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Outer Space Treaty Entered into Force 47 Years Ago

Forty-seven years ago today, the "Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer space including the Moon and Other Celestial Bodies," also known as the "Outer Space Treaty" entered into force. This treaty bans any nation's claim of sovereignty over outer space or any celestial bodies and dictates that outer space is free for use and exploration by all nations. It also bars the nations from using celestial bodies for weapons of mass destruction such as nuclear weapons and well as stationing such weapons in outer space. The United Nations Office for Outer Space Affairs (UNOOSA) has more information along with the full text of the treaty in multiple languages, a treaty status page, and a summary of the treaty's contents. The library has the following sources for those researching this treaty and space law in general:


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