The Outer Space Treaty, adopted in 1967, is the cornerstone of international space law. It establishes the principles of non-appropriation, freedom of exploration, and peaceful use of outer space.

The principle of peaceful use, enshrined in Article IV of the Outer Space Treaty, prohibits the use of outer space for military purposes or the establishment of military bases, installations, or weapons in orbit around Earth or on celestial bodies.

The Moon Agreement, adopted in 1979, governs the exploration and use of the Moon and other celestial bodies. It emphasizes the peaceful use of these resources and establishes a framework for international cooperation and the prevention of harmful interference.

The principle of non-appropriation, enshrined in Article II of the Outer Space Treaty, prohibits states from claiming sovereignty or ownership over outer space or celestial bodies.

The Rescue Agreement, adopted in 1968, establishes the obligation of states to provide assistance to astronauts in distress and to return space objects to their country of origin.

The Liability Convention, adopted in 1972, establishes the liability of states for damage caused by space objects to other states or their nationals.

The Registration Convention, adopted in 1975, establishes a system for the registration of space objects with the United Nations.

The principle of common heritage of mankind, enshrined in Article I of the Outer Space Treaty, aims to ensure that the benefits of space exploration are shared equitably among all countries, regardless of their level of development.

The Dispute Resolution Convention, adopted in 1998, establishes a framework for the settlement of disputes arising from space activities.

The principle of freedom of exploration, enshrined in Article I of the Outer Space Treaty, grants all states the right to explore and use outer space on an equal basis.

The Nuclear Power Sources Convention, adopted in 1992, establishes safety standards for the use of nuclear power sources in space.

The principle of non-discrimination, enshrined in Article I of the Outer Space Treaty, prohibits discrimination against any state or group of states in the exploration and use of outer space.

The Return Agreement, adopted in 1968, establishes the obligation of states to return astronauts and space objects to Earth safely and promptly.

The principle of prevention of harmful interference, enshrined in Article IX of the Outer Space Treaty, requires states to avoid activities that may cause harmful interference with the activities of other states in outer space.