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Chapter 18 Is There Intelligent Life Elsewhere in the Universe?
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Figure 18.1 Arrow of Time
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Figure 18.2 Miller-Urey Experiment
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Figure 18.3 Chemical Evolution
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Figure 18.4 Interstellar Globules
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Figure 18.5 Murchison Meteorite
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Figure 18.6 Hydrothermal Vents
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Figure 18.7 Drake Equation
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Figure 18.8 Stellar Habitable Zones
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Figure 18.9 Galactic Habitable Zone
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Figure 18.10 Binary-Star Planets
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Figure Pioneer 10 Plaque
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Figure 18.12 Earth’s Radio Leakage
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Figure Water Hole
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Figure 18.14 Project Phoenix
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