Outer Space Treaty

Outer Space Treaty

Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies
Parties   Signatories   Non-parties
Signed	27 January 1967
Location	London, Moscow and Washington, D.C.
Effective	10 October 1967;56 years ago (1967-10-10)
Condition	5 ratifications, including the depositary Governments
Parties	115 [1] [2] [3] [4]
Depositary	Governments of the United Kingdom of Great Britain and Northern Ireland, the Union of Soviet Socialist Republics and the United States of America
Languages	English, French, Russian, Spanish, Chinese and Arabic
Full text
Outer Space Treaty of 1967 at Wikisource

The Outer Space Treaty, formally the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is a multilateral treaty that forms the basis of international space law. Negotiated and drafted under the auspices of the United Nations, it was opened for signature in the United States, the United Kingdom, and the Soviet Union on 27 January 1967, entering into force on 10 October 1967. As of March 2024 ^[update] , 115 countries are parties to the treaty—including all major spacefaring nations—and another 22 are signatories. ^{[1] [5] [6]}

The Outer Space Treaty was spurred by the development of intercontinental ballistic missiles (ICBMs) in the 1950s, which could reach targets through outer space. ^[7] The Soviet Union's launch of Sputnik, the first artificial satellite, in October 1957, followed by a subsequent arms race with the United States, hastened proposals to prohibit the use of outer space for military purposes. On 17 October 1963, the U.N. General Assembly unanimously adopted a resolution prohibiting the introduction of weapons of mass destruction in outer space. Various proposals for an arms control treaty governing outer space were debated during a General Assembly session in December 1966, culminating in the drafting and adoption of the Outer Space Treaty the following January. ^[7]

Key provisions of the Outer Space Treaty include prohibiting nuclear weapons in space; limiting the use of the Moon and all other celestial bodies to peaceful purposes; establishing that space shall be freely explored and used by all nations; and precluding any country from claiming sovereignty over outer space or any celestial body. Although it forbids establishing military bases, testing weapons and conducting military maneuvers on celestial bodies, the treaty does not expressly ban all military activities in space, nor the establishment of military space forces or the placement of conventional weapons in space. ^{[8] [9]} From 1968 to 1984, the OST gave birth to four additional agreements: rules for activities on the Moon; liability for damages caused by spacecraft; the safe return of fallen astronauts; and the registration of space vehicles. ^[10]

OST provided many practical uses and was the most important link in the chain of international legal arrangements for space from the late 1950s to the mid-1980s. OST was at the heart of a 'network' of inter-state treaties and strategic power negotiations to achieve the best available conditions for nuclear weapons world security. The OST also declares that space is an area for free use and exploration by all and "shall be the province of all mankind". Drawing heavily from the Antarctic Treaty of 1961, the Outer Space Treaty likewise focuses on regulating certain activities and preventing unrestricted competition that could lead to conflict. ^[7] Consequently, it is largely silent or ambiguous on newly developed space activities such as lunar and asteroid mining. ^{[11] [12] [13]} Nevertheless, the Outer Space Treaty is the first and most foundational legal instrument of space law, ^[14] and its broader principles of promoting the civil and peaceful use of space continue to underpin multilateral initiatives in space, such as the International Space Station and the Artemis Program. ^{[15] [16]}

Provisions

The Outer Space Treaty represents the basic legal framework of international space law. According to the U.N. Office for Outer Space Affairs (UNOOSA), the core principles of the treaty are: ^[17]

• 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; prohibits their use for testing weapons of any kind, conducting military maneuvers, or establishing military bases, installations, and fortifications
• 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 entities;
• States shall be liable for damage caused by their space objects; and
• States shall avoid harmful contamination of space and celestial bodies.

Among its principles, it bars states party to the treaty from placing weapons of mass destruction in Earth orbit, installing them on the Moon or any other celestial body, or otherwise stationing them in outer space. It specifically limits the use of the Moon and other celestial bodies to peaceful purposes, and expressly prohibits their use for testing weapons of any kind, conducting military maneuvers, or establishing military bases, installations, and fortifications (Article IV). However, the treaty does not prohibit the placement of conventional weapons in orbit, and thus some highly destructive attack tactics, such as kinetic bombardment, are still potentially allowable. ^[18] In addition, the treaty explicitly allows the use of military personnel and resources to support peaceful uses of space, mirroring a common practice permitted by the Antarctic Treaty regarding that continent. The treaty also states that the exploration of outer space shall be done to benefit all countries and that space shall be free for exploration and use by all the states.

Article II of the treaty explicitly forbids any government from "appropriating" a celestial body such as the Moon or a planet, whether by declaration, use, occupation, or "any other means". ^[19] However, the state that launches a space object, such as a satellite or space station, retains jurisdiction and control over that object; ^[20] by extension, a state is also liable for damages caused by its space object. ^[21]

Responsibility for activities in space

Article VI of the Outer Space Treaty deals with international responsibility, stating that "the activities of non-governmental entities in outer space, including the Moon and other celestial bodies, shall require authorization and continuing supervision by the appropriate State Party to the Treaty" and that States Party shall bear international responsibility for national space activities whether carried out by governmental or non-governmental entities.

As a result of discussions arising from Project West Ford in 1963, a consultation clause was included in Article IX of the Outer Space Treaty: "A State Party to the Treaty which has reason to believe that an activity or experiment planned by another State Party in outer space, including the Moon and other celestial bodies, would cause potentially harmful interference with activities in the peaceful exploration and use of outer space, including the Moon and other celestial bodies, may request consultation concerning the activity or experiment." ^{[22] [23]}

Applicability in the 21st century

Being primarily an arms control treaty for the peaceful use of outer space, the Outer Space Treaty offers limited and ambiguous regulations to newer space activities such as lunar and asteroid mining. ^{[11] [13] [24]} It is therefore debated whether the extraction of resources falls within the prohibitive language of appropriation, or whether the use of such resources encompasses the commercial use and exploitation. ^[25]

Seeking clearer guidelines, private U.S. companies lobbied the U.S. government, which in 2015 introduced the U.S. Commercial Space Launch Competitiveness Act of 2015 legalizing space mining. ^[26] Similar national legislation to legalize the appropriation of extraterrestrial resources are now being introduced by other countries, including Luxembourg, Japan, China, India, and Russia. ^{[11] [24] [27] [28]} In addition, the U.S. has led the creation of a series of bilateral agreements known as the Artemis Accords that seek to clarify a number of issue related to the Outer Space Treaty, including the use of space resources. ^[29] This has created some controversy regarding legal claims over the mining of celestial bodies for profit. ^{[24] [25]}

1976 Bogota Declaration

The "Declaration of the First Meeting of Equatorial Countries", also known as the "Bogota Declaration", was one of the few attempts to challenge the Outer Space Treaty. It was promulgated in 1976 by eight equatorial countries to assert sovereignty over those portions of the geostationary orbit that continuously lie over the signatory nations' territory. ^[30] These claims did not receive wider international support or recognition, and were subsequently abandoned. ^[31]

Influence on space law

As the first international legal instrument concerning space, the Outer Space Treaty is considered the "cornerstone" of space law. ^{[32] [33]} It was also the first major achievement of the United Nations in this area of law, following the adoption of the first U.N. General Assembly resolution on space in 1958, ^[34] and the first meeting of the U.N. Committee on the Peaceful Uses of Outer Space (COPUOS) the subsequent year. ^[35]

Within roughly a decade of the treaty's entry into force, several other treaties were brokered by the U.N. to further develop the legal framework for activities in space: ^[33]

• Rescue Agreement (1968)
• Space Liability Convention (1972)
• Registration Convention (1976)
• Moon Treaty (1979)

With the exception of the Moon Treaty, to which only 18 nations are party, all other treaties on space law have been ratified by most major space-faring nations (namely those capable of orbital spaceflight). ^[36] COPUOS coordinates these treaties and other questions of space jurisdiction, aided by the U.N. Office for Outer Space Affairs.

List of parties

The Outer Space Treaty was opened for signature in the United States, the United Kingdom, and the Soviet Union on 27 January 1967, and entered into force on 10 October 1967. As of March 2024, 115 countries are parties to the treaty, while another 22 have signed the treaty but have not completed ratification. ^[1]

Multiple dates indicate the different days in which states submitted their signature or deposition, which varied by location: (L) for London, (M) for Moscow, and (W) for Washington, D.C. Also indicated is whether the state became a party by way of signature and subsequent ratification, by accession to the treaty after it had closed for signature, or by succession of states after separation from some other party to the treaty.

State [1] [2] [3] [4]	Signed	Deposited	Method
Afghanistan	27 Jan 1967 (W) 30 Jan 1967 (M)	17 Mar 1988 (L, M) 21 Mar 1988 (W)	Ratification
Algeria		27 Jan 1992 (W)	Accession
Antigua and Barbuda		16 Nov 1988 (W) 26 Dec 1988 (M) 26 Jan 1989 (L)	Succession from   United Kingdom
Argentina	27 Jan 1967 (W) 18 Apr 1967 (M)	26 Mar 1969 (M, W)	Ratification
Armenia		28 Mar 2018 (M)	Accession
Australia	27 Jan 1967 (W)	10 Oct 1967 (L, M, W)	Ratification
Austria	20 Feb 1967 (L, M, W)	26 Feb 1968 (L, M, W)	Ratification
Azerbaijan		9 Sep 2015 (L)	Accession
Bahamas		11 Aug 1976 (L) 13 Aug 1976 (W) 30 Aug 1976 (M)	Succession from   United Kingdom
Bahrain		7 Aug 2019 (M)	Accession
Bangladesh		14 Jan 1986 (L) 17 Jan 1986 (W) 24 Jan 1986 (M)	Accession
Barbados		12 Sep 1968 (W)	Accession
Belarus	10 Feb 1967 (M)	31 Oct 1967 (M)	Ratification
Belgium	27 Jan 1967 (L, M) 2 Feb 1967 (W)	30 Mar 1973 (W) 31 Mar 1973 (L, M)	Ratification
Benin		19 Jun 1986 (M) 2 Jul 1986 (L) 7 Jul 1986 (W)	Accession
Bosnia and Herzegovina		29 Sep 2020 (L)	Accession
Brazil	30 Jan 1967 (M) 2 Feb 1967 (L, W)	5 Mar 1969 (L, M, W)	Ratification
Bulgaria	27 Jan 1967 (L, M, W)	28 Mar 1967 (M) 11 Apr 1967 (W) 19 Apr 1967 (L)	Ratification
Burkina Faso	3 Mar 1967 (W)	18 Jun 1968 (W)	Ratification
Canada	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification
Chile	27 Jan 1967 (W) 3 Feb 1967 (L) 20 Feb 1967 (M)	8 Oct 1981 (W)	Ratification
China		30 Dec 1983 (W) 6 Jan 1984 (M) 12 Jan 1984 (L)	Accession
Colombia	27 Jan 1967 (W)	21 Mar 2024 (W)	Ratification
Croatia		10 Mar 2023 (W)	Accession
Cuba		3 Jun 1977 (M)	Accession
Cyprus	27 Jan 1967 (W) 15 Feb 1967 (M) 16 Feb 1967 (L)	5 Jul 1972 (L, W) 20 Sep 1972 (M)	Ratification
Czech Republic		1 Jan 1993 (M, W) 29 Sep 1993 (L)	Succession from   Czechoslovakia
Denmark	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification
Dominican Republic	27 Jan 1967 (W)	21 Nov 1968 (W)	Ratification
Ecuador	27 Jan 1967 (W) 16 May 1967 (L) 7 Jun 1967 (M)	7 Mar 1969 (W)	Ratification
Egypt	27 Jan 1967 (M, W)	10 Oct 1967 (W) 23 Jan 1968 (M)	Ratification
El Salvador	27 Jan 1967 (W)	15 Jan 1969 (W)	Ratification
Equatorial Guinea		16 Jan 1989 (M)	Accession
Estonia		19 Apr 2010 (M)	Accession
Fiji		18 Jul 1972 (W) 14 Aug 1972 (L) 29 Aug 1972 (M)	Succession from   United Kingdom
Finland	27 Jan 1967 (L, M, W)	Jul 12, 1967 (L, M, W)	Ratification
France	25 Sep 1967 (L, M, W)	5 Aug 1970 (L, M, W)	Ratification
Germany	27 Jan 1967 (L, M, W)	10 Feb 1971 (L, W)	Ratification
Greece	27 Jan 1967 (W)	19 Jan 1971 (L)	Ratification
Guinea-Bissau		20 Aug 1976 (M)	Accession
Hungary	27 Jan 1967 (L, M, W)	26 Jun 1967 (L, M, W)	Ratification
Iceland	27 Jan 1967 (L, M, W)	5 Feb 1968 (L, M, W)	Ratification
India	3 Mar 1967 (L, M, W)	18 Jan 1982 (L, M, W)	Ratification
Indonesia	27 Jan 1967 (W) 30 Jan 1967 (M) 14 Feb 1967 (L)	25 Jun 2002 (L)	Ratification
Iraq	27 Feb 1967 (L, W) 9 Mar 1967 (M)	4 Dec 1968 (M) 23 Sep 1969 (L)	Ratification
Ireland	27 Jan 1967 (L, W)	17 Jul 1968 (W) 19 Jul 1968 (L)	Ratification
Israel	27 Jan 1967 (L, M, W)	18 Feb 1977 (W) 1 Mar 1977 (L) 4 Apr 1977 (M)	Ratification
Italy	27 Jan 1967 (L, M, W)	4 May 1972 (L, M, W)	Ratification
Jamaica	29 Jun 1967 (L, M, W)	6 Aug 1970 (W) 10 Aug 1970 (L) 21 Aug 1970 (M)	Ratification
Japan	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification
Kazakhstan		11 Jun 1998 (M)	Accession
Kenya		19 Jan 1984 (L)	Accession
North Korea		5 Mar 2009 (M)	Accession
South Korea	27 Jan 1967 (W)	13 Oct 1967 (W)	Ratification
Kuwait		7 Jun 1972 (W) 20 Jun 1972 (L) 4 Jul 1972 (M)	Accession
Laos	27 Jan 1967 (W) 30 Jan 1967 (L) 2 Feb 1967 (M)	27 Nov 1972 (M) 29 Nov 1972 (W) 15 Jan 1973 (L)	Ratification
Lebanon	23 Feb 1967 (L, M, W)	31 Mar 1969 (L, M) 30 Jun 1969 (W)	Ratification
Libya		3 Jul 1968 (W)	Accession
Lithuania		25 Mar 2013 (W)	Accession
Luxembourg	27 Jan 1967 (M, W) 31 Jan 1967 (L)	17 Jan 2006 (L, M, W)	Ratification
Madagascar		22 Aug 1968 (W)	Accession
Mali		11 Jun 1968 (M)	Accession
Malta		22 May 2017 (L)	Accession
Mauritius		7 Apr 1969 (W) 21 Apr 1969 (L) 13 May 1969 (M)	Succession from   United Kingdom
Mexico	27 Jan 1967 (L, M, W)	31 Jan 1968 (L, M, W)	Ratification
Mongolia	27 Jan 1967 (M)	10 Oct 1967 (M)	Ratification
Morocco		21 Dec 1967 (L, M) 22 Dec 1967 (W)	Accession
Myanmar	22 May 1967 (L, M, W)	18 Mar 1970 (L, M, W)	Ratification
Nepal	3 Feb 1967 (M, W) 6 Feb 1967 (L)	10 Oct 1967 (L) 16 Oct 1967 (M) 22 Nov 1967 (W)	Ratification
Netherlands	10 Feb 1967 (L, M, W)	10 Oct 1969 (L, M, W)	Ratification
New Zealand	27 Jan 1967 (L, M, W)	31 May 1968 (L, M, W)	Ratification
Nicaragua	27 Jan 1967 (W) 13 Feb 1967 (L)	30 Jun 2017 (W) 10 Aug 2017 (M) 14 Aug 2017 (L)	Ratification
Niger	1 Feb 1967 (W)	17 Apr 1967 (L) 3 May 1967 (W)	Ratification
Nigeria		14 Nov 1967 (L)	Accession
Norway	3 Feb 1967 (L, M, W)	1 Jul 1969 (L, M, W)	Ratification
Oman		4 Feb 2022 (L)	Accession
Pakistan	12 Sep 1967 (L, M, W)	8 Apr 1968 (L, M, W)	Ratification
Panama	27 Jan 1967 (W)	9 Aug 2023 (W)	Ratification
Papua New Guinea		27 Oct 1980 (L) 13 Nov 1980 (M) 16 Mar 1981 (W)	Succession from   Australia
Paraguay		22 Dec 2016 (L)	Accession
Peru	30 Jun 1967 (W)	28 Feb 1979 (M) 1 Mar 1979 (L) 21 Mar 1979 (W)	Ratification
Poland	27 Jan 1967 (L, M, W)	30 Jan 1968 (L, M, W)	Ratification
Portugal		29 May 1996 (L)	Accession
Qatar		13 Mar 2012 (W)	Accession
Romania	27 Jan 1967 (L, M, W)	9 Apr 1968 (L, M, W)	Ratification
Russia	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification as the   Soviet Union
Saint Vincent and the Grenadines		13 May 1999 (L)	Succession from   United Kingdom
San Marino	21 Apr 1967 (W) 24 Apr 1967 (L) 6 Jun 1967 (M)	29 Oct 1968 (W) 21 Nov 1968 (M) 3 Feb 1969 (L)	Ratification
Saudi Arabia		17 Dec 1976 (W)	Accession
Seychelles		5 Jan 1978 (L)	Accession
Sierra Leone	27 Jan 1967 (L, M) 16 May 1967 (W)	13 Jul 1967 (M) 14 Jul 1967 (W) 25 Oct 1967 (L)	Ratification
Singapore		10 Sep 1976 (L, M, W)	Accession
Slovakia		1 Jan 1993 (M, W) 17 May 1993 (L)	Succession from   Czechoslovakia
Slovenia		8 Feb 2019 (L)	Accession
South Africa	1 Mar 1967 (W)	30 Sep 1968 (W) 8 Oct 1968 (L) 14 Nov 1968 (M)	Ratification
Spain		27 Nov 1968 (L) 7 Dec 1968 (W)	Accession
Sri Lanka	10 Mar 1967 (L)	18 Nov 1986 (L, M, W)	Ratification
Sweden	27 Jan 1967 (L, M, W)	11 Oct 1967 (L, M, W)	Ratification
Switzerland	27 Jan 1967 (L, W) 30 Jan 1967 (M)	18 Dec 1969 (L, M, W)	Ratification
Syria		19 Nov 1968 (M)	Accession
Thailand	27 Jan 1967 (L, M, W)	5 Sep 1968 (L) 9 Sep 1968 (M) 10 Sep 1968 (W)	Ratification
Togo	27 Jan 1967 (W)	26 Jun 1989 (W)	Ratification
Tonga		22 Jun 1971 (M) 7 Jul 1971 (L, W)	Succession from   United Kingdom
Tunisia	27 Jan 1967 (L, W) 15 Feb 1967 (M)	28 Mar 1968 (L) 4 Apr 1968 (M) 17 Apr 1968 (W)	Ratification
Turkey	27 Jan 1967 (L, M, W)	27 Mar 1968 (L, M, W)	Ratification
Uganda		24 Apr 1968 (W)	Accession
Ukraine	10 Feb 1967 (M)	31 Oct 1967 (M)	Ratification
United Arab Emirates		4 Oct 2000 (W)	Accession
United Kingdom	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification
United States	27 Jan 1967 (L, M, W)	10 Oct 1967 (L, M, W)	Ratification
Uruguay	27 Jan 1967 (W) 30 Jan 1967 (M)	31 Aug 1970 (W)	Ratification
Venezuela	27 Jan 1967 (W)	3 Mar 1970 (W)	Ratification
Vietnam		20 Jun 1980 (M)	Accession
Yemen		1 Jun 1979 (M)	Accession
Zambia		20 Aug 1973 (W) 21 Aug 1973 (M) 28 Aug 1973 (L)	Accession

Partially recognized state abiding by treaty

The Republic of China (Taiwan), which is currently recognized by 11 UN member states, ratified the treaty prior to the United Nations General Assembly's vote to transfer China's seat to the People's Republic of China (PRC) in 1971. When the PRC subsequently ratified the treaty, they described the Republic of China's (ROC) ratification as "illegal". The ROC has committed itself to continue to adhere to the requirements of the treaty, and the United States has declared that it still considers the ROC to be "bound by its obligations". ^[5]

State	Signed	Deposited	Method
Republic of China	27 Jan 1967	24 Jul 1970	Ratification

States that have signed but not ratified

21 states have signed but not ratified the treaty.

State	Signed
Bolivia	27 Jan 1967 (W)
Botswana	27 Jan 1967 (W)
Burundi	27 Jan 1967 (W)
Cameroon	27 Jan 1967 (W)
Central African Republic	27 Jan 1967 (W)
Democratic Republic of the Congo	27 Jan 1967 (W) 29 Apr 1967 (M) 4 May 1967 (L)
Ethiopia	27 Jan 1967 (L, W) 10 Feb 1967 (M)
Gambia	2 Jun 1967 (L)
Ghana	27 Jan 1967 (W) 15 Feb 1967 (M) 3 Mar 1967 (L)
Guyana	3 Feb 1967 (W)
Haiti	27 Jan 1967 (W)
Holy See	5 Apr 1967 (L)
Honduras	27 Jan 1967 (W)
Iran	27 Jan 1967 (L)
Jordan	2 Feb 1967 (W)
Lesotho	27 Jan 1967 (W)
Malaysia	20 Feb 1967 (W) 21 Feb 1967 (L) 3 May 1967 (M)
Philippines	27 Jan 1967 (L, W) 29 Apr 1967 (M)
Rwanda	27 Jan 1967 (W)
Somalia	2 Feb 1967 (W)
Trinidad and Tobago	24 Jul 1967 (L) 17 Aug 1967 (M) 28 Sep 1967 (W)

List of non-parties

The remaining UN member states and United Nations General Assembly observer states which have neither ratified nor signed the Outer Space Treaty are: ^[37]

•   Albania
•   Andorra
•   Angola
•   Belize
•   Bhutan
•   Brunei
•   Cambodia
•   Cape Verde
•   Chad
•   Comoros
•   Republic of the Congo
•   Costa Rica
•   Djibouti
•   Dominica
•   East Timor
•   Eritrea
•   Eswatini
•   Gabon
•   Georgia
•   Grenada
•   Guatemala
•   Guinea
•   Ivory Coast
•   Kiribati
•   Kyrgyzstan
•   Latvia
•   Liberia
•   Liechtenstein
•   Malawi
•   Maldives
•   Marshall Islands
•   Mauritania
•   Federated States of Micronesia
•   Moldova
•   Monaco
•   Montenegro
•   Mozambique
•   Namibia
•   Nauru
•   North Macedonia
•   Palau
•   Palestine
•   Saint Kitts and Nevis
•   Saint Lucia
•   Samoa
•   São Tomé and Príncipe
•   Senegal
•   Serbia
•   Solomon Islands
•   South Sudan
•   Sudan
•   Suriname
•   Tajikistan
•   Tanzania
•   Turkmenistan
•   Tuvalu
•   Uzbekistan
•   Vanuatu
•   Zimbabwe

See also

• Common heritage of mankind
• Extraterritorial jurisdiction
• Extraterritorial operation
• Extraterritoriality
• High-altitude nuclear explosion (HANE)
• Human presence in space
• International waters
• International zone
• Kármán line
• Lunar Flag Assembly
• Militarization of space
• Moon Treaty
• SPACE Act of 2015
• Treaty on Open Skies
• United Nations Convention on the Law of the Sea

References

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33. "Space Law Treaties and Principles". unoosa.org. Archived from the original on 23 December 2021. Retrieved 27 September 2021.
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35. Beyond UNISPACE: It's time for the Moon Treaty. Dennis C. O'Brien. Pace Review. 21 January 2019.
36. Status of international agreements relating to activities in outer space as at 1 January 2008 United Nations Office for Outer Space Affairs, 2008
37. United Nations Treaties and Principles on Outer Space- Official Records of the General Assembly, Forty-seventh Session, Supplement No. 20 (A/47/20) - https://www.unoosa.org/pdf/publications/ST_SPACE_061Rev01E.pdf

Further reading

• Annette Froehlich, et al. (2018). A Fresh View on the Outer Space Treaty. Vienna: Springer. ISBN   978-3-319-70433-3.
• Squadron Leader KK Nair's Space: The Frontiers of Modern Defence. Knowledge World Publishers, New Delhi, Chap. 5 "Examining Space Law...", pp. 84–104, available at Google Books.

External links

• International Institute of Space Law
• Full text of the "Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies" in Arabic, Chinese, English, French, Russian, or Spanish
• Status of International Agreements relating to Activities in Outer Space (list of state parties to treaty), UN Office for Outer Space Affairs
• "The Case for Withdrawing from the 1967 Outer Space Treaty"
• Still Relevant (and Important) After All These Years: The case for supporting the Outer Space Treaty
• Introductory note by Vladimír Kopal, procedural history note and audiovisual material on the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies in the Historic Archives of the United Nations Audiovisual Library of International Law
• The Progressive Development of International Space Law by the United Nations —Lecture by Vladimír Kopal] in the Lecture Series of the United Nations Audiovisual Library of International Law
• The Law of Outer Space in the General Legal Field (Commonalities and Particularities) —Lecture by Vladlen Stepanovich Vereshchetin in the Lecture Series of the United Nations Audiovisual Library of International Law
• Humans on Mars and beyond full-text