Includes bibliographical references (pages 377-396) and index.

Part I. The Development of the Universe. The Clandestine Dark Matter Society ; The Discovery of Dark Matter ; The Big Questions ; Almost the Very Beginning : A Very Good Place to Start ; A Galaxy is Born -- Part II. An Active Solar System. Meteoroids, Meteors, and Meteorites ; The Short, Glorious Lives of Comets ; The Edge of the Solar System ; Living Dangerously ; Shock and Awe ; Extinctions ; The End of the Dinosaurs ; Life in the Habitable Zone ; What Goes Around Comes Around ; Flinging Comets from the Oort Cloud -- Part III. Deciphering Dark Matter's Identity. The Matter of the Invisible World ; How to See in the Dark ; Socially Connected Dark Matter ; The Speed of Dark ; Searching for the Dark Disk ; Dark Matter and Comet Strikes -- Conclusion: Looking Up.

"Sixty-six million years ago, an object the size of a city descended from space to crash into Earth, creating a devastating cataclysm that killed off the dinosaurs, along with three-quarters of the other species on the planet. What was its origin? In Dark Matter and the Dinosaurs, Lisa Randall proposes it was a comet that was dislodged from its orbit as the Solar System passed through a disk of dark matter embedded in the Milky Way. In a sense, it might have been dark matter that killed the dinosaurs. Working through the background and consequences of this proposal, Randall shares with us the latest findings--established and speculative--regarding the nature and role of dark matter and the origin of the Universe, our galaxy, our Solar System, and life, along with the process by which scientists explore new concepts. In Dark Matter and the Dinosaurs, Randall tells a breathtaking story that weaves together the cosmos' history and our own, illuminating the deep relationships that are critical to our world and the astonishing beauty inherent in the most familiar things"--