The Nature of Space and TimeEinstein 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  Jan  GoodreadsI listen to half of this and gave up. Way over my head, especially for vacation. Read full review
Review: The Nature of Space and Time
User Review  Artemis Fowl  GoodreadsWe can understand the cosmos ? Will we ever find a general pattern by which explain what surrounds us ? Relativity and modern quantum theory will never get to a unification ? Think about the cosmos in ... 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  