The Outer Space treaty, formally the Treaty on Principles Governing the Activities of State in the Exploration and Use of Outer space, including the moon and other Celestial bodies, is a treaty that dictates international space law. The main objective of this treaty is to prevent nations placing nuclear or conventional weapons in orbit of earth, on the moon or on any other celestial body. Similarly, the treaty prohibits the establishment of military bases, fortifications or conducting military manoeuvres in these areas. The treaty was seen as one of the first steps in preventing the proliferation of weapons in space, encouraging more peaceful exploration of space instead.