Physicist Brian Green explains how modern science has lead to a new and deeper understanding of the universe that may reconcile the behavior of everything from the smallest particle to the largest black hole.

Part IReality's Arena -- 1. Roads to Reality: Space, Time, and Why Things Are as They Are 3 -- 2. Universe and the Bucket: Is Space a Human Abstraction or a Physical Entity? 23 -- 3. Relativity and the Absolute: Is Spacetime an Einsteinian Abstraction or a Physical Entity? 39 -- 4. Entangling Space: What Does It Mean to Be Separate in a Quantum Universe? 77 -- Part II Time and Experience -- 5. Frozen River: Does Time Flow? 127 -- 6. Chance and the Arrow: Does Time Have a Direction? 143 -- 7. Time and the Quantum: Insights into Time's Nature from the Quantum Realm 177 -- Part III Spacetime and Cosmology -- 8. Of Snowflakes and Spacetime: Symmetry and the Evolution of the Cosmos 219 -- 9. Vaporizing the Vacuum: Heat, Nothingness, and Unification 251 -- 10. Deconstructing the Bang: What Banged? 272 -- 11. Quanta in the Sky with Diamonds: Inflation, Quantum Jitters, and the Arrow of Time 304 -- Part IV Origins and Unification -- 12. World on a String: The Fabric According to String Theory 327 -- 13. Universe on a Brane: Speculations on Space and Time in M-Theory 376 -- Part V Reality and Imagination -- 14. Up in the Heavens and Down in the Earth: Experimenting with Space and Time 415 -- 15. Teleporters and Time Machines: Traveling Through Space and Time 437 -- 16. Future of an Allusion: Prospects for Space and Time 470.