Space law, as one of the branches of international law, has unique and special characteristics. The effect of these features is such that space law can be viewed as an isolated regime that has not been able to adapt itself to general international law. Creating a special rule for attribution, instances of humanization of space law incorporated in the provisions of the space law treaties and the lacunae left by the space law instruments on designing dispute settlement mechanism are regarded as some examples reflecting the distinct feature of space law system. This paper aims at answering to this main question that considering the distinct features of space law on the one side and lex specialis rules set forth in the five space law treaties on the other side, how and to what extent space law can be considered as a stronger form of lex specialis, i.e., self-contained regime.