CONTENTS

1.     Introduction
2. PART I:
3. THE DEVELOPMENT OF THE UNIVERSE
4. 1 The Clandestine Dark Matter Society
5. 2 The Discovery of Dark Matter
6. 3 The Big Questions
7. 4 Almost the Very Beginning: A Very Good Place to Start
8. 5 A Galaxy Is Born
9. PART II:
10. AN ACTIVE SOLAR SYSTEM
11. 6 Meteoroids, Meteors, and Meteorites
12. 7 The Short, Glorious Lives of Comets
13. 8 The Edge of the Solar System
14. 9 Living Dangerously
15. 10 Shock and Awe
16. 11 Extinctions
17. 12 The End of the Dinosaurs
18. 13 Life in the Habitable Zone
19. 14 What Goes Around Comes Around
20. 15 Flinging Comets from the Oort Cloud
21. PART III:
22. DECIPHERING DARK MATTER’S IDENTITY
23. 16 The Matter of the Invisible World
24. 17 How to See in the Dark
25. 18 Socially Connected Dark Matter
26. 19 The Speed of Dark
27. 20 Searching for the Dark Disk
28. 21 Dark Matter and Comet Strikes
29.      Conclusion: Looking Up
30.      Acknowledgments
31.      List of Illustrations
32.      Supplementary Reading
33.      Index
34.      About the Author
35.      Also by Lisa Randall
36.      Credits
37.      Copyright
38.      About the Publisher