Skip to Main Content (Press Enter)
Judgment Day by Terry Pratchett, Ian Stewart and Jack Cohen
Add Judgment Day to bookshelf
Add to Bookshelf

Look Inside

Judgment Day

Science of Discworld IV: A Novel

Science of Discworld IV: A Novel

Science of Discworld IV: A Novel

By Terry Pratchett, Ian Stewart and Jack Cohen

By Terry Pratchett, Ian Stewart and Jack Cohen

By Terry Pratchett

By Terry Pratchett

By Terry Pratchett, Ian Stewart and Jack Cohen
Read by Michael Fenton Stevens and Stephen Briggs

By Terry Pratchett, Ian Stewart and Jack Cohen
Read by Michael Fenton Stevens and Stephen Briggs

Best Seller

Part of Science of Discworld Series

Part of Science of Discworld Series

Part of Science of Discworld Series

Paperback $19.00

Dec 22, 2015 | ISBN 9780804169004

Ebook $12.99

Jan 26, 2016 | ISBN 9780804172257

Audiobook Download $22.50

Dec 22, 2015 | 738 Minutes

All Formats
+
    Judgment Day by Terry Pratchett, Ian Stewart and Jack Cohen
    Paperback $19.00
    Dec 22, 2015 | ISBN 9780804169004

    Buy from Other Retailers:

    See All Formats (2) +
    • $19.00

      Dec 22, 2015 | ISBN 9780804169004

      Buy from Other Retailers:

    • Jan 26, 2016 | ISBN 9780804172257

      Buy from Other Retailers:

    • Dec 22, 2015 | ISBN 9780553397994

      738 Minutes

      Buy from Other Retailers:

    Buy the Audiobook Download:

    About Judgment Day

    The wizards of Unseen University are again called upon to defend their creation, Roundworld, this time in a courtroom—where its very existence hangs in the balance.
     
    The Omnians fervently believe that the world is round, not flat, and view the discovery of Roundworld as a vindication of their faith. To leave this artifact in the hands of the wizards would be unacceptable. Not only do the academics hold that Discworld is flat, but by creating the Roundworld universe, they have elevated themselves to the level of gods. Ankh-Morpork’s venerable tyrant Lord Vetinari agrees to a tribunal, where the wizards Ridcully, Rincewind, and Ponder Stibbons can present their case—with key assistance from a Roundworld librarian named Marjorie Daw.
     
    JUDGMENT DAY weaves together explorations of such Earthly topics as big science, creation, subatomic particles, the existence of dark matter, and the psychology of belief–a treat for Discworld fans and readers of popular science alike.

    About Judgment Day

    The wizards of Unseen University are again called upon to defend their creation, Roundworld, this time in a courtroom—where its very existence hangs in the balance.
     
    The Omnians fervently believe that the world is round, not flat, and view the discovery of Roundworld as a vindication of their faith. To leave this artifact in the hands of the wizards would be unacceptable. Not only do the academics hold that Discworld is flat, but by creating the Roundworld universe, they have elevated themselves to the level of gods. Ankh-Morpork’s venerable tyrant Lord Vetinari agrees to a tribunal, where the wizards Ridcully, Rincewind, and Ponder Stibbons can present their case—with key assistance from a Roundworld librarian named Marjorie Daw.
     
    JUDGMENT DAY weaves together explorations of such Earthly topics as big science, creation, subatomic particles, the existence of dark matter, and the psychology of belief–a treat for Discworld fans and readers of popular science alike.

    About Judgment Day

    The fourth book in the Science of Discworld series, and this time around dealing with THE REALLY BIG QUESTIONS, Terry Pratchett’s brilliant new Discworld story Judgement Day is annotated with very big footnotes (the interleaving chapters) by mathematician Ian Stewart and biologist Jack Cohen, to bring you a mind-mangling combination of fiction, cutting-edge science and philosophy.

    Marjorie Dawe is a librarian, and takes her job — and indeed the truth of words — very seriously. She doesn’t know it, but her world and ours — Roundworld — is in big trouble. On Discworld, a colossal row is brewing. The Wizards of the Unseen University feel responsible for Roundworld (as one would for a pet gerbil). After all, they brought it into existence by bungling an experiment in Quantum ThaumoDynamics. But legal action is being brought against them by Omnians, who say that the Wizards’ god-like actions make a mockery of their noble religion. As the finest legal brains in Discworld (a zombie and a priest) gird their loins to do battle — and when the Great Big Thing in the High Energy Magic Laboratory is switched on — Marjorie Dawe finds herself thrown across the multiverse and right in the middle of the whole explosive affair.

    As God, the Universe and, frankly, Everything Else is investigated by the trio, you can expect world-bearing elephants, quantum gravity in the Escher-verse, evolutionary design, eternal inflation, dark matter, disbelief systems — and an in-depth study of how to invent a better mousetrap.

    Listen to a sample from Judgment Day

    Also by Terry Pratchett

    A Blink of the Screen
    The World of Poo
    A Slip of the Keyboard
    Dragons at Crumbling Castle
    Raising Steam
    See all books by Terry Pratchett

    Also by Terry Pratchett

    A Blink of the Screen
    The World of Poo
    A Slip of the Keyboard
    Dragons at Crumbling Castle
    Raising Steam
    See all books by Terry Pratchett

    Also by Terry Pratchett

    A Blink of the Screen
    The World of Poo
    A Slip of the Keyboard
    Dragons at Crumbling Castle
    Raising Steam
    See all books by Terry Pratchett

    About Terry Pratchett

    TERRY PRATCHETT is the acclaimed creator of the globally bestselling Discworld series, the first of which, The Color of Magic, was… More about Terry Pratchett

    About Ian Stewart

    Ian Stewart is Professor of Mathematics at the University of Warwick and won the Royal Society’s 1995 Michael Faraday Medal… More about Ian Stewart

    About Jack Cohen

    Jack Cohen is a biologist and science writer and long-time collaborator of Ian Stewart’s.

    About Terry Pratchett

    TERRY PRATCHETT is the acclaimed creator of the globally bestselling Discworld series, the first of which, The Color of Magic, was published in 1983. In all, he is the author of more than seventy books. His novels have been widely adapted… More about Terry Pratchett

    About Terry Pratchett

    TERRY PRATCHETT is the acclaimed creator of the globally bestselling Discworld series, the first of which, The Color of Magic, was… More about Terry Pratchett

    About Ian Stewart

    Ian Stewart is Professor of Mathematics at the University of Warwick and won the Royal Society’s 1995 Michael Faraday Medal… More about Ian Stewart

    About Jack Cohen

    Jack Cohen is a biologist and science writer and long-time collaborator of Ian Stewart’s.

    Product Details

    Category: Fantasy | Science Fiction

    Paperback | $19.00
    Published by Anchor
    Dec 22, 2015 | 368 Pages | 5-3/16 x 8 | ISBN 9780804169004

    Category: Fantasy | Science Fiction

    Ebook | $12.99
    Published by Anchor
    Jan 26, 2016 | 336 Pages | ISBN 9780804172257

    Category: Fantasy | Science Fiction | Audiobooks

    Audiobook Download | $22.50
    Published by Random House Audio
    Dec 22, 2015 | 738 Minutes | ISBN 9780553397994

    YOU MAY ALSO LIKE

    Praise

    “Stewart, Cohen and Pratchett set out to puzzle us and make us think differently…. This is exhilarating.” –A. S. Byatt, New Statesman

    “Fascinating and entertaining. . . . It’s baffling why this appealingly distinctive offshoot of the wildly popular Discworld yarns took so long to cross the Atlantic.” —Kirkus Reviews

    Looking for More Great Reads?
    21 Books You’ve Been Meaning to Read

    Visit other sites in the Penguin Random House Network

    Raise kids who love to read

    Brightly

    Raise kids who love to read

    Today's Top Books

    Today's Top Books

    Want to know what people are actually reading right now?

         An online magazine for today’s home cook

    TASTE

    An online magazine for today’s home cook