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Laika ( ; , ; – 3 November 1957) was a Soviet space dog who was one of the first
animals in space Animals in space originally served to test the survivability of spaceflight, before human spaceflights were attempted. Later, many species were flown to investigate various biological processes and the effects microgravity and space flight m ...
and the first to
orbit In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an ...
the Earth. A
stray Stray or The Stray or ''variation'', may refer to: Animals * A feral (abandoned or escaped) domestic animal; see also estray * A stray or free-ranging dog Places * Areas of open grassland in North Yorkshire: ** Strays of York ** The Stray (Harro ...
mongrel A mongrel, mutt, or mixed-breed dog is a dog that does not belong to one officially recognized breed, including those that result from intentional breeding. Although the term ''mixed-breed dog'' is sometimes preferred, many mongrels have no kn ...
from the streets of Moscow, she flew aboard the
Sputnik 2 Sputnik 2 (, , ''Satellite 2'', or Prosteyshiy Sputnik 2 (PS-2, , ''Simplest Satellite 2'', launched on 3 November 1957, was the second spacecraft launched into Earth orbit, and the first to carry an animal into orbit, a Soviet space dog named ...
spacecraft, launched into low orbit on 3 November 1957. As the technology to re-enter the atmosphere had not yet been developed, Laika's survival was never expected. She died of
hyperthermia Hyperthermia, also known as overheating, is a condition in which an individual's body temperature is elevated beyond normal due to failed thermoregulation. The person's body produces or absorbs more heat than it dissipates. When extreme te ...
hours into the flight, on the craft's fourth orbit. Little was known about the effects of
spaceflight Spaceflight (or space flight) is an application of astronautics to fly objects, usually spacecraft, into or through outer space, either with or without humans on board. Most spaceflight is uncrewed and conducted mainly with spacecraft such ...
on living creatures at the time of Laika's mission, and animal flights were viewed by engineers as a necessary precursor to human missions. The experiment, which monitored Laika's vital signs, aimed to prove that a living organism could survive being launched into orbit and continue to function under conditions of weakened gravity and increased radiation, providing scientists with some of the first data on the
biological effects of spaceflight The effects of spaceflight on the human body are complex and largely harmful over both short and long term. Significant adverse effects of long-term weightlessness include muscle atrophy and deterioration of the skeleton ( spaceflight osteopeni ...
. Laika's death was possibly caused by a failure of the central R7 sustainer to separate from the payload. The true cause and time of her death were not made public until 2002; instead, it was widely reported that she died when her oxygen ran out on day six or, as the Soviet government initially claimed, she was
euthanised Animal euthanasia (euthanasia from ; "good death") is the act of killing an animal humanely, most commonly with injectable drugs. Reasons for euthanasia include incurable (and especially painful) conditions or diseases, lack of resources to con ...
prior to
oxygen depletion Hypoxia (''hypo'': 'below', ''oxia'': 'oxygenated') refers to low oxygen conditions. Hypoxia is problematic for air-breathing organisms, yet it is essential for many anaerobic organisms. Hypoxia applies to many situations, but usually refers to ...
. In 2008, a small monument to Laika depicting her standing atop a rocket was unveiled near the military research facility in Moscow that prepared her flight. She also appears on the ''
Monument to the Conquerors of Space A monument is a type of structure that was explicitly created to commemorate a person or event, or which has become relevant to a social group as a part of their remembrance of historic times or cultural heritage, due to its artistic, historical ...
'' in Moscow.


Sputnik 2

After the success of
Sputnik 1 Sputnik 1 (, , ''Satellite 1''), sometimes referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program ...
in October 1957,
Nikita Khrushchev Nikita Sergeyevich Khrushchev (– 11 September 1971) was the General Secretary of the Communist Party of the Soviet Union, First Secretary of the Communist Party of the Soviet Union from 1953 to 1964 and the Premier of the Soviet Union, Chai ...
, leader of the Soviet Union, wanted a spacecraft launched on 7 November 1957 to celebrate the 40th anniversary of the
October Revolution The October Revolution, also known as the Great October Socialist Revolution (in Historiography in the Soviet Union, Soviet historiography), October coup, Bolshevik coup, or Bolshevik revolution, was the second of Russian Revolution, two r ...
. Khrushchev specifically wanted to deliver a "space spectacular", a mission that would repeat the triumph of Sputnik1, stunning the world with Soviet prowess. While construction had already started on
Sputnik 3 Sputnik 3 (, Satellite 3) was a Soviet satellite launched on 15 May 1958 from Baikonur Cosmodrome by a modified R-7/SS-6 ICBM. The scientific satellite carried a large array of instruments for geophysical research of the upper atmosphere and n ...
, a more sophisticated satellite, it would not be ready until December. To meet the November deadline, a new simple satellite would need to be built.
Sergei Korolev Sergei Pavlovich Korolev (14 January 1966) was the lead Soviet Aerospace engineering, rocket engineer and spacecraft designer during the Space Race between the United States and the Soviet Union in the 1950s and 1960s. He invented the R-7 Sem ...
proposed that a dog be placed in the satellite, an idea which was quickly adopted by planners. Soviet rocket engineers had long intended a canine orbit before attempting human spaceflight; since 1951, they had lofted 12 dogs into sub-orbital space on ballistic flights, working gradually toward an orbital mission set for some time in 1958. To satisfy Khrushchev's demands, they expedited the orbital canine flight for the November launch. According to Russian sources, the official decision to launch Sputnik2 was made on 10 or 12 October, leaving less than four weeks to design and build the spacecraft. Sputnik2, therefore, was something of a rushed job, with most elements of the spacecraft being constructed from rough sketches. Aside from the primary mission of sending a living passenger into space, Sputnik2 also contained instrumentation for measuring
solar irradiance Solar irradiance is the power per unit area (surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre ( ...
and
cosmic ray Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the ...
s. The craft was equipped with a life-support system consisting of an
oxygen generator A chemical oxygen generator is a device that releases oxygen via a chemical reaction. The oxygen source is usually an inorganic superoxide, chlorate, or perchlorate. Ozonides are a promising group of oxygen sources, as well. The generators are usu ...
and devices to avoid oxygen poisoning and to absorb
carbon dioxide Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
. A fan, designed to activate whenever the cabin temperature exceeded , was added to keep the dog cool. Enough food (in a gelatinous form) was provided for a seven-day flight, and the dog was fitted with a bag to collect waste. A harness was designed to be fitted to the dog, and there were chains to restrict her movements to standing, sitting, or lying down; there was no room to turn around in the cabin. An electrocardiogram monitored heart rate and further instrumentation tracked respiration rate, maximum arterial pressure, and the dog's movements.


Training

Laika was found as a stray dog wandering the streets of Moscow. Soviet scientists chose to use Moscow strays since they assumed that such animals had already learned to endure conditions of extreme cold and hunger. She was a
mongrel A mongrel, mutt, or mixed-breed dog is a dog that does not belong to one officially recognized breed, including those that result from intentional breeding. Although the term ''mixed-breed dog'' is sometimes preferred, many mongrels have no kn ...
female, approximately three years old. Another account reported that she weighed about . Soviet personnel gave her several names and nicknames, among them Kudryavka (Russian for ''Little Curly''), Zhuchka (''Little Bug''), and Limonchik (''Little Lemon''). Laika, the Russian name for several breeds of dogs similar to the
husky Husky is a general term for a type of dog used in the polar regions, primarily and specifically for work as sled dogs. It refers to a traditional northern type, notable for its cold-weather tolerance and overall hardiness. Modern racing huskies ...
, was the name popularised around the world. Its literal translation would be "Barker", from the Russian verb "layat" (''лаять''), "to bark". According to some accounts, the technicians actually renamed her from Kudryavka to Laika owing to her loud barking. The American press dubbed her Muttnik ('' mutt'' + suffix ''
-nik The English suffix -nik is of Slavic origin. It approximately corresponds to the suffix "-er" and nearly always denotes an agent noun (that is, it describes a person related to the thing, state, habit, or action described by the word to which the ...
'') as a pun on
Sputnik Sputnik 1 (, , ''Satellite 1''), sometimes referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space progra ...
, or referred to her as ''Curly''. Her true pedigree is unknown, although it is generally accepted that she was part husky or other Nordic breed, and possibly part
terrier Terrier () is a Dog type, type of dog originally bred to hunt vermin. A terrier is a dog of any one of many Dog breed, breeds or landraces of the terrier Dog type, type, which are typically small, wiry, Gameness, game, and fearless. There are fi ...
. NASA refers to Laika as a "part- Samoyed terrier". A Russian magazine described her temperament as phlegmatic, saying that she did not quarrel with other dogs. The Soviet Union and United States had previously sent animals only on
sub-orbital A sub-orbital spaceflight is a spaceflight in which the spacecraft reaches outer space, but its trajectory intersects the surface of the gravitating body from which it was launched. Hence, it will not complete one orbital revolution, will no ...
flights. Three dogs were trained for the Sputnik2 flight: Albina, Mushka, and Laika. Soviet space-life scientists Vladimir Yazdovsky and Oleg Gazenko trained the dogs. To adapt the dogs to the confines of the tiny cabin of Sputnik2, they were kept in progressively smaller cages for periods of up to twenty days. The extensive close confinement caused them to stop urinating or defecating, made them restless, and caused their general condition to deteriorate.
Laxatives Laxatives, purgatives, or aperients are substances that loosen human feces, stools and increase defecation, bowel movements. They are used to treat and prevent constipation. Laxatives vary as to how they work and the side effects they may have. ...
did not improve their condition, and the researchers found that only long periods of training proved effective. The dogs were placed in
centrifuge A centrifuge is a device that uses centrifugal force to subject a specimen to a specified constant force - for example, to separate various components of a fluid. This is achieved by spinning the fluid at high speed within a container, thereby ...
s that simulated the acceleration of a rocket launch and were placed in machines that simulated the noises of the spacecraft. This caused their pulses to double and their
blood pressure Blood pressure (BP) is the pressure of Circulatory system, circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term ...
to increase by . The dogs were trained to eat a special high-nutrition gel that would be their food in space. It was made up of 40%
bread crumbs Breadcrumbs are a culinary ingredient consisting of flour or crumbled bread of varying dryness, sometimes with seasonings added. They are used for a variety of purposes, including breading or crumbing foods before frying (such as breaded cut ...
, 40% powdered meat and 20% beef fat mixed with
agar Agar ( or ), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from " ogonori" and " tengusa". As found in nature, agar is a mixture of two components, t ...
and water. Presumably the formula was of water, agar, and of food. Ten days before the launch, Vladimir Yazdovsky chose Laika to be the primary flight dog. Before the launch, Yazdovsky took Laika home to play with his children. In a book chronicling the story of Soviet space medicine, he wrote, "Laika was quiet and charming... I wanted to do something nice for her: She had so little time left to live."


Preflight preparations

Yazdovsky made the final selection of dogs and their designated roles. Laika was to be the "flight dog"a sacrifice to science on a one-way mission to space. Albina, who had already flown twice on a high-altitude test
rocket A rocket (from , and so named for its shape) is a vehicle that uses jet propulsion to accelerate without using any surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely ...
, was to act as Laika's backup. She was not sent as the primary due to Albina recently giving birth to three pups, and thus Yazdovsky thought it cruel to send Albina the primary and separate a mother from their children. The third dog, Mushka, was a " control dog"she was to stay on the ground and be used to test instrumentation and
life support Life support comprises the treatments and techniques performed in an emergency in order to support life after the failure of one or more vital organs. Healthcare providers and emergency medical technicians are generally certified to perform bas ...
. Before leaving for the
Baikonur Cosmodrome The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian Human spaceflight, crewed spaceflights are l ...
, Yazdovsky and Gazenko conducted surgery on the dogs, routing the cables from the transmitters to the sensors that would measure breathing, pulse, and blood pressure. Because the existing airstrip at Turatam near the cosmodrome was small, the dogs and crew had to be first flown aboard a Tu104 plane to
Tashkent Tashkent (), also known as Toshkent, is the Capital city, capital and List of cities in Uzbekistan, largest city of Uzbekistan. It is the most populous city in Central Asia, with a population of more than 3 million people as of April 1, 2024. I ...
. From there, a smaller and lighter Il14 plane took them to Turatam. Training of dogs continued upon arrival; one after another they were placed in the capsules to get familiar with the feeding system. According to a
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
document, Laika was placed in the capsule of the satellite on 31 October 1957three days before the start of the mission. At that time of year, the temperatures at the launch site were extremely low, and a hose connected to a heater was used to keep her container warm. Two assistants were assigned to keep a constant watch on Laika before launch. Just prior to liftoff on 3 November 1957, from Baikonur Cosmodrome, Laika's fur was sponged in a weak
ethanol Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula . It is an Alcohol (chemistry), alcohol, with its formula also written as , or EtOH, where Et is the ps ...
solution and carefully groomed, while
iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...
was painted onto the areas where sensors would be placed to monitor her bodily functions. One of the technicians preparing the capsule before final lift-off stated: "After placing Laika in the container and before closing the hatch, we kissed her nose and wished her bon voyage, knowing that she would not survive the flight."


Voyage

Accounts of the time of launch vary from source to source, given as 05:30:42 Moscow Time or 07:22 Moscow Time. At peak acceleration, Laika's respiration increased to between three and four times the pre-launch rate. The sensors showed her heart rate was 103 beats/min before launch and increased to 240 beats/min during the early acceleration. After reaching orbit, Sputnik2's
nose cone A nose cone is the conically shaped forwardmost section of a rocket, guided missile or aircraft, designed to modulate oncoming fluid dynamics, airflow behaviors and minimize aerodynamic drag. Nose cones are also designed for submerged wat ...
was jettisoned successfully; however, the "Block A" core did not separate as planned, preventing the thermal control system from operating correctly. Some of the
thermal insulation Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. Thermal insulation can be achieved with s ...
tore loose, raising the cabin temperature to . After three hours of
weightlessness Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) or, incorrectly, zero gravity. Weight is a measurement of the fo ...
, Laika's pulse rate had settled back to 102 beats/min, three times longer than it had taken during earlier ground tests, an indication of the stress she was under. The early
telemetry Telemetry is the in situ collection of measurements or other data at remote points and their automatic transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek roots ''tele'', 'far off', an ...
indicated that Laika was agitated but eating her food. After approximately five to seven hours into the flight, no further signs of life were received from the spacecraft. The Soviet scientists had planned to euthanise Laika with a serving of poisoned food. For many years, the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
gave conflicting statements that she had died either from
asphyxia Asphyxia or asphyxiation is a condition of deficient supply of oxygen to the body which arises from abnormal breathing. Asphyxia causes generalized hypoxia, which affects all the tissues and organs, some more rapidly than others. There are m ...
, when the batteries failed, or that she had been euthanised. Many rumours circulated about the exact manner of her death. In 1999, several Russian sources reported that Laika had died when the cabin overheated on the fourth day. In October 2002, Dimitri Malashenkov, one of the scientists behind the Sputnik2 mission, revealed that Laika had died by the fourth circuit of flight from overheating. According to a paper he presented to the World Space Congress in
Houston, Texas Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...
, "It turned out that it was practically impossible to create a reliable temperature control system in such limited time constraints." Over five months later, after 2,570 orbits, Sputnik2 (including Laika's remains) disintegrated during re-entry on 14 April 1958.


Ethics of animal testing

Due to the overshadowing issue of the Soviet–U.S.
Space Race The Space Race (, ) was a 20th-century competition between the Cold War rivals, the United States and the Soviet Union, to achieve superior spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between t ...
, the ethical issues raised by this experiment, which were very concerning in the west, went largely unaddressed for some time. As newspaper clippings from 1957 show, the press was initially focused on reporting the political perspective, while Laika's health and retrievalor lack thereofonly became an issue later. Sputnik 2 was not designed to be retrievable, and it had always been accepted that Laika would die. The mission sparked a debate across the globe on the mistreatment of animals and
animal testing Animal testing, also known as animal experimentation, animal research, and ''in vivo'' testing, is the use of animals, as model organisms, in experiments that seek answers to scientific and medical questions. This approach can be contrasted ...
in general to advance science. In the United Kingdom, the National Canine Defence League called on all dog owners to observe a minute's silence on each day Laika remained in space, while the
Royal Society for the Prevention of Cruelty to Animals The Royal Society for the Prevention of Cruelty to Animals (RSPCA) is a charity operating in England and Wales which promotes animal welfare. The RSPCA is funded primarily by voluntary donations. Founded in 1824, it is the oldest and largest a ...
(RSPCA) received protests even before
Radio Moscow Radio Moscow (), also known as Radio Moscow World Service, was the official international broadcasting station of the Union of Soviet Socialist Republics until 1993, when it was reorganized into Voice of Russia, which was subsequently reorga ...
had finished announcing the launch.
Animal rights Animal rights is the philosophy according to which many or all Animal consciousness, sentient animals have Moral patienthood, moral worth independent of their Utilitarianism, utility to humans, and that their most basic interests—such as ...
groups at the time called on members of the public to protest at Soviet embassies. Others demonstrated outside the United Nations in New York. Laboratory researchers in the US offered some support for the Soviets, at least before the news of Laika's death. In
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
countries, open criticism of the Soviet space program was difficult because of political censorship, but there were notable cases of criticism in Polish scientific circles. A Polish scientific periodical, ''Kto, Kiedy, Dlaczego'' ("Who, When, Why"), published in 1958, discussed the mission of Sputnik2. In the periodical's section dedicated to astronautics, Krzysztof Boruń described the Sputnik2 mission as "regrettable" and criticised not bringing Laika back to Earth alive as "undoubtedly a great loss for science". In the Soviet Union, there was less controversy. Neither the media, books in the following years, nor the public openly questioned the decision to send a dog into space. In 1998, after the collapse of the Soviet regime, Oleg Gazenko, one of the scientists responsible for sending Laika into space, expressed regret for allowing her to die: Future space missions carrying dogs would be designed to be recovered; the first successful recovery followed the flight of Korabl-Sputnik 2, wherein the dogs
Belka and Strelka Belka (Белка, literally, "squirrel", or alternatively "Whitey") and Strelka (Стрелка, "Arrow") were dogs that spent a day in space aboard Korabl-Sputnik 2 (Sputnik 5) on 19 August 1960 before safely returning to Earth. They were the f ...
, alongside dozens of other organisms, safely returned to Earth. Nonetheless, four other dogs later died in Soviet space missions: Bars and Lisichka were killed when their R7 rocket exploded shortly after launch on 28 July 1960, while Pchyolka and Mushka died when Korabl-Sputnik 3 suffered an emergency and had to be detonated.


Tribute

Laika is memorialised in the form of a statue and plaque at Star City, the Russian Cosmonaut training facility. Created in 1997, Laika is positioned behind the cosmonauts with her ears erect. The
Monument to the Conquerors of Space A monument is a type of structure that was explicitly created to commemorate a person or event, or which has become relevant to a social group as a part of their remembrance of historic times or cultural heritage, due to its artistic, historical ...
in Moscow, constructed in 1964, also includes Laika. On 11 April 2008 at the military research facility where staff had been responsible for readying Laika for the flight, officials unveiled a monument of her poised on top of a space rocket. Stamps and envelopes picturing Laika were produced, as well as branded cigarettes and matches. In 1988 the Mexican band
Mecano Mecano was a Spanish pop band formed in 1981 and active until 1992. Mecano became one of the most successful Spanish pop bands of all time. The band is still the best-selling Spanish band, with over 20 million records worldwide. They were cons ...
releases the song paying tribute to the flight of the dog. In in the end the song alludes to Laika's death: "There is one less dog on the Earth / And one more star in the sky".
Karl Schroeder Karl Schroeder () (born September 4, 1962) is a Canadian science fiction author and a professional futurist. His novels present far-future speculations on topics such as nanotechnology, terraforming, augmented reality, and interstellar travel, ...
wrote a pessimistic near future science fiction novellette '' Laika's Ghost'' with the idea that in the pragmatic world, "only people ready to take up the dream of flight to other worlds are aged remnants of the former Soviet Union". The 2007 graphic novel ''
Laika Laika ( ; , ; – 3 November 1957) was a Soviet space dog who was one of the first animals in space and the first to orbit the Earth. A stray mongrel from the streets of Moscow, she flew aboard the Sputnik 2 spacecraft, launched into lo ...
'' by Nick Abadzis won several awards.


Alternative endings

There are several science fiction novels where Laika is rescued by aliens, including ''Intervention'' by Julian May, ''Weight'', by
Jeanette Winterson Jeanette Winterson (born 27 August 1959) is an English author. Her first book, '' Oranges Are Not the Only Fruit'', was a semi-autobiographical novel about a lesbian growing up in an English Pentecostal community. Other novels explore gender ...
and in the
Flash Gordon Flash Gordon is the protagonist of a space adventure comic strip created and originally drawn by Alex Raymond. First published January 7, 1934, the strip was inspired by, and created to compete with, the already established ''Buck Rogers'' ...
comic strip titled "Laika". Norwegian singer
Emmy The Emmy Awards, or Emmys, are an extensive range of awards for artistic and technical merit for the television industry. A number of annual Emmy Award ceremonies are held throughout the year, each with their own set of rules and award catego ...
released a song in 2025 titled "
Laika Party "Laika Party" is a song by Norwegian singer and songwriter Emmy (Norwegian singer), Emmy. It was written by Emmy alongside four other songwriters and produced by Henrik Østlund and Jonas Jensen. The song was released on 20 January 2025 through ...
" to compete in the Irish ''Eurosong'' selection for the 2025 Eurovision Song Contest. The song tells a story about the singer wishing that Laika had never died and was living happily in space. Emmy won the selection to represent Ireland at the contest. The song was performed in the second semi-final in Basel but failed to qualify for the Grand Final.


Notes


References


Sources

* * SP-2000-4408
Part 1 (page 1-500)

Part 2 (page 501-1011)
. *


Further reading

*Angliss, Sarah and Uttley, Colin

Retrieved 28 January 2005. *Dubbs, Chris and Burgess, Colin. ''Animals In Space: From Research Rockets to the Space Shuttle'', 2007.


External links

* *
History of Sputnik Missions
{{Authority control 1954 animal births 1957 animal deaths 1957 in spaceflight Sputnik Animals in space Individual dogs Deaths in space 1957 in the Soviet Union Deaths from hyperthermia Dog training Animal testing in the Soviet Union Dogs in human culture Dogs in the Soviet Union