In this lecture I intend to talk about two treaties adopted under the auspices of the General Assembly of the United Nations. To give them their full titles, they are the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space including the Moon and other Celestial Bodies and the Agreement on the Rescue of Astronauts, the Return of Astronauts and the Return of Objects Launched into Outer Space. For convenience, I shall call them the Treaty on Outer Space and the Agreement on Rescue and Return.