Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies (Outer Space Treaty)

The Outer Space Treaty, signed in 1967, is an international agreement that sets guidelines for how countries should explore and use outer space. It emphasizes that space should be used for peaceful purposes, prohibits any nation from claiming sovereignty over outer space or celestial bodies, and prohibits the placement of nuclear weapons in space. The treaty encourages international cooperation in space exploration and emphasizes that activities in space must respect the interests of all countries, promoting the idea that space is the "province of all mankind."