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A Briefer History of Time is a simplified edition of Stephen Hawking’s timeless classic A Brief History of Time by Stephen Hawking and Leonard Mlodinow. Summary of the Book This book presents a simplified version of Stephen Hawking’s earlier work. It has been updated with content on quantum mechanics, string theory, the big bang theory, and other topics. The book is illustrated and helps readers understand Hawking’s earlier theories with ease. It also covers the latest updates on the subjects and brings greater detail in a very accessible format. About the Authors Stephen Hawking is an English theoretical physicist, cosmologist and the Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. He is best recognized in the scientific community for his collaborative works with Roger Penrose on gravitational singularity theorems in the framework of general relativity, and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Best known for his A Brief History of Time, Black Holes and Baby Universes and Other Essays, On The Shoulders of Giants and The Grand Design, Hawking has a motor neuron disease related to Amyotrophic Lateral Sclerosis (ALS). He is almost completely paralysed and uses a speech generating device to communicate. Leonard Mlodinow is an American physicist and writer. He is best known in scientific circles for co-developing a new type of perturbation theory for eigenvalue problems in quantum mechanics and for his work on the quantum theory of dielectric media with M. Hillery. He has also written The Drunkard's Walk: How Randomness Rules Our Lives and Euclid's Window: The Story of Geometry from Parallel Lines to Hyperspace. He is the recipient of the PEN/E. O. Wilson Literary Science Writing Award.