Finally, we come to a question we teed up way back in the introduction—war. Is war less likely in space? If not, is it apt to be especially dangerous? If we apply the standard analysis of war theorists rather than trying to reason from pop theories of why wars start, we find that, as in so many areas of human behavior in space, we should expect humans to behave as we do on Earth. If space wars are apt to be especially dangerous, that’s a problem.