Which treaty states that space shall be used exclusively for peaceful purposes?

The correct answer is the 1967 Outer Space Treaty, as this foundational international agreement explicitly sets forth the principle that space shall be used exclusively for peaceful purposes. The treaty, formally known as the "Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies," establishes a framework for the use of outer space and emphasizes that nations should refrain from placing nuclear weapons or other weapons of mass destruction in space, and that the exploration of space should be conducted for the benefit of all humankind.

This treaty laid the groundwork for international cooperation in space activities and has been ratified by over 100 countries, highlighting its significance in promoting peaceful uses of outer space and preventing conflicts that could arise from military activities in this domain. The emphasis on peace in its provisions reflects the collective intention of the global community to ensure that space remains a domain free from warfare and hostile actions.

The other treaties mentioned in the options do not focus on the peaceful use of space. The 1979 Moon Treaty, while also addressing the Moon and other celestial bodies, has not gained widespread acceptance and primarily focuses on the ownership and use of lunar resources rather than the overarching principle of peaceful use of all space. The