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The Agreement Governing the Activities of States on the Moon and Other Celestial Bodies,[3] better known as the Moon Treaty or Moon Agreement, is a multilateral treaty that turns jurisdiction of all celestial bodies (including the orbits around such bodies) over to the international community. Thus, all activities must conform to international law, including the United Nations Charter.

Moon Treaty
Agreement Governing the Activities of States on the Moon and Other Celestial Bodies
Ratifications and signatories of the treaty
SignedDecember 18, 1979
LocationNew York, USA
EffectiveJuly 11, 1984
Condition5 ratifications
Parties18[1][2] (as of November 2016)
DepositarySecretary-General of the United Nations
LanguagesEnglish, French, Russian, Spanish, Arabic and Chinese
Moon Treaty at Wikisource

In practice it is a failed treaty because it has not been ratified by any state that engages in self-launched manned space exploration or has plans to do so (e.g. the United States, the larger part of the member states of the European Space Agency, Russia (former Soviet Union), People's Republic of China and Japan) since its creation in 1979, and thus has a negligible effect on actual spaceflight. As of January 2018, 18 states are parties to the treaty.[1]


As a follow-on to the Outer Space Treaty, the Moon Treaty intended to establish a regime for the use of the Moon and other celestial bodies similar to the one established for the sea floor in the United Nations Convention on the Law of the Sea. The treaty would apply to the Moon and to other celestial bodies within the Solar System, other than Earth, including orbits around or other trajectories to or around them.[citation needed]

The treaty makes a declaration that the Moon should be used for the benefit of all states and all peoples of the international community. It also expresses a desire to prevent the Moon from becoming a source of international conflict. To those ends the treaty does the following:[citation needed]

  • Bans any military use of celestial bodies, including weapon testing or as military bases.
  • Bans all exploration and uses of celestial bodies without the approval or benefit of other states under the common heritage of mankind principle (article 11).
  • Requires that the Secretary-General must be notified of all celestial activities (and discoveries developed thanks to those activities).
  • Declares all states have an equal right to conduct research on celestial bodies.
  • Declares that for any samples obtained during research activities, the state that obtained them must consider making part of it available to all countries/scientific communities for research.
  • Bans altering the environment of celestial bodies and requires that states must take measures to prevent accidental contamination of the environments of celestial bodies, including Earth.
  • Bans any state from claiming sovereignty over any territory of celestial bodies.
  • Bans any ownership of any extraterrestrial property by any organization or person, unless that organization is international and governmental.
  • Requires an international regime be set up to ensure safe and orderly development and management of the resources and sharing of the benefits from them.


Participation in the Moon Treaty

The treaty was finalized in 1979 and, after satisfying the condition requiring 5 ratifying states, it entered into force for the ratifying parties in 1984. As of January 2018, 18 states are parties to the treaty,[1] seven of which ratified the agreement and the rest acceded.[1][4] Four additional states have signed but not ratified the treaty.[1][4] The L5 Society and others successfully opposed ratification of the treaty by the United States Senate.[5][6]

List of partiesEdit

State[1][2] Signed Deposited Method
  Armenia 19 Jan 2018 Accession
  Australia 7 Jul 1986 Accession
  Austria 21 May 1980 11 Jun 1984 Ratification
  Belgium 29 Jun 2004 Accession
  Chile 3 Jan 1980 12 Nov 1981 Ratification
  Kazakhstan 11 Jan 2001 Accession
  Kuwait 28 Apr 2014 Accession
  Lebanon 12 Apr 2006 Accession
  Mexico 11 Oct 1991 Accession
  Morocco 25 Jul 1980 21 Jan 1993 Ratification
  Netherlands 27 Jan 1981 17 Feb 1983 Ratification
  Pakistan 27 Feb 1986 Accession
  Peru 23 Jun 1981 23 Nov 2005 Ratification
  Philippines 23 Apr 1980 26 May 1981 Ratification
  Saudi Arabia 18 Jul 2012 Accession
  Turkey 29 Feb 2012[7] Accession
  Uruguay 1 Jun 1981 9 Nov 1981 Ratification
  Venezuela 3 Nov 2016 Accession

List of signatoriesEdit

State[1][2] Signed
  France 29 Jan 1980
  Guatemala 20 Nov 1980
  India 18 Jan 1982
  Romania 17 Apr 1980


  1. ^ a b c d e f g "Agreement Governing the Activities of States on the Moon and Other Celestial Bodies". United Nations Office for Disarmament Affairs. Retrieved 2013-05-16.
  2. ^ a b c "Agreement governing the Activities of States on the Moon and Other Celestial Bodies". United Nations. Retrieved 2014-12-05.
  3. ^ Agreement Governing the Activities of States on the Moon and Other Celestial Bodies, Dec. 5, 1979, 1363 U.N.T.S. 3
  4. ^ a b Status of international agreements relating to activities in outer space as at 1 January 2008 United Nations Office for Outer Space Affairs, 2008
  5. ^ Chapter 5: O'Neills Children, Reaching for the High Frontier, The American Pro-Space Movement 1972-84, by Michael A. G. Michaud, National Space Society.
  6. ^ Listner, Michael (24 October 2011). "The Moon Treaty: failed international law or waiting in the shadows?". The Space Review. 9 October 2015.
  7. ^ "Reference: C.N.124.2012.TREATIES-2 (Depositary Notification)" (PDF). New York, NY: United Nations. Retrieved 2012-04-03.

External linksEdit

  Works related to Moon Treaty at Wikisource