Who of human or robot has its place in space? The robot, because it can replace human beings for exploration missions that are always particularly dangerous both for the health and the safety of astronauts. But human also tends to gain a place in space, when he can be assisted by the robot as a tool that facilitates his work, or when the machine can serve as a medium to extend humanity to the confines of the universe. All these hypotheses raise ethical and legal questions to which the article gives some solutions.