The Saturn IB, developed under the direction of the Marshall Space Flight Center (MSFC), launched five manned Earth-orbital missions between 1968 and 1975: Apollo 7, Skylab 2, Skylab 3, Skylab 4, and the Apollo-Soyuz Test Project .

S73-33206 (August 1973) --- These three men are the prime crew for the Skylab 4 mission. Pictured in their Skylab spacesuits with a globe and a model of the Skylab space station are, left to right, astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. Photo credit: NASA

S74-17735 (February 1974) --- The three crewmen of the third manned Skylab mission (Skylab 4) look over their notes for their upcoming post-mission press conference at Johnson Space Center. They are, from left to right, astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot. The three astronauts spent 84 days aboard the Skylab space station cluster in Earth orbit. Photo credit: NASA

S74-17456 (3 Feb. 1974) --- Scientist-astronaut Edward G. Gibson has just egressed the Skylab EVA hatchway in this frame taken from a roll of movie film exposed by a 16mm Maurer camera. Astronaut Gerald P. Carr, Skylab 4 commander, took this picture during the final Skylab extravehicular activity (EVA) which took place on Feb. 3, 1974. Carr was above on the Apollo Telescope Mount (ATM) when he shot this frame of Gibson. Note Carr's umbilical/tether line extending from inside the space station up toward the camera. Astronaut William R. Pogue, Skylab 4 pilot, remained inside the space station during the EVA by Carr and Gibson. Photo credit: NASA

Shortly after liftoff on May 14, 1973, atmospheric drag tore off the thin metallic shield of Skylab that was designed to protect her from micro-meteorites and the Sun's intense heat. The Skylab-2 crew deployed a parasol sunshield to protect the orbiting laboratory. Concern over the possibility that materials used for the parasol would deteriorate with prolonged exposure to the Sun's rays prompted the installation of a second sunshield during the Skylab-3 mission. This time, the crew exited the space station and installed a twin-pole device to position the shield over the parasol. This photograph was taken by the Skylab-4 mission.

The idea that ultimately became Skylab first surfaced in 1962 as a proposal to convert a spent Saturn upper stage (Saturn V S-II stage) into an orbital workshop. In 1968, the Marshall Space Flight Center proposed an alternative to the wet workshop concept of refurbishing a space station in orbit. Instead, a fully equipped dry workshop could be launched as a complete unit ready for occupancy. Skylab became the free world's first space station. Launched in May 1973, the Skylab space station was occupied in succession by three teams of three crewmembers. These crews spent 28, 59, and 84 days respectively, orbiting the Earth and performing nearly 300 experiments. This view of Skylab in orbit was taken by the Skylab 4 (the last Skylab mission) crew.

JSC2011-E-075769 (4 June 1974) --- Vice President Gerald R. Ford presented the Collier Trophy Award for 1973 to Skylab Program Director William C. Schneider on June 4, 1974 in Washington. (original HQ number is 74H423) Photo credit: NASA

S73-34367 (16 Nov. 1973) --- A view at the Kennedy Space Center showing in the near distance the Skylab 4/Saturn 1B space vehicle on Pad B, Launch Complex 39, on the morning of the launch. Photo credit: NASA

S74-20010 (November-December 1973) --- Six frames of Skylab 4 Far Ultraviolet Electronographic (S201 experiment) photograph showing halo of Comet Kohoutek. Photo credit: NASA

SL4-138-3820 (31 Dec. 1973) --- An north-looking oblique view of chains of star sand dunes in eastern Algeria as seen from the Skylab space station in Earth orbit. This picture was taken by one of the Skylab 4 crewmen with a hand-held 70mm Hasselblad camera. The low sun angle of about 25 degrees above horizontal enhances the detail in this picture. The coordinates of the center of the photograph are approximately 29.5 degrees north latitude and 5.0 degrees east longitude in the Grand Erg Oriental. The field of view at the base of the photograph is approximately 200 kilometers (125 miles). The individual dunes are roughly star-shaped rather than simple crescents which are common in dune fields. In this region the stars are aligned along ridges. The causes of these and a wide variety of other dune forms are little understood. Descriptions and photographs from Skylab 4 will be used by the U.S. Geological Survey in their world-wide study of dunes. Photo credit: NASA

KENNEDY SPACE CENTER, FLA. -- The command_service module for the Skylab Rescue Vehicle was removed from its Saturn IB rocket in the Vehicle Assembly Building here today. The Skylab Program ended with splashdown of the Skylab 4 crew in the Pacific Ocean Feb. 8, ending the need for the rescue vehicle on Complex 39's Pad B since early December. The SaturnIB_Apollo was returned to the VAB last week and is now being dismantled. The spacecraft is to be taken to the Manned Spacecraft Operations Building in the KSC Industrial Area Feb. 20. Both the spacecraft and rocket will be stored at KSC as backup flight hardware for the Apollo-Soyuz Test Project in 1975.

S73-34369 (14 Aug. 1973) --- A Saturn 1B launch vehicle is rolled to Launch Complex 39, Pad B. The space vehicle, to be launched by the Saturn 1B, will carry the third Skylab crew (Skylab 4) to the now-orbiting Orbital Workshop (OWS) and the other four components making up the cluster. The Skylab crewmen, astronaut Gerald P. Carr, commander; scientist-astronaut Edward G. Gibson, science pilot; and astronaut William R. Pogue, pilot, are scheduled to be launched from here in November 1973. Photo credit: NASA

SKYLAB 4 PACIFIC RECOVERY AREA -- A smiling William R. Pogue pauses in hatchway of Skylab 4 command module during recovery activities today aboard the USS New Orleans at the completion of man's longest space journey to date. Pogue splashed down with astronauts Gerald P. Carr and Dr. Edward G. Gibson at 11:17 a.m. EDT Feb. 8, 1974, 84 days after the trio was launched by a Saturn IB rocket from Kennedy Space Center. Circling the globe 1, 214 times aboard the sophisticated Skklab space station during the nearly three-month flight, the astronauts demonstrated man's ability to live and work in space for extended periods.

After the end of the Apollo missions, NASA's next adventure into space was the marned spaceflight of Skylab. Using an S-IVB stage of the Saturn V launch vehicle, Skylab was a two-story orbiting laboratory, one floor being living quarters and the other a work room. The objectives of Skylab were to enrich our scientific knowledge of the Earth, the Sun, the stars, and cosmic space; to study the effects of weightlessness on living organisms, including man; to study the effects of the processing and manufacturing of materials utilizing the absence of gravity; and to conduct Earth resource observations. At the Marshall Space Flight Center (MSFC), astronauts and engineers spent hundreds of hours in an MSFC Neutral Buoyancy Simulator (NBS) rehearsing procedures to be used during the Skylab mission, developing techniques, and detecting and correcting potential problems. The NBS was a 40-foot deep water tank that simulated the weightlessness environment of space. This photograph shows astronaut Ed Gibbon (a prime crew member of the Skylab-4 mission) during the neutral buoyancy Skylab extravehicular activity training at the Apollo Telescope Mount (ATM) mockup. One of Skylab's major components, the ATM was the most powerful astronomical observatory ever put into orbit to date.

Kennedy Space Center Director Bob Cabana is photographed next to a memorial wreath and portrait of former NASA astronaut Gerald “Jerry” Carr during a remembrance ceremony on Aug. 31, 2020. The ceremony was held at the Heroes and Legends exhibit within the Astronaut Hall of Fame at Kennedy’s visitor complex. Carr was commander of the Skylab 4 mission – the final, crewed mission of the Skylab program. He passed away Aug. 26 at the age of 88.