The articulations of science and politics in the Cold War in the United States are well studied in histories of American political culture. However, these histories are often given focus and coherence via concepts and understandings taken from political realism and sociological institutionalism, thereby underestimating the transformations in the very idea of political reality that helped form the Cold War era in the United States. This paper launches an investigation of the relationship between speculative fiction and scientific and political discourse during that era to explore how the political culture of the United States came to be structured not only by a certain imagination but also by a particular set of fantasies. Building on the history of war-gaming at the RAND Corporation, the author conducts a close reading of a RAND Corporation report turned popular science publication. This suggests that, during the Cold War, a new standpoint from which to view the political world – the view from outer space – began to organize how the American political project for the globe represented its own modernity to itself. This view, drawn from science fiction but made real in its ethos and its political consequences, projected an understanding of “mankind” as but an infant in the early stages of what would become its interstellar destiny. A baleful consequence of this view was its tendency to free political actors and intellectuals from the urgent problem, identified acutely by Hannah Arendt in her essay “Man’s Conquest of Space,” of creating a world in common on earth.