The Soviet Union ratifies the Outer Space Treaty. The treaty bans the placement of nuclear weapons or other weapons of mass destruction in orbit around the Earth, on the Moon, or in outer space, and limits the Moon and other celestial bodies to peaceful purposes. The treaty entered into force on October 10, 1967. As of March 2024, 115 countries are parties to the treaty, while another 22 have signed the treaty but have not completed ratification. More
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