Spacesuits in fiction

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1950 issue of Wonder Story Annual with a woman wearing a spacesuit on the cover Wonder Story Annual 1950.jpg
1950 issue of Wonder Story Annual with a woman wearing a spacesuit on the cover

Science fiction authors have designed imaginary spacesuits for their characters almost since the beginning of fiction set in space.

Contents

Often, comic book creators seem unaware of the effects of internal pressure which tends to inflate a spacesuit in vacuum, and draw their imaginary spacesuits as hanging in folds like a boilersuit; this can often be seen in the Dan Dare stories, where the artist often drew from actual or photographed posed actors. Many space story writers merely mention a "spacesuit" without considering or describing design details, in the same way as they mention a raygun or a spaceship without considering how its mechanism would work.[ original research? ]

The breathing apparatus which is part of the Primary Life Support System of real space suits is always a rebreather type system. However, in illustrations in fiction such as comics, a spacesuit's life support system is often largely composed of two big backpack cylinders, as if it was open circuit; at least one fictional scenario[ which? ] has liquid breathing spacesuits.[ original research? ]

Early concepts

Edison's Conquest of Mars

The spacesuit described in Edison's Conquest of Mars Aa air tight suit.gif
The spacesuit described in Edison's Conquest of Mars

From Edison's Conquest of Mars (1898):

...since it was probable that necessity would arise for occasionally quitting the interior of the electrical ships, Mr. Edison had provided for this emergency by inventing an air-tight dress constructed somewhat after the manner of a diver's suit, but of much lighter material. Each ship was provided with several of these suits, by wearing which one could venture outside the car [spaceship] even when it was beyond the atmosphere of the earth...Provision had been made to meet the terrific cold which we knew would be encountered the moment we had passed beyond the atmosphere—that awful absolute zero which men had measured by anticipation, but never yet experienced—by a simple system of producing within the air-tight suits a temperature sufficiently elevated to counteract the effects of the frigidity without. By means of long, flexible tubes, air could be continually supplied to the wearers of the suits, and by an ingenious contrivance a store of compressed air sufficient to last for several hours was provided for each suit, so that in case of necessity the wearer could throw off the tubes connecting him with the air tanks in the car...Inside the headpiece of each of the electrical suits was the mouthpiece of a telephone. This was connected with a wire which, when not in use, could be conveniently coiled upon the arm of the wearer. Near the ears, similarly connected with wires, were telephonic receivers...When two persons wearing the air-tight dresses wished to converse with one another it was only necessary for them to connect themselves by the wires, and conversation could then be easily carried on.

This illustration of the suit appears to be skintight (note the wrinkles), and to have a soft hood with a built-in fullface mask, rather than a hard helmet, although according to the story the suits had helmets.

This common early idea for a spacesuit would have not worked in reality for several reasons:

Skintight spacesuits (skinsuits) appear in the original Buck Rogers comics published from 1929 on. This comic was so popular that expressions such as "Buck Rogers outfit" for real protective suits that look somewhat like spacesuits entered common usage.

With the rise of the Science fiction pulp magazines in the 1920s many depictions of imaginary spacesuits were created from scratch by artists such as Frank R. Paul, often appearing on the covers of the magazines. Very often these artists' creations were absurd, with such errors as a helmet whose neck hole is too narrow for the head to get through.

Often fictional spacesuits are drawn with two large backpack cylinders as their only life-support gear, as if the exhaled gas is vented to space as in an ordinary open-circuit scuba set.

The Lensman series by E.E. "Doc" Smith features armored spacesuits used in hand-to-hand combat. Some especially heavily armored spacesuits in the series use motors to help the wearer move about.

In Jules Verne's 1865 novel From the Earth to the Moon , the spacesuits resemble the diving suits in Twenty Thousand Leagues Under the Seas by the same writer. [1]

After World War II

Following World War II, fictional spacesuits were influenced both by the real life pressure suits and G-suits which had seen use during the war for high-altitude aviation and also by the speculative articles on space travel which were published in magazines like the Saturday Evening Post and Collier's Weekly by such space pioneers as Wernher von Braun and Willy Ley and which featured carefully considered spacesuit designs.

In comics

In the Tintin comic Explorers of the Moon from the early 1950s, the spacesuits are hard armour with bubble helmets instead of lighter cloth. Snowy's spacesuit is adjusted to fit dogs. [2]

In films

Some early space travel fiction films showed characters in spacesuits much more often than Star Trek and afterwards.

The First Men in the Moon

The First Men in the Moon: the 1899 model space suits. Aa 26a claiming the moon.jpg
The First Men in the Moon: the 1899 model space suits.

In H.G. Wells's original novel, The First Men in the Moon , published in 1901, the Moon has a breathable atmosphere during its two-week-long day and spacesuits are not needed; the spacecraft has an airtight hatch, but no airlock.

The First Men in the Moon: the 1964 model space suits. Aa 09a nasasuit flagfound.jpg
The First Men in the Moon: the 1964 model space suits.

In the film version, made in 1964, the Moon has no atmosphere and no surface vegetation. Two types of spacesuits are featured.

Dan Dare

In the Dan Dare comic series, which started in April 1950 in the "Eagle" comic, the standard Spacefleet spacesuit had no backpack, had a corselet as per Standard Diving Dress, and its life-support system was stated to be between the layers of a double-walled helmet. The spacesuits used in the Dan Dare scenario "Operation Saturn" by the villain Blasco are a different design and have small life-support backpacks. The Dan Dare stories also show various alien spacesuits.

Have Space Suit, Will Travel

1977 edition cover (see File:Have Space suit.jpg for another cover image) Aa Heinlein spacesuit.gif
1977 edition cover (see File:Have Space suit.jpg for another cover image)

Author Robert A. Heinlein's novel Have Space Suit—Will Travel (1958) drew both on these contemporary articles and on his experience designing pressure suits during World War II and featured a detailed description of a very realistic space suit with constant volume joints and fixed helmet and shoulder yoke, which was entered through a frontal gasketed zipper (similar to that in a drysuit).

Front cover illustrations (one shown here, one linked to in its caption) for the novel obviously inspired by contemporary diving apparatus show its life-support backpack as a correctly drawn old-type open-circuit two-cylinder aqualung as used for scuba diving with manifold and large round regulator and A-clamp. The artist avoided the error found in most comic-strip drawings of old-type aqualungs, of drawing each breathing tube coming directly from a cylinder top and no regulator. But to make this type of aqualung (as shown here) work in space, its regulator's existing perforated "wet-side" cover would have to be replaced by a sealed cover with a spring-loaded exit valve to keep a breathable pressure on the "wet" side of the regulator diaphragm. And the whole breathing system would have to be checked for leaks which would be harmless in scuba diving but would blow in space vacuum.

The spacesuits in these drawings differ much, but all depict the helmet base as being wide enough for the wearer to get it on over his head, showing that their artists had paid little attention to the writer's detailed descriptions.

Diver with old-type aqualung Aqualung old type.jpg
Diver with old-type aqualung

In a description of the spacesuit Heinlein appears to be confused about the various effects of oxygen toxicity and bends and nitrogen narcosis. [4]

Heinlein's description of pressure regulation came very close to the experience of astronauts in the Apollo program. His characters preferred to keep the pressure of their suits just high enough for survival, but not high enough to make it difficult to move around, much like the selected design pressure range of the real Apollo A7L suits.

The life support system of the suits in Have Space Suit—Will Travel was very similar to the backup Oxygen Purge System on the real Apollo Primary Life Support System, the only major difference being that the Apollo suits had a largely automatic pressure regulator, and Heinlein's suit had manual pressure regulation.

One major component of modern pressure suit Primary Life Support System backpacks which he missed was the lithium hydroxide canister which absorbs carbon dioxide from the air in the suit: see rebreather. Without this, his suit's breathing apparatus would have to be open circuit and limited to approximately two hours on a filling of oxygen or air, with the time varying according to exertion and cylinder size and his body size.

Another was the cooling system. He correctly recognised that overheating would be a major problem for the wearer of the suit. His cooling system was the same as the Apollo oxygen purge system: waste oxygen by letting it flow at a high rate and use it to dump heat. In practice, real suits used a water supply feeding a sublimator to provide cooling.

In The Cat Who Walks Through Walls the suits are strongly influenced by experience in the space program. He correctly describes a technique for helping an injured man in a pressure suit by decompressing the suit for less than a minute. Earlier books such as Rocket Ship Galileo described horrible injuries for people decompressed for short times.

In The Moon Is a Harsh Mistress Heinlein has people going onto the moon surface for about half a day in daylight and suffering from radiation exposure. In practice, overheating was the biggest risk of lunar surface operations, and cooling systems were easy to build.

Perry Rhodan

The front cover of the first issue of the German pulp science fiction series Perry Rhodan, published in 1961, shows a typical science-fiction open-circuit design with two large backpack cylinders instead of a modern life-support pack.

Armored space suits

Self-sealing and limb-constriction suits

After first real space flights

After the establishment of NASA, and the first space missions, fictional spacesuits tended to follow real spacesuit design, including such features as a large rectangular backpack to hold life support components, except in low-budget science fiction movies and comics which were still inspired more by imagination than by reality.

2001: A Space Odyssey

This film by Stanley Kubrick was groundbreaking for its time and for decades later. At the debut of 2001: A Space Odyssey , (1968) cosmonaut Alexei Leonov and astronaut Ed White had made space walks starting in 1965, followed by a handful of other astronauts, while the first lunar landing was still over a year in the future. Thus space suits had been tested but not on the lunar surface. In the film, space suits play notable roles several times, including in the lunar EVA when the monolith is inspected, and during different events in the journey aboard the Discovery One . The design of the Space Odyssey helmets with a down-facing face plate and jutting top plate was (is) most strikingly different from both the actual 1960's designs including the Apollo lunar suit, and from the advancements in design seen in the decades leading to the real 2001. Kubrick and co-author Arthur C. Clarke forecast rather optimistically that by 2001 there would be ongoing exploration and settlement of the moon and an advanced space construction program, and designs based on their speculations for 30 years later were bold but are still scientifically plausible.

Dune film

During the production of the spacesuits and stillsuits for the film Dune , the prop and costume designers stated a need to avoid "the standard outer-space stuff ... that sort of NASA look". [5]

UFO series

CGI image of alien spacesuits shown in the television series UFO. 2aliens on desert planet.jpg
CGI image of alien spacesuits shown in the television series UFO.

The UFO series of the late 1960s/early 1970s features two types of spacesuit:

The design of the alien spacesuits was revised during filming; in some episodes they are partly covered with bright metallic chainmail, and in some they are as per the image shown. The studio which made the series seems to have had only two alien spacesuit costumes. In the episode "Ordeal" where two aliens carry a human (Foster) who is in an alien spacesuit, one of the aliens has to be out of shot, or else 3 alien spacesuits would have been needed. The helmet splits into front and back halves to get it on over his head.

Space: 1999

In this other Anderson's series (a spin-off of UFO), spacesuits are orange and yellow with a white mechanical object on the torso of any astronaut and with an openable personalised helmet; often the episodes feature a recurring blooper: the astronaut's helmet is accidentally open.

Gundam

Spacesuits are commonly used in the Gundam anime media mix, but are often renamed to avoid confusion with space-use mobile suits. In the Universal Century timeline, spacesuits are called "normal suits"; the After Colony timeline calls them "astrosuit". Two types of spacesuit are frequently seen - as well as the more traditional bulky style, mobile suit pilots wear a thinner lighter suit, better designed for operating a mobile suit's controls. Gundam spacesuits often have a pouch full of adhesive strips, used to temporarily seal tears in the suit (as demonstrated in Mobile Suit Gundam) or cracks in the helmet (as demonstrated in Char's Counterattack).

Perry Rhodan

The German pulp science fiction series Perry Rhodan features a type of spacesuit known as a SERUN, for Semi-Reconstituent Recycling Unit. This suit contains advanced recycling systems that can provide the necessary oxygen, water, and food to keep the inhabitant alive for weeks. It also contains a sophisticated computerized medical treatment system, antigrav units for propulsion, and a generator for a defense screen.

Gravity

The 2013 film Gravity , by Alfonso Cuarón with Sandra Bullock and George Clooney, was both appreciated and criticized for its use of space suits. Besides objections to the unrestricted look of extravehicular activities was the lack of protective undergarments, displayed (not) by Bullock when she removed her suit—lacking critical items such as a liquid cooling and ventilation garment or socks. [6] [7]

Interstellar

In the 2014 film Interstellar , NASA uses futuristic spacesuits during the Lazarus missions and during Cooper and Brand's missions. Cooper also uses a black spacesuit at the film's end.

Scorpion

In the episode "The Old College Try", to survive in subzero temperatures near a quantum computer, Walter wears an A7L spacesuit from the Apollo program.

Sylvester and Happy wears vintage spacesuits, too, but they are probably fictional (like the two characters themselves).

The Martian

In Andy Weir's 2011 novel The Martian , astronauts from the Ares missions use white spacesuits to walk on Mars' surface. The suits in the book are described as similar to the EMU suit.

Movie adaptation

Ridley Scott's 2015 adaptation of the novel features these suits:

Ares III spacesuit

Used by Watney during his period on Mars, this is a small orange and grey spacesuit, equipped with a GoPro-like suitcam, a vocal device which signals about malfunctions and a backpack. Watney crashes his helmet during the explosion of the Hab, but it is replaced by another Ares III helmet (during the rest of the period of Mars) and an Ares IV helmet (during the spaceflight).

Hermes/Ares IV spacesuit

Used by the Hermes crew and projected also for the Ares IV one, is a specialized spacesuit used during the Mars-Earth and Earth-Mars spaceflights on NASA's Hermes spacecraft. Commander Melissa Lewis also uses a Manned Maneuvering Unit (MMU) during the film's end.

Ares V spacesuit

Used by Rick Martinez and the other Ares V astronauts during the end credits of the film, is another suit, seen only during the launch of the Ares V mission.

Skintight spacesuits

The potential for greater mobility and simpler operation with a skintight spacesuit, generally referred to as a space activity suit or mechanical counterpressure suit, make this type of space suit an attractive choice for fiction, where flexibility of use can be a boon to plot development.

Some space story writers whose work mentions flexible skin-tight spacesuits include:

Symbionts

Spider and Jeanne Robinson's novel Starseed (the second volume of their Stardance trilogy) and John Varley's Eight Worlds universe both feature alien symbionts which act as living space suits, supplying their wearer with oxygen and recycling waste gases and deriving their energy from solar power. James Blish's novella How Beautiful With Banners features a spacesuit formed from the protein coat of a genetically modified virus. The suit is able to be controlled by small electrical impulses, supplied by a control box mounted on the wearer's belt.

Space fiction without prominent use of spacesuits

In some space fiction, space suits are largely absent. Spacesuits were seen only once in the original Star Trek TV series (1966–1969), in the episode "The Tholian Web", mostly due to television budget constraints. They play a more significant part in several of the movies: Star Trek: The Motion Picture (1979), Star Trek II: The Wrath of Khan (1982), Star Trek: First Contact (1996), and several episodes of the TV series Star Trek: Voyager (1995–2001). Space suits are far more frequently used in the prequel series Star Trek: Enterprise (2001–2005), though they also doubled as environmental-hazard suits.

Spacesuits appear in all the original Star Wars movies, but only used by pilots of fighter-type spacecraft. Spacesuits used outside spacecraft occur in some Star Wars novels and comics.

Force fields instead of spacesuits

Some fiction scenarios, instead of spacesuits, have a personal force field which keeps a bubble of breathable atmosphere around the user. Examples are:

Related Research Articles

<span class="mw-page-title-main">Space suit</span> Garment worn to keep a human alive in the harsh environment of outer space

A space suit is an environmental suit used for protection from the harsh environment of outer space, mainly from its vacuum as a highly specialized pressure suit, but also its temperature extremes, as well as radiation and micrometeoroids. Basic space suits are worn as a safety precaution inside spacecrafts in case of loss of cabin pressure. For extravehicular activity (EVA) more complex space suits are worn, featuring a portable life support system.

<i>Have Space Suit—Will Travel</i> 1958 SF novel by Robert A. Heinlein

Have Space Suit—Will Travel is a science fiction novel for young readers by American writer Robert A. Heinlein, originally serialized in The Magazine of Fantasy & Science Fiction and published by Scribner's in hardcover in 1958. The last Heinlein novel to be published by Scribner's, it was nominated for a Hugo Award in 1959 and won the Sequoyah Children's Book Award for 1961. Heinlein's engineering expertise enabled him to add realistic detail; during World War II, he had been a civilian aeronautics engineer at a laboratory which developed pressure suits for use at high altitudes.

<span class="mw-page-title-main">Mechanical counterpressure suit</span> Spacesuit providing mechanical pressure using elastic garments

A mechanical counterpressure (MCP) suit, partial pressure suit, direct compression suit, or space activity suit (SAS) is an experimental spacesuit which applies stable pressure against the skin by means of skintight elastic garments. The SAS is not inflated like a conventional spacesuit: it uses mechanical pressure, rather than air pressure, to compress the human body in low-pressure environments. Development was begun by NASA and the Air Force in the late 1950s and then again in the late 1960s, but neither design was used. Research is under way at the Massachusetts Institute of Technology (MIT) on a "Bio-Suit" System which is based on the original SAS concept.

<span class="mw-page-title-main">Extravehicular Mobility Unit</span> Series of semi-rigid two-piece space suit models from the United States

The Extravehicular Mobility Unit (EMU) is an independent anthropomorphic spacesuit that provides environmental protection, mobility, life support, and communications for astronauts performing extravehicular activity (EVA) in Earth orbit. Introduced in 1981, it is a two-piece semi-rigid suit, and is currently one of two types of EVA spacesuits used by crew members on the International Space Station (ISS), the other being the Russian Orlan space suit. It was used by NASA's Space Shuttle astronauts prior to the end of the Shuttle program in 2011.

<i>Men into Space</i> 1959 American TV series or program

Men Into Space is an American black-and-white science fiction television series, produced by Ziv Television Programs, Inc., that was first broadcast by CBS from September 30, 1959, to September 7, 1960. The series depicts future efforts by the United States Air Force to explore and develop outer space. The series' star, William Lundigan, played Col. Edward McCauley.

<span class="mw-page-title-main">Pressure suit</span> Type of protective suit worn in low pressure environments

A pressure suit is a protective suit worn by high-altitude pilots who may fly at altitudes where the air pressure is too low for an unprotected person to survive, even when breathing pure oxygen at positive pressure. Such suits may be either full-pressure or partial-pressure. Partial-pressure suits work by providing mechanical counter-pressure to assist breathing at altitude.

<span class="mw-page-title-main">Apollo/Skylab spacesuit</span> Space suit used in Apollo and Skylab missions

The Apollo/Skylab space suit is a class of space suits used in Apollo and Skylab missions. The names for both the Apollo and Skylab space suits were Extravehicular Mobility Unit (EMU). The Apollo EMUs consisted of a Pressure Suit Assembly (PSA) aka "suit" and a Portable Life Support System (PLSS) that was more commonly called the "backpack". The A7L was the PSA model used on the Apollo 7 through 14 missions.

<span class="mw-page-title-main">Advanced Crew Escape Suit</span> United States spacesuit

The Advanced Crew Escape Suit (ACES), or "pumpkin suit", is a full pressure suit that Space Shuttle crews began wearing after STS-65, for the ascent and entry portions of flight. The suit is a direct descendant of the U.S. Air Force high-altitude pressure suits worn by the two-man crews of the SR-71 Blackbird, pilots of the U-2 and X-15, and Gemini pilot-astronauts, and the Launch Entry Suits (LES) worn by NASA astronauts starting on the STS-26 flight, the first flight after the Challenger disaster. The suit is manufactured by the David Clark Company of Worcester, Massachusetts. Cosmetically the suit is very similar to the LES. ACES was first used in 1994.

<span class="mw-page-title-main">Orlan space suit</span> Series of space suit models from Russia

The Orlan space suit is a series of semi-rigid one-piece space suit models designed and built by NPP Zvezda. They have been used for spacewalks (EVAs) in the Russian space program, the successor to the Soviet space program, and by space programs of other countries, including NASA.

<span class="mw-page-title-main">Environmental suit</span> Clothing worn to protect a person in a hostile environment

An environmental suit is a suit designed specifically for a particular environment, usually one otherwise hostile to humans. An environment suit is typically a one-piece garment, and many types also feature a helmet or other covering for the head. Where the surrounding environment is especially dangerous the suit is completely sealed.

<span class="mw-page-title-main">Mercury spacesuit</span>

The Mercury space suit was a full-body, high-altitude pressure suit originally developed by the B.F. Goodrich Company and the U.S. Navy for pilots of high-altitude fighter aircraft. It is best known for its role as the spacesuit worn by the astronauts of the Project Mercury spaceflights.

<span class="mw-page-title-main">Gemini spacesuit</span> Pressurized spacesuit used in the Gemini program

The Gemini spacesuit is a spacesuit worn by American astronauts for launch, in-flight activities and landing. It was designed by NASA based on the X-15 high-altitude pressure suit. All Gemini spacesuits were developed and manufactured by the David Clark Company in Worcester, Massachusetts.

<span class="mw-page-title-main">Liquid cooling and ventilation garment</span> Garment worn inside a spacesuit for cooling and ventilation

A liquid cooling garment (LCG) is a form-fitting garment that is used to remove body heat from the wearer. It is commonly used in environments where evaporative cooling from sweating and open-air convection cooling does not work or is insufficient, or when the wearer has a biological problem that hinders self-regulation of body temperature.

<span class="mw-page-title-main">Primary life support system</span> Life support device for a space suit

A primarylife support system (PLSS), is a device connected to an astronaut or cosmonaut's spacesuit, which allows extra-vehicular activity with maximum freedom, independent of a spacecraft's life support system. A PLSS is generally worn like a backpack. The functions performed by the PLSS include:

<span class="mw-page-title-main">Suitport</span> Alternative technology to enable extravehicular activity

A suitport or suitlock is an alternative technology to an airlock, designed for use in hazardous environments including in human spaceflight, especially planetary surface exploration. Suitports present advantages over traditional airlocks in terms of mass, volume, and ability to mitigate contamination by—and of—the local environment.

<span class="mw-page-title-main">Constellation Space Suit</span> Planned full pressure space suit system

The Constellation Space Suit was a planned full pressure suit system that would have served as an intra-vehicular activity (IVA) and extra-vehicular activity (EVA) garment for the proposed Project Constellation flights. The design of the suit was announced by NASA on June 11, 2008, and it was to be manufactured by Houston, Texas-based Oceaneering International, the 4th company after the David Clark Company, Hamilton Sundstrand, and ILC Dover to produce life-support hardware, as a prime contractor, for in-flight space use.

<span class="mw-page-title-main">Launch Entry Suit</span>

The Launch Entry Suit (LES), known as the "pumpkin suit", is a partial-pressure suit that was worn by all Space Shuttle crews for the ascent and entry portions of flight from STS-26 (1988) to STS-65 (1994). It was completely phased out by STS-88 and replaced by the ACES suit. The suit was manufactured by the David Clark Company of Worcester, Massachusetts.

<span class="mw-page-title-main">Astronaut propulsion unit</span> Device used for untethered spacewalk

An astronaut propulsion unit is used to move an astronaut relative to the spaceship during a spacewalk. The first astronaut propulsion unit was the Hand-Held Maneuvering Unit (HHMU) used on Gemini 4.

<span class="mw-page-title-main">Z series space suits</span> Series of prototype space suit models

The Z series is a series of prototype extra-vehicular activity (EVA) space suits being developed in the Advanced Extravehicular Mobility Unit (AEMU) project under NASA's Advanced Exploration Systems (AES) program. The suits are being designed to be used for both micro-gravity and planetary EVAs.

<span class="mw-page-title-main">Mars suit</span> Space suit for the Martian surface

A Mars suit or Mars space suit is a space suit for EVAs on the planet Mars. Compared to a suit designed for space-walking in the near vacuum of low Earth orbit, Mars suits have a greater focus on actual walking and a need for abrasion resistance. Mars' surface gravity is 37.8% of Earth's, approximately 2.3 times that of the Moon, so weight is a significant concern, but there are fewer thermal demands compared to open space. At the surface the suits would contend with the atmosphere of Mars, which has a pressure of about 0.6 to 1 kilopascal. On the surface, radiation exposure is a concern, especially solar flare events, which can dramatically increase the amount of radiation over a short time.

References

  1. Evan Mcbride (28 March 2023). "The Revolution of the Space Suit". Hi Techer. Retrieved 20 September 2023.
  2. Andrew Liptak (19 August 2017). "18 space suits from science fiction". The Verge. Retrieved 20 September 2023.
  3. 1977, Ballantine Books, paperback, ISBN   0-345-26071-6
  4. page 27 of the February 2005 edition ( ISBN   1-4165-0549-0)
  5. pp 69 & 71, The Making of Dune, by Ed Naha, publ. R.H.Allen 1984, ISBN   0-426-19641-4
  6. Watkins, Gwynne (7 Oct 2013). "An Astronaut Fact-checks "Gravity"". Vulture. New York Media LLC. Retrieved 4 September 2017.
  7. "Learn About Spacesuits". NASA: Spacesuits and Spacewalks. NASA. 13 November 2008. Archived from the original on 4 July 2020.