Part I. The Early Extraterrestrial Life Debate.- Chapter 1. The Extraterrestrial Life Debate from Antiquity to 1900.- Chapter 2. Early Modern ET, Reflexive Telescopics, and Their Relevance Today.- Chapter 3. Extraterrestrial Life as the Great Analogy, Two Centuries Ago and in Modern Astrobiology.- Chapter 4. Hegel, Analogy, and Extraterrestrial Life.- Chapter 5. The Relationship Between the Origins of Life on Earth and the Possibility of Life on...