In Space, No‐One Can Hear the Screams of Paternalism: A Response to Häyry's Immorality of Space Exploration

Matti Häyry has argued that space exploration aimed at human settlement is both irrational and morally impermissible. Such projects, he claims, expose others-including future generations-to serious risks that were not autonomously chosen and which may be harsh, oppressive, and difficult or impossible to escape. Given the increasing institutional interest in extra-planetary habitation, these concerns warrant serious engagement. This paper refutes Häyry's use of the precautionary principle as a decisive moral rule in this context because the principle is ill-suited to long-term, future-directed activities in that it treats abstention as ethically neutral. The moral failure of human settlement in space, if there is one, lies not in space exploration qua activity-but in mission frameworks that exclude normative, social, and philosophical perspectives from their design and governance.