The Nature of Space and Time (Google eBook)Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein’s general theory of relativity, the two most accurate and successful theories in all of physics, be united into a single quantum theory of gravity? Can quantum and cosmos ever be combined? In The Nature of Space and Time, two of the world’s most famous physicists—Stephen Hawking (A Brief History of Time) and Roger Penrose (The Road to Reality)—debate these questions. The authors outline how their positions have further diverged on a number of key issues, including the spatial geometry of the universe, inflationary versus cyclic theories of the cosmos, and the blackhole informationloss paradox. Though much progress has been made, Hawking and Penrose stress that physicists still have further to go in their quest for a quantum theory of gravity. 
What people are saying  Write a review
User ratings
5 stars 
 
4 stars 
 
3 stars 
 
2 stars 
 
1 star 

Review: The Nature of Space and Time
User Review  Peter  GoodreadsAs I suspected I got less than half of it. But the interplay between Hawking and Penrose playing of each other is amazing. Read full review
Review: The Nature of Space and Time
User Review  GoodreadsAs I suspected I got less than half of it. But the interplay between Hawking and Penrose playing of each other is amazing. Read full review
Contents
Classical Theory  3 
Structure of Spacetime Singularities  27 
Quantum Black Holes  37 
Quantum Theory and Spacetime  61 
Quantum Cosmology  75 
The Twistor View of Spacetime  105 
The Debate  121 
The Debate Continues  139 
143  