The United Nations Office of Outer Space Affairs (UNOOSA) is the principal UN office responsible for leveraging the benefits of outer space globally. It operates within the Department of Political Affairs. UNOOSA was initially created to service the needs of the Committee on the Peaceful Uses of Outer Space (COPUOS) that was established in 1959. COPUOS and continues to meet annually to discuss questions relating to current and future activities in space. Issues relating to the militarization of outer space are dealt with by the U.N. Conference on Disarmament.
The Space Treaties and related international instruments are conveniently available in a U.N. Compendium and are also available in their original form from the UNOOSA website > Space Law > Treaties and Principles
UNOOSA organizes and works with nation states and space agencies (for example, NASA and the ESA) drafting legislation and guidelines for the safe and sustainable use of outer space.
There are five primary treaties that govern the international use and exploration of outer space. They include:
The Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, Jan. 27, 1967, 18 U.S.T. 2410, 610 U.N.T.S. 205. Known as the Outer Space Treaty and often referred to as the Magna Carter of Space Law. the Outer Space Treaty provides the basic framework of international space law. The United States signed this treaty on January 27, 1967, and ratified it on May 24, 1967. This treaty entered into force on October 10, 1967 . It was open for signature on January 27, 1967.
Agreement on the Rescue of Astronauts, the Return of Astronauts and the Return of Objects Launched into Outer Space, Apr. 22, 1968, 19 U.S.T. 7570, 672 U.N.T.S. 119. The Rescue Agreement entered into force on December 3, 1968 and was ratified by the United States. It was open for signature on April 22, 1968.
Convention on International Liability for Damage Caused by Space Objects , Mar. 29, 1972, 24 U.S.T. 2389, 961 U.N.T.S. 187. The Liability Convention entered into force on September 1, 1972 and was signed and ratified by the United States on September 10, 1972. It was open for signature on March 29, 1972.
Convention on the Registration of Objects Launched into Outer Space, Jan. 14, 1975, 28 U.S.T. 695, 1023 U.N.T.S. 15. The Registration Convention was open for signature on January 14, 1975. It entered into force on September 15, 1976. The United States signed this treaty on January 14, 1975, and ratified it on September 15, 1976.
Agreement Governing the Activities of States on the Moon and Other Celestial Bodies, Dec. 18, 1979, 1363 U.N.T.S. 3. It was open for signature on December 18, 1979. The Moon Agreement the Moon Agreement reaffirms and elaborates on many of the provisions in the Outer Space Treaty; however, it is not widely adopted. The Moon Agreement entered into force on July 11, 1984. The United States is not a signatory, nor has it ratified this Agreement.
The United Nations' Committee on the Peaceful Uses of Outer Space provides the following as agreements relevant to international space law:
(1) Treaty Banning Nuclear Weapon Tests in the Atmosphere, in Outer Space and under Water (1963)
(2) Convention Relating to the Distribution of Programme-Carrying Signals Transmitted by Satellite (1974)
(3) Agreement Relating to the International Telecommunications Satellite Organization (1971)
(5) Convention for the Establishment of a European Space Agency (1975)
(6) Agreement of the Arab Corporation for Space Communications (ARABSAT) (1976)
(7) Agreement on Cooperation in the Exploration and Use of Outer Space for Peaceful Purposes (INTERCOSMOS) (1976)
(8) Convention on the International Mobile Satellite Organization (1976)
(9) Convention Establishing the European Telecommunications Satellite Organization (EUTELSAT) (1982)
(10) Convention for te Establishment of a European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) (1983)
(11) International Telecommunication Constitution and Convention (1992)