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The Outer Space Treaty entered into force on October 10, 1967, after the United
1967 Event

October 10

Outer Space Treaty Takes Effect: Nukes Banned

The Outer Space Treaty entered into force on October 10, 1967, after the United States, Soviet Union, and United Kingdom led negotiations at the United Nations. The treaty prohibits placing nuclear weapons or other weapons of mass destruction in orbit, on the Moon, or on any celestial body. No nation can claim sovereignty over any part of outer space. Military bases, weapons testing, and military maneuvers are banned on celestial bodies. The treaty has been ratified by 114 nations and signed by 23 more. It remains the foundation of international space law, though its enforcement mechanisms are weak. As commercial space companies and national programs eye lunar mining and Mars colonization, the treaty's prohibitions on national appropriation face increasing pressure from economic interests it never anticipated.

October 10, 1967

59 years ago

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What Else Happened on October 10

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