States’ activity in outer space is a highly science-driven and technologically complex area. This fact determines necessity of close cooperation between states on different levels with the view of outer space exploration in the interest of humanity. The international legal governance of certain aspects of outer space activity, however, is still underdeveloped, i.a., due to the ponderosity of the treaty process and reluctance of states to engage in constructive dialogue. That said, “soft law” in the form of the United Nations General Assembly resolutions and the national legislation of states become more prominent in the area of outer space activities. Role of the national legislation in this area is hard to overestimate. Major part of the crucial aspects of the outer space activity have found their place solely in the national legislation, filling the existing lacunas and influencing formation of international space law.