Imagine if The Hitchhiker's Guide to the Galaxy were a real handbook . . .Internationally renowned physicist and bestselling author Christophe Galfard takes us on a wonder-filled journey through the past, present and future of the universe - all from the comfort of a sofa.The Universe in Your Hand explores some of the most profound and amazing ideas of our times - Quantum Mechanics, General Relativity, Time Travel, Parallel Realities and Multiple Universes - with the promise that you'll only need one equation: the fabled E=mc2. Christophe Galfard, who studied black holes and the origins of our universe as Stephen Hawking's research graduate student, tells a narrative story of the power of our incredible universe to transport us to the surface of our dying Sun, put us into the deathly grip of a black hole and shrink us to sub-atomic size in order to probe the minute world of particles and quantum forces.Written from the cutting edge of today's knowledge, The Universe in Your Hand allows readers to really understand the mind-bending mysteries that underpin modern science, and, along the way, questions our place within the universe and the beginnings of time. The Universe in Your Hand is the perfect primer for anyone curious about our extraordinary universe. 'A well-written and thoroughly approachable journey through what we know of modern astronomy and physics. Part personal conversation, part travelogue and part science primer for the non-scientist, The Universe in Your Hand is a delightful and highly educational read' Jim Bell, author of The Interstellar Age and Postcards from Mars 'A wild tour through the reaches of time and space, from the interior of a proton to the Big Bang to the rough suburbs of a black hole. It's friendly, excitable, erudite and cosmic' Jordan Ellenberg, New York Times bestselling author of How Not to Be Wrong