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The militarization of space involves the placement and development of weaponry and military technology in
outer space Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
. The early exploration of space in the mid-20th century had, in part, a military motivation, as the United States and the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
used it as an opportunity to demonstrate ballistic-missile technology and other technologies having the potential for military application. Outer space has since been used as an operating location for military spacecraft such as imaging and
communications satellite A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth ...
s, and some ballistic missiles pass through outer space during their flight. , known deployments of weapons stationed in space include only the
Almaz The Almaz (russian: Алмаз, lit=Diamond) program was a highly secret Soviet military space station program, begun in the early 1960s. Three crewed military reconnaissance stations were launched between 1973 and 1976: Salyut 2, Salyut 3 a ...
space-station armament and pistols such as the TP-82 Cosmonaut survival pistol (for post-landing, pre-recovery use).


History


The Cold War

During the Cold War, the world's two great superpowers—the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
and the
United States of America The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territo ...
—spent large proportions of their GDP on developing military technologies. The drive to place objects in orbit stimulated space research and started the
Space Race The Space Race was a 20th-century competition between two 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 the t ...
. In 1957, the USSR launched the first
artificial satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisoto ...
, ''
Sputnik 1 Sputnik 1 (; see § Etymology) 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. It sent a radio signal back to Earth for ...
''. By the end of the 1960s, both countries regularly deployed satellites.
Reconnaissance satellite A reconnaissance satellite or intelligence satellite (commonly, although unofficially, referred to as a spy satellite) is an Earth observation satellite or communications satellite deployed for military or intelligence applications. Th ...
s were used by militaries to take accurate pictures of their rivals' military installations. As time passed the resolution and accuracy of orbital reconnaissance alarmed both sides of the
iron curtain The Iron Curtain was the political boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union (USSR) to block itself and its ...
. Both the United States and the Soviet Union began to develop
anti-satellite weapon Anti-satellite weapons (ASAT) are space weapons designed to incapacitate or destroy satellites for strategic or tactical purposes. Several nations possess operational ASAT systems. Although no ASAT system has been utilised in warfare, a few ...
s to blind or destroy each other's satellites.
Directed-energy weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include w ...
s,
kamikaze , officially , were a part of the Japanese Special Attack Units of military aviators who flew suicide attacks for the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, intending ...
-style satellites, as well as orbital nuclear explosives were researched with varying levels of success. Spy satellites were, and continue to be, used to monitor the dismantling of military assets in accordance with arms control treaties signed between the two superpowers. To use spy satellites in such a manner is often referred to in treaties as "national technical means of verification". The superpowers developed
ballistic missile A ballistic missile is a type of missile that uses projectile motion to deliver warheads on a target. These weapons are guided only during relatively brief periods—most of the flight is unpowered. Short-range ballistic missiles stay within t ...
s to enable them to use
nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb ...
ry across great distances. As rocket science developed, the range of missiles increased and
intercontinental ballistic missile An intercontinental ballistic missile (ICBM) is a ballistic missile with a range greater than , primarily designed for nuclear weapons delivery (delivering one or more thermonuclear warheads). Conventional, chemical, and biological weapo ...
s (ICBM) were created, which could strike virtually any target on Earth in a timeframe measured in minutes rather than hours or days. To cover large distances ballistic missiles are usually launched into
sub-orbital spaceflight A sub-orbital spaceflight is a spaceflight in which the spacecraft reaches outer space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it will not complete one orbital re ...
. As soon as intercontinental missiles were developed, military planners began programmes and strategies to counter their effectiveness.


United States

Early American efforts included the Nike-Zeus Program, Project Defender, the Sentinel Program and the
Safeguard Program The Safeguard Program was a U.S. Army anti-ballistic missile (ABM) system designed to protect the U.S. Air Force's Minuteman ICBM silos from attack, thus preserving the US's nuclear deterrent fleet. It was intended primarily to protect against ...
. The late 1950s Nike-Zeus programme involved firing Nike nuclear missiles against oncoming ICBMs, thus exploding nuclear warheads over the North Pole. This idea was soon scrapped and work began on Project Defender in 1958. Project Defender attempted to destroy Soviet ICBMs at launch with satellite weapon systems, which orbited over Russia. This programme proved infeasible with the technology from that era. Work then began on the Sentinel Program which used
anti-ballistic missile An anti-ballistic missile (ABM) is a surface-to-air missile designed to counter ballistic missiles (missile defense). Ballistic missiles are used to deliver nuclear, chemical, biological, or conventional warheads in a ballistic flight trajec ...
s (ABM) to shoot down incoming ICBMs. In the late 1950s
United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Si ...
considered detonating an
atomic bomb A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb ...
on the
Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
to display U.S. superiority to the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
and the rest of the world ( Project A119). In 1959, a feasibility study of a possible military base on the Moon ( Project Horizon) was conducted. In 1958, a plan for a 21-airman underground Air Force base on the Moon by 1968 was developed (
Lunex Project The Lunex Project was a US Air Force 1958 plan for a crewed lunar landing prior to the Apollo Program. The final lunar expedition plan in 1961 was for a 21-person underground Air Force base on the Moon by 1968 at a total cost of $7.5 billion. Th ...
). The
Safeguard Program The Safeguard Program was a U.S. Army anti-ballistic missile (ABM) system designed to protect the U.S. Air Force's Minuteman ICBM silos from attack, thus preserving the US's nuclear deterrent fleet. It was intended primarily to protect against ...
was deployed in the mid-1970s and was based on the Sentinel Program. Since the ABM treaty only allowed for construction of a single ABM facility to protect either the nation's capital city or an ICBM field, the Stanley R. Mickelsen Safeguard Complex was constructed near Nekoma, North Dakota to protect the Grand Forks ICBM facility. Though it was only operational as an ABM facility for less than a year, the Perimeter Acquisition Radar (PAR), one of Safeguard's components, was still operational as of 2005. One major problem with the Safeguard Program, and past ABM systems, was that the interceptor missiles, though state-of-the-art, required nuclear warheads to destroy incoming ICBMs. Future ABMs will likely be more accurate and use hit-to-kill or conventional warheads to knock down incoming warheads. The technology involved in such systems was shaky at best, and deployment was limited by the ABM treaty of 1972. In 1983, American president
Ronald Reagan Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician, actor, and union leader who served as the 40th president of the United States from 1981 to 1989. He also served as the 33rd governor of California from 1967 ...
proposed the
Strategic Defense Initiative The Strategic Defense Initiative (SDI), derisively nicknamed the "''Star Wars'' program", was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons ( intercontinental ballist ...
(SDI), a space-based system to protect the United States from attack by strategic nuclear missiles. The plan was ridiculed by some as unrealistic and expensive, and Dr. Carol Rosin nicknamed the policy "Star Wars", after the popular science-fiction movie franchise. Astronomer
Carl Sagan Carl Edward Sagan (; ; November 9, 1934December 20, 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on ex ...
pointed out that in order to defeat SDI, the Soviet Union had only to build more missiles, allowing them to overcome the defence by sheer force of numbers. Proponents of SDI said the
strategy of technology The Strategy of Technology doctrine involves a country using its advantage in technology to create and deploy weapons of sufficient power and numbers so as to overawe or beggar its opponents, forcing them to spend their limited resources on develo ...
would hasten the Soviet Union's downfall. According to this doctrine, Communist leaders were forced to either shift large portions of their GDP to counter SDI, or else watch as their expensive nuclear stockpiles were rendered obsolete.
United States Space Command United States Space Command (USSPACECOM or SPACECOM) is a unified combatant command of the United States Department of Defense, responsible for military operations in outer space, specifically all operations 100 kilometers (62 miles) and grea ...
(USSPACECOM), a unified command of the
United States military The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is ...
, was created in 1985 to help institutionalise the use of
outer space Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
by the United States Armed Forces. The Commander in Chief of U.S. Space Command (CINCUSSPACECOM), with headquarters at Peterson Air Force Base,
Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the ...
was also the Commander in Chief of the bi-national U.S.-Canadian ''
North American Aerospace Defense Command North American Aerospace Defense Command (NORAD ), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection ...
'' (CINCNORAD), and for the majority of time during USSPACECOM's existence also the Commander of the U.S. Air Force major command Air Force Space Command. Military space operations coordinated by USSPACECOM proved to be very valuable for the U.S.-led coalition in the 1991
Persian Gulf War The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...
. The U.S. military has relied on communications, intelligence, navigation, missile warning and weather satellite systems in areas of conflict since the early 1990s, including the Balkans, Southwest Asia and Afghanistan. Space systems are considered indispensable providers of tactical information to U.S. war-fighters. As part of the ongoing initiative to transform the U.S. military, on 26 June 2002, Secretary of Defense
Donald Rumsfeld Donald Henry Rumsfeld (July 9, 1932 – June 29, 2021) was an American politician, government official and businessman who served as Secretary of Defense from 1975 to 1977 under president Gerald Ford, and again from 2001 to 2006 under Preside ...
announced that U.S. Space Command would merge with USSTRATCOM. The UCP directed that
Unified Combatant Command A unified combatant command (CCMD), also referred to as a combatant command, is a joint military command of the United States Department of Defense that is composed of units from two or more service branches of the United States Armed Forces, ...
s be capped at ten, and with the formation of the new United States Northern Command, one would have to be deactivated in order to maintain that level. Thus the USSPACECOM merger into USSTRATCOM. On December 10, 2019, the
United States Space Force The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space ...
was formed as the world's only independent space force. Operation Hardtack 1 Operation Hardtack 1 was a series of nuclear tests carried out by the United States Government in 1958. A major facet of these tests was three high-altitude nuclear tests: YUCCA, ORANGE, and TEAK. YUCCA was detonated April 28 at an altitude of 86,000 feet and had a comparatively small yield of 1.7 kilotons. YUCCA is notable as the first nuclear test carried via balloon. Following tests ORANGE and TEAK were carried out July 31 and August 11 at altitudes of 252,000 feet and 141,000 feet, respectively. The bombs were delivered via rocket and their yields were in the megaton range.


= Starfish Prime

= Starfish Prime was a nuclear test carried out in 1962 over Johnston Atoll by the United States as part of Operation Fishbowl. The 1.4 megaton bomb was detonated at an altitude of 400 km (250 miles), in the ionosphere and was the highest altitude nuclear test ever demonstrated. The test is notable for its Electromagnetic Pulse (EMP) effect, which was felt as far as 1400 km (800 miles) away in Hawaii.


USSR

The Soviet Union was also researching innovative ways of gaining space supremacy. Two of their most notable efforts were the R-36ORB Fractional Orbital Bombardment System (FOBS) and Polyus orbital weapons system. The R-36ORB was a
Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
ICBM An intercontinental ballistic missile (ICBM) is a ballistic missile with a range greater than , primarily designed for nuclear weapons delivery (delivering one or more thermonuclear warheads). Conventional, chemical, and biological weapons ...
in the 1960s that, once launched, would go into a
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never m ...
whereupon it would de-orbit for an attack. This system would approach North America over the
South Pole The South Pole, also known as the Geographic South Pole, Terrestrial South Pole or 90th Parallel South, is one of the two points where Earth's axis of rotation intersects its surface. It is the southernmost point on Earth and lies antipod ...
, thereby striking targets from the opposite direction from that to which
NORAD North American Aerospace Defense Command (NORAD ), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection ...
early warning systems are oriented. The missile was phased out in January 1983 in compliance with the
SALT II The Strategic Arms Limitation Talks (SALT) were two rounds of bilateral conferences and corresponding international treaties involving the United States and the Soviet Union. The Cold War superpowers dealt with arms control in two rounds of ...
treaty. The
SALT II The Strategic Arms Limitation Talks (SALT) were two rounds of bilateral conferences and corresponding international treaties involving the United States and the Soviet Union. The Cold War superpowers dealt with arms control in two rounds of ...
treaty (1979) prohibited the deployment of FOBS systems: :'' Each Party undertakes not to develop, test, or deploy: '' :''(...)'' :''(c) systems for placing into Earth orbit
nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb ...
s or any other kind of
weapons of mass destruction A weapon of mass destruction (WMD) is a chemical, biological, radiological, nuclear, or any other weapon that can kill and bring significant harm to numerous individuals or cause great damage to artificial structures (e.g., buildings), natu ...
, including fractional orbital missiles;'' On May 15, 1987, an Energia rocket flew for the first time. The payload was a prototype orbital weapons platform Polyus (also known as Polus, Skif-DM or 17F19DM), the final version of which according to some reports could be armed with nuclear space mines and defensive cannon. The Polyus weapons platform was designed to defend itself against anti-satellite weapons with recoilless cannon. It was also equipped with a sensor blinding laser to confuse approaching weapons and could launch test targets to validate the fire control system. The attempt to place the satellite into orbit failed.


= Soviet high-altitude nuclear tests

= The Soviet Union executed their own high-altitude tests for the purpose of studying and developing High-Altitude Electromagnetic Pulse (HEMP) weapons. The most notable of these is the 1962 Nuclear Test 184 in which a nuclear bomb was detonated at an altitude of 290 km. The ensuing HEMP damaged a 1000 km long line in Kazakhstan which was designed to be protected from such damage. The electrical damage is comparable to the strongest naturally occurring geomagnetic disturbances recorded.


Post-Cold War

As the Cold War ended with the implosion of the Soviet Union the space race between the two superpowers ended. The United States of America was left as the only superpower on Earth with a large concentration of the world's wealth and technological advancement. Despite the United States' new status in the world, the monopoly of space militarisation is in no way certain. Countries such as
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
,
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
, and
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
have begun their own space programmes, while the
European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are located primarily in Europe, Europe. The union has a total area of ...
collectively works to create satellite systems to rival those of the United States. The USSR Space Forces were established as the Ministry of Defense Space Units in 1982. In 1991, the Soviet Union disintegrated. The
Russian Armed Forces The Armed Forces of the Russian Federation (, ), commonly referred to as the Russian Armed Forces, are the military forces of Russia. In terms of active-duty personnel, they are the world's fifth-largest military force, with at least two m ...
were established on 7 May 1992, enabling the creation of Russian Space Forces later that year on 10 August. In July 1997, the Space Force was dissolved as a separate service arm and incorporated to the
Strategic Rocket Forces The Strategic Rocket Forces of the Russian Federation or the Strategic Missile Forces of the Russian Federation (RVSN RF; russian: Ракетные войска стратегического назначения Российской Фед� ...
along with the Space Missile Defense Forces, which previously were part of the Troops of Air Defense. The Russian Space Forces were officially reborn on June 1, 2001 as an independent section of the Russian military. Post Cold War space militarisation seems to revolve around three types of applications. (The word "seems" is used because much of this subject matter is inconclusively verifiable, due to the high level of secrecy that exists among the
great powers A great power is a sovereign state that is recognized as having the ability and expertise to exert its influence on a global scale. Great powers characteristically possess military and economic strength, as well as diplomatic and soft power in ...
with regard to the details of space sensing systems.) The first application is the continuing development of "spy" or reconnaissance satellites which began in the Cold War era, but has progressed significantly since that time. Spy satellites perform a variety of missions such as high-resolution photography ( IMINT) and communications eavesdropping (
SIGINT Signals intelligence (SIGINT) is intelligence-gathering by interception of '' signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication ...
). These tasks are performed on a regular basis both during peacetime and war operations. Satellites are also used by the nuclear states to provide early warning of missile launches, locate nuclear detonations, and detect preparations for otherwise clandestine or surprise nuclear tests (at least those tests or preparations carried out above-ground); this was the case when, in 1998,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
and
Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
both conducted a series of nuclear tests; in addition, a nuclear-detection satellite of the Vela type was also reported to have detected a nuclear detonation in the
Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by ...
in 1978 that was believed to be a
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...
n nuclear test in what was famously called the Vela Incident. Early-warning satellites can also be used to detect tactical missile launches; this capability was used during
Desert Storm The Gulf War was a 1990–1991 armed campaign waged by a 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Iraq were carried out in two key phases ...
, when America was able to provide advance warning to
Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
of Iraqi
SS-1 SCUD A Scud missile is one of a series of tactical ballistic missiles developed by the Soviet Union during the Cold War. It was exported widely to both Second and Third World countries. The term comes from the NATO reporting name attached to the mi ...
missile launches.


Military satellite

Types of
Reconnaissance satellite A reconnaissance satellite or intelligence satellite (commonly, although unofficially, referred to as a spy satellite) is an Earth observation satellite or communications satellite deployed for military or intelligence applications. Th ...
s *
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
** Lacrosse/Onyx ** Misty/ Sirconic **
Samos Samos (, also ; el, Σάμος ) is a Greek island in the eastern Aegean Sea, south of Chios, north of Patmos and the Dodecanese, and off the coast of western Turkey, from which it is separated by the -wide Mycale Strait. It is also a sepa ...
**
Quasar A quasar is an extremely luminous active galactic nucleus (AGN). It is pronounced , and sometimes known as a quasi-stellar object, abbreviated QSO. This emission from a galaxy nucleus is powered by a supermassive black hole with a mass rangi ...
** Vela *
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
**
Cosmos The cosmos (, ) is another name for the Universe. Using the word ''cosmos'' implies viewing the universe as a complex and orderly system or entity. The cosmos, and understandings of the reasons for its existence and significance, are studied in ...
**
Almaz The Almaz (russian: Алмаз, lit=Diamond) program was a highly secret Soviet military space station program, begun in the early 1960s. Three crewed military reconnaissance stations were launched between 1973 and 1976: Salyut 2, Salyut 3 a ...
(manned) ** Yantar ** Zenit *
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and ...
** Sircon (project cancelled) ** Skynet *
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
** Helios 1B (destroyed) ** Helios 2A *
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...
** SAR-Lupe 1–5 *
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
**
COSMO-SkyMed COSMO-SkyMed (COnstellation of small Satellites for the Mediterranean basin Observation) is an Earth-observation satellite space-based radar system funded by the Italian Ministry of Research and Ministry of Defence and conducted by the Ita ...
*
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
** Information Gathering Satellites *
People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
**
Fanhui Shi Weixing The Fanhui Shi Weixing () series of satellites was China's first reconnaissance satellite program. The satellites were used for military reconnaissance and civilian imagery tasks and completed 23 missions between November 1974 and April 2016. The ...
*
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
** RISAT-1 ** RISAT-2 ** CCI-Sat *
Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
** Ofeq series of photo reconnaissance and radar satellites *
Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = '' Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , ...
** Paz


Global Positioning System (GPS)

The second application of space militarisation currently in use is GPS or
Global Positioning System The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite ...
. This satellite navigation system is used for determining one's precise location and providing a highly accurate time reference almost anywhere on
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's sur ...
or in
Earth orbit Earth orbits the Sun at an average distance of 149.60 million km (92.96 million mi) in a counterclockwise direction as viewed from above the Northern Hemisphere. One complete orbit takes  days (1 sidereal year), during which time E ...
. It uses an
intermediate circular orbit Intermediate may refer to: * Intermediate 1 or Intermediate 2, educational qualifications in Scotland * Intermediate (anatomy), the relative location of an anatomical structure lying between two other structures: see Anatomical terms of location ...
(ICO)
satellite constellation A satellite constellation is a group of artificial satellites working together as a system. Unlike a single satellite, a constellation can provide permanent global or near-global coverage, such that at any time everywhere on Earth at least one s ...
of at least 24 satellites. The GPS system was designed by and is controlled by the
United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national sec ...
and can be used by anyone, free of charge. The cost of maintaining the system is approximately US$400 million per year, including the replacement of ageing satellites. The first of 24 satellites that form the current GPS constellation (Block II) was placed into orbit on February 14, 1989. The 52nd GPS satellite since the beginning in 1978 was launched November 6, 2004 aboard a
Delta II Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 va ...
rocket. The primary military purposes are to allow improved command and control of forces through improved location awareness, and to facilitate accurate targeting of smart bombs,
cruise missiles A cruise missile is a guided missile used against terrestrial or naval targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed. Cruise missiles are designed to deliver a large warhe ...
, or other munitions, and spoofing or jamming location data to civilian navigation receivers during wartime. The satellites also carry nuclear detonation detectors, which form a major portion of the United States Nuclear Detonation Detection System.
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
an concern about the level of control over the GPS network and commercial issues has resulted in the planned
Galileo positioning system Galileo is a global navigation satellite system (GNSS) that went live in 2016, created by the European Union through the European Space Agency (ESA), operated by the European Union Agency for the Space Programme (EUSPA), headquartered in Pra ...
. Russia already operates an independent system called
GLONASS GLONASS (russian: ГЛОНАСС, label=none, ; rus, links=no, Глобальная навигационная спутниковая система, r=Global'naya Navigatsionnaya Sputnikovaya Sistema, t=Global Navigation Satellite System) is ...
(global navigation system); the system operates with 24 satellites that are deployed in 3 orbital planes as opposed to the 4 in which GPS is deployed. The Chinese "Beidou" system provides China a similar regional (not global) navigation capability.


Military communication systems

The third current application of militarisation of space can be demonstrated by the emerging military doctrine of network-centric warfare. Network-centric warfare relies heavily on the use of high-speed communications, which allows all soldiers and branches of the military to view the battlefield in real-time. Real-time technology improves the
situational awareness Situational awareness or situation awareness (SA) is the perception of environmental elements and events with respect to time or space, the comprehension of their meaning, and the projection of their future status. An alternative definition is tha ...
of all of the military's assets and commanders in a given theatre. For example, a
soldier A soldier is a person who is a member of an army. A soldier can be a Conscription, conscripted or volunteer Enlisted rank, enlisted person, a non-commissioned officer, or an Officer (armed forces), officer. Etymology The word ''soldier'' deri ...
in the battle zone can access satellite imagery of enemy positions two blocks away, and if necessary
e-mail Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic (digital) version of, or counterpart to, mail, at a time when "mail" meant ...
the coordinates to a bomber or weapon platform hovering overhead while the commander, hundreds of miles away, watches as the events unfold on a monitor. This high-speed communication is facilitated by a separate
internet The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, p ...
created by the military for the military. Communication satellites hold this system together by creating an informational grid over the given theatre of operations. The
Department of Defense Department of Defence or Department of Defense may refer to: Current departments of defence * Department of Defence (Australia) * Department of National Defence (Canada) * Department of Defence (Ireland) * Department of National Defense (Philipp ...
is currently working to establish a Global Information Grid to connect all military units and branches into a computerised network in order to share information and create a more efficient military.


Military spaceplanes

It was revealed that Soviet officials were concerned that the US
Space Shuttle program The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit crew and cargo from 1981 to 2011. I ...
had such military objectives such as to make a sudden dive into the atmosphere to drop bombs on Moscow and these concerns were part of the motivation behind pursuing their own
Buran program The ''Buran'' program (russian: Буран, , "Snowstorm", "Blizzard"), also known as the "VKK Space Orbiter program" (russian: ВКК «Воздушно-Космический Корабль», lit=Air and Space Ship), was a Soviet and later R ...
me. The NASA uncrewed
spaceplane A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplane ...
project X-37 was transferred to the US Department of Defense in 2004. It is unclear what its military mission would be. The X-37 is akin to a space version of
Unmanned aerial vehicle An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controll ...
.


Weapons in space

Space weapons are
weapon A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, s ...
s used in
space warfare Space warfare is hypothetical combat in which one or more belligerents are situated in outer space. The scope of space warfare therefore includes ''ground-to-space warfare'', such as attacking satellites from the Earth; ''space-to-space warfare ...
. They include weapons that can attack space systems in orbit (i.e.
anti-satellite weapon Anti-satellite weapons (ASAT) are space weapons designed to incapacitate or destroy satellites for strategic or tactical purposes. Several nations possess operational ASAT systems. Although no ASAT system has been utilised in warfare, a few ...
s), attack targets on the earth from space or disable missiles travelling through space. In the course of the militarisation of space, such weapons were developed mainly by the contesting
superpower A superpower is a state with a dominant position characterized by its extensive ability to exert influence or project power on a global scale. This is done through the combined means of economic, military, technological, political and cultural ...
s during the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because t ...
, and some remain under development today. Space weapons are also a central theme in
military science fiction Military science fiction is a subgenre of science fiction that features the use of science fiction technology, mainly weapons, for military purposes and usually principal characters who are members of a military organization involved in military a ...
and sci-fi
video game Video games, also known as computer games, are electronic games that involves interaction with a user interface or input device such as a joystick, controller, keyboard, or motion sensing device to generate visual feedback. This feedba ...
s.


Terrestrial-type weapons in space

The Soviet space station Salyut 3 was fitted with a 23mm cannon, which was successfully test fired at target satellites, at ranges from . As of 2008, it was reported that Russian cosmonauts have regularly carried the TP-82 Cosmonaut survival pistol on Soyuz spacecraft, as part of the emergency landing survival kit. The intent of the weapon is to protect cosmonauts from wild animals in the event of an off-course wilderness landing. The specially designed gun is capable of firing bullets, shotgun shells, or flares.


High-Altitude Electromagnetic Pulses (HEMP)

A high-altitude electromagnetic pulse is a result of an atmospheric nuclear explosion, as demonstrated by the United States’ Starfish Prime and the Soviet Union’s Nuclear Test 184. Though such explosions lack the usual damage caused by nuclear explosions such as physical damage and radioactive fallout, ensuing HEMPs have far-reaching effects on unprotected electronics. The 1962 Starfish Prime test produced an HEMP which caused electronics to fail 1400 km (800) away in Hawaii where about 300 streetlights immediately failed. Soviet tests with HEMPs were executed above land, where a 1000 km power line was shut down, and all telephone lines within 500 km were damaged. HEMPs cause banana-shaped areas of effect, due to the pulse’s interaction with the Earth’s magnetic field. A nuclear weapon detonated at 400 km creates an EMP 2,200 km in radius, large enough to cover the continental United States. However, any nuclear device detonated above 30 km will create an EMP of at least 600 km in radius.


Space warfare

Space warfare is combat that takes place in
outer space Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
, i.e. outside the
atmosphere An atmosphere () is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A ...
. Technically, it refers to
battle A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and for ...
s where the targets themselves are in space. Space warfare therefore includes ''ground-to-space warfare'', such as attacking
satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioiso ...
s from the Earth, as well as ''space-to-space warfare'', such as satellites attacking satellites. It does not include the use of satellites for
espionage Espionage, spying, or intelligence gathering is the act of obtaining secret or confidential information ( intelligence) from non-disclosed sources or divulging of the same without the permission of the holder of the information for a tang ...
,
surveillance Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. This can include observation from a distance by means of electronic equipment, such as ...
, or
military communications Military communications or military signals involve all aspects of communications, or conveyance of information, by armed forces. Military communications span from pre-history to the present. The earliest military communications were delivered ...
, however useful those activities might be. It does not technically include ''space-to-ground warfare'', where orbital objects attack ground, sea or air targets directly, but the public and media frequently use the term to include any conflict which includes space as a theatre of operations, regardless of the intended target. For example, a rapid delivery system in which troops are deployed from orbit might be described as "space warfare," even though the military uses the term as described above. A film was produced by the U.S. Military in the early 1960s called ''Space and National Security'' which depicted space warfare. From 1985 to 2002 there was a
United States Space Command United States Space Command (USSPACECOM or SPACECOM) is a unified combatant command of the United States Department of Defense, responsible for military operations in outer space, specifically all operations 100 kilometers (62 miles) and grea ...
, which in 2002 merged with the
United States Strategic Command United States Strategic Command (USSTRATCOM) is one of the eleven unified combatant commands in the United States Department of Defense. Headquartered at Offutt Air Force Base, Nebraska, USSTRATCOM is responsible for strategic nuclear deter ...
. There is a Russian Space Force, which was established on August 10, 1992, and which became an independent section of the Russian military on December 1, 2001. Only a few incidents of space warfare have occurred in world history, and all were training missions, as opposed to actions against real opposing forces. In the mid-1980s a
USAF The United States Air Force (USAF) is the Aerial warfare, air military branch, service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part ...
pilot in an
F-15 The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather tactical fighter aircraft designed by McDonnell Douglas (now part of Boeing). Following reviews of proposals, the United States Air Force selected McDonnell Douglas's ...
successfully shot down the P78-1, a communications satellite in a orbit. In 2007, the
People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
used a missile system to destroy one of its obsolete satellites (see 2007 Chinese anti-satellite missile test), in 2008 the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
similarly destroyed its malfunctioning satellite USA 193. In 2019,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
followed China and the U.S. by destroying a live satellite. On 15 November 2021, Kosmos 1408, an old Soviet satellite was destroyed by the Russian military using a ground based missile. To date, there have been no human casualties resulting from conflict in space, nor has any ground target been successfully neutralised from orbit. International treaties governing space limit or regulate conflicts in space and limit the installation of weapon systems, especially
nuclear weapons A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bom ...
.


Space treaties

Treaties are agreed to when all parties perceive a benefit from becoming a signatory participant in the treaty. As mutually assured destruction (MAD) became the deterrent strategy between the two superpowers in the Cold War, many countries worked together to avoid extending the threat of nuclear weapons to space based launchers.


Outer Space Treaty

The Outer Space Treaty was considered by the Legal Subcommittee of the United Nations Committee on the Peaceful Uses of Outer Space in 1966. Later that year, agreement was reached in the
United Nations General Assembly The United Nations General Assembly (UNGA or GA; french: link=no, Assemblée générale, AG) is one of the six principal organs of the United Nations (UN), serving as the main deliberative, policymaking, and representative organ of the UN. Curr ...
. The treaty included the following principles: * the exploration and use of outer space shall be carried out for the benefit and in the interests of all countries and shall be the province of all mankind; * outer space shall be free for exploration and use by all States; * outer space is not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means; * States shall not place nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies or station them in outer space in any other manner; * the Moon and other celestial bodies shall be used exclusively for peaceful purposes; * Astronauts shall be regarded as the envoys of mankind; * States shall be responsible for national space activities whether carried out by governmental or non-governmental activities; * States shall be liable for damage caused by their space objects; and * States shall avoid harmful contamination of space and celestial bodies. In summary, the treaty initiated the banning of signatories' placing of
nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb ...
s or any other
weapons of mass destruction A weapon of mass destruction (WMD) is a chemical, biological, radiological, nuclear, or any other weapon that can kill and bring significant harm to numerous individuals or cause great damage to artificial structures (e.g., buildings), natu ...
in orbit of
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's sur ...
, installing them on the
Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
or any other
celestial body An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists in the observable universe. In astronomy, the terms ''object'' and ''body'' are often us ...
, or to otherwise station them in
outer space Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
. The United States, the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and ...
, and the Soviet Union signed the treaty and it entered into effect on October 10, 1967. As of January 1, 2005, 98 States have ratified, and an additional 27 have signed the Outer Space Treaty. Note that this treaty does not ban the placement of weapons in space in general, only nuclear weapons and WMD.


Moon Treaty

The Moon Treaty (not ratified by any space capable state, though signed by some) bans any military use of celestial bodies, including weapon testing, nuclear weapons in orbit, or military bases. The use of military personnel for scientific research or for any other peaceful purposes shall not be prohibited. (Article 3.4)


Limited Test Ban Treaty

In 1963 the Limited Test Ban Treaty was signed by the United States, the United Kingdom, and the Soviet Union. The treaty was a response to growing concerns over the rapidly increasing power of nuclear weapons as well as damage from radioactive fallout. The treaty banned underwater tests and atmospheric tests, and effectively banned underground nuclear tests. The treaty put an end to further testing of high-altitude nuclear tests, and by extension HEMPs.


Other drafts

In February 2008, China and Russia together submitted a draft to the UN known as the ''Treaty on Prevention of the Placement of Weapons in Outer Space and of the Threat or Use of Force against Outer Space Objects'' (PPWT).DeFrieze, D. (2014)
"Defining and regulating the weaponization of space".
The International Relations and Security Network.
The US opposed the draft treaty due to security concerns over its space assets despite the treaty explicitly affirming a State's inherent right of self-defence. On December 4, 2014, the General Assembly of the UN passed two resolutions on preventing an arms race in outer space: *The first resolution, ''Prevention of an arms race in outer space'', "call on all States, in particular those with major space capabilities, to contribute actively to the peaceful use of outer space, prevent an arms race there, and refrain from actions contrary to that objective." There were 178 countries that voted in favour to none against, with 2 abstentions (Israel, United States). *The second resolution, ''No first placement of weapons in outer space'', emphasises the prevention of an arms race in space and states that "other measures could contribute to ensuring that weapons were not placed in outer space." 126 countries voted in favour to 4 against (Georgia, Israel, Ukraine, United States), with 46 abstentions (EU member States abstained on the resolution). The
Prevention of an Arms Race in Outer Space The Prevention of an Arms Race in Outer Space document is a 1981 UN resolutionSee ''Official Records of the General Assembly'', A/RES/36/97 C, 9 December 1981. (Alves 1991, I:5 note 22) that reaffirms the fundamental principles of the 1967 Outer S ...
(PAROS) is a committee subsidiary to the Conference on Disarmament. The PAROS Cttee, which meets at the Palais des Nations in
Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaking part of Switzerland. Situa ...
, has been the forum for discussion of these issues since 1985.


National Missile Defense (NMD)

With the fall of the Soviet Union and the end of the Cold War defense spending was reduced and space research was chiefly focused on peaceful research. American military research is focused on a more modest goal of preventing the United States from being subject to
nuclear blackmail Nuclear blackmail is a form of nuclear strategy in which an aggressor uses the threat of force (public international law), threat of use of nuclear weapons to force an adversary to perform some action or make some concessions. It is a type of exto ...
or nuclear terrorism by a rogue state. This overlapped with militarization of space in the form of ballistic missile defense. Missile defense does not ''station'' weapons in space, but is designed to intercept incoming warheads at a very high altitude, which requires the interceptor to travel into space to achieve the intercept. These missiles can be land-based or sea-based, and most proposed programs use a mix of the two. On 16 December 2002, US President George W. Bush signed National Security Presidential Directive which outlined a plan to begin deployment of operational ballistic missile defense systems by 2004. The following day, the US formally requested from the UK and
Denmark ) , song = ( en, "King Christian stood by the lofty mast") , song_type = National and royal anthem , image_map = EU-Denmark.svg , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of Denmark , establish ...
use of facilities in RAF Fylingdales,
England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...
and
Thule Thule ( grc-gre, Θούλη, Thoúlē; la, Thūlē) is the most northerly location mentioned in ancient Greek and Roman literature and cartography. Modern interpretations have included Orkney, Shetland, northern Scotland, the island of Saar ...
,
Greenland Greenland ( kl, Kalaallit Nunaat, ; da, Grønland, ) is an island country in North America that is part of the Kingdom of Denmark. It is located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland ...
, respectively, as a part of the NMD Program.Lennon, Alexander T.J. ''Contemporary Nuclear Debates'', (Cambridge:MIT Press), 1999, pp. 101–109. The administration continued to push the program, but received pushback from multiple fronts. Firstly, some scientists opposed the program and raised ethical objections. Secondly, some trial-and-error technical failures during development became highly publicized, though from a technical standpoint they were unsurprising and even expected. The projected cost of the program for the years 2004 to 2009 was 53 billion US dollars, making it the largest single line in
The Pentagon The Pentagon is the headquarters building of the United States Department of Defense. It was constructed on an accelerated schedule during World War II. As a symbol of the U.S. military, the phrase ''The Pentagon'' is often used as a metony ...
's budget.


See also


References

*For a more complete account on the doctrinal precepts of acquisition of the high ground, ref Squadron Leader KK Nair,
Spy satellites used for arms control monitoring
* {{Spaceflight *