In the last three decades since, in 1957, the first Sputnik circled the earth, a significant number of legal rules to govern space applications have been adopted.
In the field of primarily civil space activities, agreements were reached on the following instruments.
(1) The Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and other Celestial Bodies, of 1967.
(2) The Agreement on the Rescue of Astronauts, the Return of Astronauts and the Return of Objects Launched into Outer Space, of 1968.
(3) The Convention on International Liability to Damage Caused by Space Objects, of 1972.
(4) The Convention on Registration of Objects Launched into Outer Space, of 1974.
(5) The Agreement Governing the Activities of States on the Moon and other Celestial Bodies, of 1979.
On top of these instruments, the UN adopted two sets of Principles, the 1982 Principles Governing Direct Television Broadcasting and the 1986 Principles Relating to Remote Sensing.