On this day in space! Oct. 10, 1967: The Outer Space Treaty is ratified to lay out how countries can use outer space
The international Outer Space Treaty was officially ratified on October 10, 1967, establishing foundational rules for how nations explore and use space. More than 100 countries have ratified the agreement, which declares that space exploration must benefit all humankind.
The international Outer Space Treaty was officially ratified on October 10, 1967, establishing foundational rules for how nations explore and use space. More than 100 countries have ratified the agreement, which declares that space exploration must benefit all humankind. The pact strictly bans nations from claiming territory on the moon or other celestial bodies.
It also prohibits placing nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies. Additionally, signatories agreed to restrict the moon and other bodies exclusively to peaceful purposes, banning military bases, weapon testing, and maneuvers. Considered the cornerstone of modern space law, the agreement provides enforceable rules for contemporary spaceflight activities.
Beyond weapons and military limits, the treaty addresses spacecraft ownership, establishes restrictions on off-Earth property rights, and requires member nations to assist astronauts in distress during space missions or emergency landings.
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Original publication: 10 October 2026 17:13
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