Contents — Life Beyond the Earth

• Introduction
• Life Zones and Suitable Stars for E.T.
  1. Suitable Stars
  • Habitable Planets in Binary/Multiple Star Systems
  • Alpha Centauri System
• Life Characteristics
  1. Evolution by Natural Selection
  2. Working Definition of Life
  3. Extremophiles
• Habitable Planets
• Methane-based Life
• Bio-Markers
• Drake Equation: How Many Of Them Are Out There?
• “Hailing Frequencies Open, Captain”
• Fermi's Question (Fermi's Paradox)
• Answers to Fermi's Question: Resolutions of Fermi's Paradox
• Review Questions
• References and Web Links

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