• Preface / ix
  • Introduction: The Future Begins Now / 1
  • 1 A World of Abundance / 4
  • Part I: Thresholds / 11
  • 2 Personal Thresholds / 13
  • 3 The Lessons of History / 22
  • Geographic Thresholds / 23
  • Technological Thresholds / 28
  • Thresholds of Challenge / 35
  • Thresholds and Change / 41
  • 4 Risk: The Surly Bonds of Earth / 44
  • Part II: Envisioning the Future / 48
  • 5 Visions for the 21st Century / 50
  • 6 New Challenges / 59
  • 7 New Ideas / 67
  • 8 The Promise of Space / 80
  • Part III: The Way to the Future / 84
  • 9 The Means, Part I: Getting to Space / 85
  • The Limitations of Rockets / 86
  • New Ideas for Reaching Space / 88
  • Leaving Earth Orbit / 97
  • 10 The Means, Part II: Living in Space / 103
  • 11 The Means, Part III: Co-opetition / 113
  • 12 Convergence / 122
  • Part IV: Creating the Future Now / 126
  • 13 Leadership in Space / 128
  • 14 Space Commerce / 133
  • 15 Resources from Space / 141
  • 16 Manufacturing in Space / 145
  • 17 Power from Space / 152
  • 18 Technology to Reach Space / 156
  • 19 International Agreements / 159
  • Part V: Roles for All / 163
  • 20 Government Roles: Vision and Policies / 165
  • 21 Education and Academia: Discovery / 169
  • Learning / 170
  • Inspiring / 172
  • Discovering / 175
  • 22 Private Enterprise: Developing Products and Providing
  • Services / 177
  • 23 Your Role: Creativity and Action / 183
  • Conclusion: A New Beginning / 188
  • 24 A New Age of Discovery / 190
  • 25 Crossing the Threshold / 195
  • References and End Notes / 198
  • Index / 257