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  • Published: 4 January 2011
  • ISBN: 9781446402214
  • Imprint: Vintage Digital
  • Format: EBook
  • Pages: 304

Cycles of Time

An Extraordinary New View of the Universe

In his first book since the bestselling The Road to Reality, one of our most distinguished scientists offers a radical new theory of the origin, and ultimate end, of the Universe.

* Roger Penrose's groundbreaking and bestselling The Road to Reality provided a comprehensive yet readable guide to our present understanding of the laws that are currently believed to govern our universe. In Cycles of Time, he moves far beyond this to develop a completely new perspective on cosmology, providing a quite unexpected answer to the often-asked question, ‘what came before the Big Bang?’

* The two key ideas underlying this novel proposal are a penetrating analysis the Second Law of thermodynamics — according to which the ‘randomness’ of our world is continually increasing — and a thorough examination of the light-cone geometry of space-time. Penrose is able to combine these two central themes to show how the expected ultimate fate of our accelerating, expanding universe can actually be reinterpreted as the ‘Big Bang’ of a new one.

* On the way, many other basic ingredients are presented, and their roles discussed in detail, though without any complex mathematical formulae (these all being banished to the appendices). Various standard and non-standard cosmological models are presented, as is the fundamental and ubiquitous role of the cosmic microwave background. Also crucial to the discussion are the huge black holes lying in galactic centres, and their eventual disappearance via the mysterious process of Hawking evaporation.

  • Published: 4 January 2011
  • ISBN: 9781446402214
  • Imprint: Vintage Digital
  • Format: EBook
  • Pages: 304

About the author

Roger Penrose

Professor Sir Roger Penrose is Emeritus Rouse Ball Professor of Mathematics at the University of Oxford. He has received a number of prizes and awards, including the 1988 Wolf Prize for physics which he shared with Stephen Hawking for their joint contribution to our understanding of the universe.

Also by Roger Penrose

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Praise for Cycles of Time

As uncondescending in style as his previous books...many pleasures to be had along the way

Sunday Times

Thought-provoking, edifying

Sky At Night Magazine

Cycles of Time can be highly recommended as an example of how cosmologists are now thinking the unthinkable

Literary Review

Destined to be another bestseller

Manjit Kumar, author of Quantum, Guardian

A genuinely new idea about the origins of the universe [...] must be taken seriously


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