Cosmic Time Travel: A Scientific Odyssey Book

Chapter 1	Introduction	1
Chapter 2	Einstein and the Elasticity of Time	13
	Einstein: The Man	18
	The Discovery of Time Dilation	27
	Relativistic Time Travel and the Twin Paradox	33
	Four-dimensional Space-time	35
Chapter 3	Space That Bends and Twists	41
	What Is Space?	41
	The Geometry of Space	43
	Gauss	44
	Bolyai, Lobachevski, and Hyperbolic Geometry	48
	Riemann and Elliptical Geometry	51
	Extension to the Fourth Dimension	55
	Hyperspace Time Travel	58
	Global and Local Curved Space	60
	Other Universes	62
Chapter 4	Taming the Curvature	65
	Zurich	71
	To Prague	72
	Collaboration with Grossman	74
	Other Gravitational Theories	77
	To Berlin	78
	The Final Struggle	80
	Curved Space-time and Matter	82
	The Twin Paradox Resolved	85
Chapter 5	The Nature of Time and Space-time	87
	The "Flow" of Time	90
	Can Time be Reversed?	91
	Thermodynamics and the Arrow of Time	93
	Other Arrows of Time	96
	Universal Time	99
	Time at the Ends of Time	100
	Space and Time	101
Chapter 6	The Discovery of Space-time Tunnels	103
	The Acceptance of General Relativity	103
	The Schwarzschild Solution	109
	The Einstein-Rosen Bridge	117
	Kruskal Coordinates	119
	Details of the Wormhole	120
Chapter 7	Rips in the Fabric of Space: Black Holes	121
	The Invisible Pup	121
	Neutron Stars and Life Cycles	124
	Black Holes	126
	Properties of Black Holes	130
	Geometry of a Schwarzschild Black Hole	135
Chapter 8	Spinning Gateways	141
	The "No Hair" Theorem	143
	Primordial Black Holes	146
	Exploding Black Holes	148
	Details of Kerr Black Holes	154
	In Orbit Around a Kerr Black Hole	156
	A Trip into a Kerr Black Hole	158
	Other Types of Black Holes	161
Chapter 9	Searching For Time Tunnels	165
	Cyg X-1	167
	LMC X-3	173
	A0620-00	178
	SS 433	181
	Galactic Black Holes	184
	Is There a Black Hole in the Center of Our Galaxy?	187
	Why Are There So Few Black Hole Candidates?	188
Chapter 10	Journey into a Black Hole	191
	Journey into a Black Hole	192
	Fundamental Problems	202
	Tidal Forces	205
	Exits and White Holes	208
	Radiation Problems	209
	Causality Problems	210
	Wormholes	213
Chapter 11	Overcoming the Problems	215
	Sagan and Thorne	215
	Working Out the Details	216
	Exotic Matter	219
	Transforming the Wormhole into a Time Machine	222
	Other Methods of Making Time Machines	226
	Tipler's Time Machines	228
	Causality Revisited	231
	Friedman	232
	Building a Traversable Wormhole	233
	Quantum Gravity	235
Chapter 12	Wormholes and Other Universes	239
	Hawking's Wormholes	239
	Controversy	242
	Other Universes	245
	Other Wormholes	251
	Trouble in Wormville	253
	Another Approach to Wormholes and Other Universes	255
Chapter 13	Advanced Civilizations and Time Travel	259
	Evidence for Other Solar Systems	259
	Statistical Evidence for Life	262
	Tipler's Views	266
	Large-Scale Radio Searches	268
	Supercivilizations	270
	Could an Advanced Civilization Build and Maintain a Wormhole?	272
	Networks of Wormholes	273
Chapter 14	Faster Then Light?	275
	Tachyons	276
	Properties of Tachyons	277
	Detecting Tachyons	278
	Do Tachyons Exist?	279
	Other Methods of Obtaining Superluminal Speeds	281
	The Quantum Connection	283
Chapter 15	Epilogue	285
	Glossary	289
	Bibliography	297
	Index	303