| Acknowledgements | vii |
| Introduction: Why Time Travel is Possible | ix |
| Chapter 1 | Ancient History | 1 |
| Let Newton be! | |
| On ye shoulders of Giants | |
| Three laws and a theory of gravity | |
| The test of time | |
| Across the Solar System | |
| Black hole pioneers | |
| Waves and particles: towards twentieth-century science | |
| Chapter 2 | Warping Space and Time | 32 |
| From Euclid to Descartes | |
| Beyond Euclid | |
| Geometry comes of age | |
| The geometry of relativity | |
| Einstein's gravitational insight | |
| The relativity of geometry | |
| Schwarzschild's singular solution | |
| Chapter 3 | Dense Stars | 64 |
| Dwarfish companions | |
| Degenerate stars | |
| The white dwarf limit | |
| The ultimate density of matter | |
| Inside the neutron star | |
| Beyond the neutron star | |
| Puzzling pulsars | |
| Zwicky was right: neutron stars revealed | |
| Chapter 4 | Black Holes Abound | 100 |
| Red shifts and relativity | |
| Radio galaxies | |
| Quasars | |
| Cosmic powerhouses | |
| X-ray stars | |
| Celestial powerhouses | |
| The prime candidate | |
| A profusion of possibilities | |
| Chapter 5 | Darkness at the Edge of Time | 125 |
| New maps of space and time | |
| Black holes in a spin | |
| Singularities rule | |
| Defeating the cosmic censor | |
| Black holes are cool | |
| Exploding horizons | |
| Centrifugal confusion | |
| A one-way time machine | |
| Chapter 6 | Hyperspace Connections | 162 |
| The Einstein connection | |
| Charging through hyperspace | |
| Bridging the universes | |
| The blue-shift block | |
| Parting the blue sheet | |
| Journey into hyperspace | |
| Wormhole engineering | |
| Making antigravity | |
| The string-driven spaceship: a practicable proposition? | |
| Chapter 7 | Two Ways to Build a Time Machine | 198 |
| Paradoxes and possibilities | |
| Time loops, and other twists | |
| Tachyonic time travellers | |
| Godel's universe | |
| Tipler's time machine | |
| Wormholes and time travel | |
| Paradoctoring the paradoxes | |
| Chapter 8 | Cosmic Connections | 230 |
| Blowing bubbles | |
| Einstein's vanishing constant | |
| An oscillating universe? | |
| The black hole bounce | |
| Glossary | 246 |
| Bibliography | 254 |
| Index | 259 |
Format: Paperback, 272 pages
