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Treaty / accord · 1967 treaty

The Outer Space Treaty

The founding treaty of international space law, opened for signature in 1967. It declares space free for exploration and use by all nations, forbids any state from claiming sovereignty over the Moon or other bodies, bans weapons of mass destruction in orbit, and makes states responsible for their national space activities — governmental or private.

Highlights

  • The constitution of outer space

Across space policy

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.