This final episode examines how private space companies are turning science fiction dreams of space colonization into concrete plans. We analyze the technical challenges of establishing permanent settlements on Mars, comparing current proposals with classic sci-fi depictions. The discussion covers breakthrough technologies in life support systems, radiation protection, and in-situ resource utilization, while exploring the psychological and physiological challenges of long-term space habitation. The episode concludes with an assessment of various space colonization timelines and their feasibility, including detailed analysis of current space habitat designs and technologies.