Chapter 18 Is There Intelligent Life Elsewhere in the Universe?

Figure 18.1 Arrow of Time

Figure 18.2 Miller-Urey Experiment

Figure 18.3 Chemical Evolution

Figure 18.4 Interstellar Globules

Figure 18.5 Murchison Meteorite

Figure 18.6 Hydrothermal Vents

Figure 18.7 Drake Equation

Figure 18.8 Stellar Habitable Zones

Figure 18.9 Galactic Habitable Zone

Figure 18.10 Binary-Star Planets

Figure 18.11 Pioneer 10 Plaque

Figure 18.12 Earth’s Radio Leakage

Figure 18.13 Water Hole

Figure 18.14 Project Phoenix