He is known for both his breakthroughs in theoretical physics as well as his ability to make complex concepts accessible for all, and was beloved for his mischievous sense of humor. At the time of his death, Hawking was working on a final project: a book compiling his answers to the "big" questions that he was so often posed--questions that ranged beyond his academic field. Within these pages, he provides his personal views on our biggest challenges as a human race, and where we, as a planet, are heading next. Each section will be introduced by a leading thinker offering his or her own insight into Professor Hawking's contribution to our understanding.

    Breaking down the symbols themselves, they pose a series of questions: What is energy? What is mass? What has the speed of light got to do with energy and mass? In answering these questions, they take us to the site of one of the largest scientific experiments ever conducted. Lying beneath the city of Geneva, straddling the Franco-Swiss boarder, is a 27 km particle accelerator, known as the Large Hadron Collider. Using this gigantic machine—which can recreate conditions in the early Universe fractions of a second after the Big Bang—Cox and Forshaw will describe the current theory behind the origin of mass.Alongside questions of energy and mass, they will consider the third, and perhaps, most intriguing element of the equation: 'c' - or the speed of light. Why is it that the speed of light is the exchange rate? Answering this question is at the heart of the investigation as the authors demonstrate how, in order to truly understand why E=mc2, we first must understand why we must move forward in time and not backwards and how objects in our 3-dimensional world actually move in 4-dimensional space-time. In other words, how the very fabric of our world is constructed. A collaboration between two of the youngest professors in the UK, Why Does E=mc2? promises to be one of the most exciting and accessible explanations of the theory of relativity in recent years.

    Our Big Bang, our distant future, parallel worlds, the sub-atomic and intergalactic - none of them are what they seem. But there is a way to understand this immense strangeness - mathematics. Seeking an answer to the fundamental puzzle of why our universe seems so mathematical, Tegmark proposes a radical idea: that our physical world not only is described by mathematics, but that it is mathematics. This may offer answers to our deepest questions: How large is reality? What is everything made of? Why is our universe the way it is?Table of ContentsPreface 1 What Is Reality? Not What It Seems • What’s the Ultimate Question? • The Journey Begins Part One: Zooming Out 2 Our Place in Space Cosmic Questions • How Big Is Space? • The Size of Earth • Distance to the Moon • Distance to the Sun and the Planets • Distance to the Stars • Distance to the Galaxies • What Is Space? 3 Our Place in TimeWhere Did Our Solar System Come From? • Where Did theGalaxies Come From? • Where Did the Mysterious MicrowavesCome From? • Where Did the Atoms Come From? 4 Our Universe by NumbersWanted: Precision Cosmology • Precision Microwave-Background Fluctuations • Precision Galaxy Clustering • The Ultimate Map of Our Universe • Where Did Our Big Bang Come From? 5 Our Cosmic Origins What’s Wrong with Our Big Bang? • How Inflation Works • The Gift That Keeps on Giving • Eternal Inflation 6 Welcome to the Multiverse The Level I Multiverse • The Level II Multiverse • Multiverse Halftime Roundup Part Two: Zooming In 7 Cosmic Legos Atomic Legos • Nuclear Legos • Particle-Physics Legos • Mathematical Legos • Photon Legos • Above the Law? • Quanta and Rainbows • Making Waves • Quantum Weirdness • The Collapse of Consensus • The Weirdness Can’t Be Confined • Quantum Confusion 8 The Level III Multiverse The Level III Multiverse • The Illusion of Randomness • Quantum Censorship • The Joys of Getting Scooped • Why Your Brain Isn’t a Quantum Computer • Subject, Object and Environment • Quantum Suicide • Quantum Immortality? • Multiverses Unified • Shifting Views: Many Worlds or Many Words? Part Three: Stepping Back 9 Internal Reality, External Reality and Consensus Reality External Reality and Internal Reality • The Truth, the Whole Truth and Nothing but the Truth • Consensus Reality • Physics: Linking External to Consensus Reality 10 Physical Reality and Mathematical Reality Math, Math Everywhere! • The Mathematical Universe Hypothesis • What Is a Mathematical Structure? 11 Is Time an Illusion? How Can Physical Reality Be Mathematical? • What Are You? • Where Are You? (And What Do You Perceive?) • When Are You? 12 The Level IV Multiverse Why I Believe in the Level IV Multiverse • Exploring the Level IV Multiverse: What’s Out There? • Implications of the Level IV Multiverse • Are We Living in a Simulation? • Relation Between the MUH, the Level IV Multiverse and Other Hypotheses •Testing the Level IV Multiverse 13 Life, Our Universe and Everything How Big Is Our Physical Reality? • The Future of Physics • The Future of Our Universe—How Will It End? • The Future of Life •The Future of You—Are You Insignificant? Acknowledgments Suggestions for Further Reading Index

    These homeless dogs, plucked from the streets of Moscow, were selected because they fitted the program's criteria: weighing no more than 15 pounds, measuring no more than 14 inches in length, robust, photogenic and with a calm temperament. These characteristics enabled the dogs to withstand the extensive training that was needed to prepare them for suborbital, then for orbital, space fights. On 3 November 1957, the dog Laika was the first Earth-born creature to enter space, making her instantly famous around the world. She did not return. Her death, a few hours after launching, transformed her into a legendary symbol of sacrifice. Two further strays, Belka and Strelka, were the first beings to make it back from space, and were swiftly immortalized in children's books and cartoons. Images of the Space Dogs proliferated, reproduced on everyday goods across the Soviet Union: cigarette packets, tins of sweets, badges, stamps and postcards all bore their likenesses. "Soviet Space Dogs" uses these unique items to illustrate the story (in fact and fiction) of how they became fairytale idols. The first book to document these items, it contains more than 350 images, almost all of which are previously unpublished, and many of which have never been seen before outside Russia. The rich and varied ephemera (from cigarette packets to sweet wrappers and children's toys) of Soviet graphics will have immense appeal to the art and design market, as well as appealing to dog-lovers everywhere.

    The result is the most authoritative and scientifically accurate description of the revolutionary developments taking place in medicine, computers, artificial intelligence, nanotechnology, energy production, and astronautics.In all likelihood, by 2100 we will control computers via tiny brain sensors and, like magicians, move objects around with the power of our minds. Artificial intelligence will be dispersed throughout the environment, and Internet-enabled contact lenses will allow us to access the world's information base or conjure up any image we desire in the blink of an eye.Meanwhile, cars will drive themselves using GPS, and if room-temperature superconductors are discovered, vehicles will effortlessly fly on a cushion of air, coasting on powerful magnetic fields and ushering in the age of magnetism.Using molecular medicine, scientists will be able to grow almost every organ of the body and cure genetic diseases. Millions of tiny DNA sensors and nanoparticles patrolling our blood cells will silently scan our bodies for the first sign of illness, while rapid advances in genetic research will enable us to slow down or maybe even reverse the aging process, allowing human life spans to increase dramatically.In space, radically new ships—needle-sized vessels using laser propulsion—could replace the expensive chemical rockets of today and perhaps visit nearby stars. Advances in nanotechnology may lead to the fabled space elevator, which would propel humans hundreds of miles above the earth's atmosphere at the push of a button.But these astonishing revelations are only the tip of the iceberg. Kaku also discusses emotional robots, antimatter rockets, X-ray vision, and the ability to create new life-forms, and he considers the development of the world economy. He addresses the key questions: Who are the winner and losers of the future? Who will have jobs, and which nations will prosper?All the while, Kaku illuminates the rigorous scientific principles, examining the rate at which certain technologies are likely to mature, how far they can advance, and what their ultimate limitations and hazards are. Synthesizing a vast amount of information to construct an exciting look at the years leading up to 2100, Physics of the Future is a thrilling, wondrous ride through the next 100 years of breathtaking scientific revolution. (From the Hardcover Edition)(Duration: 15:39:15)

    Beneath the frozen crusts of several of the small, ice-covered moons of Jupiter and Saturn lurk vast oceans that may have been in existence for as long as Earth, and together may contain more than fifty times its total volume of liquid water. Could there be organisms living in their depths? Alien Oceans reveals the science behind the thrilling quest to find out.Kevin Peter Hand is one of today's leading NASA scientists, and his pioneering research has taken him on expeditions around the world. In this captivating account of scientific discovery, he brings together insights from planetary science, biology, and the adventures of scientists like himself to explain how we know that oceans exist within moons of the outer solar system, like Europa, Titan, and Enceladus. He shows how the exploration of Earth's oceans is informing our understanding of the potential habitability of these icy moons, and draws lessons from what we have learned about the origins of life on our own planet to consider how life could arise on these distant worlds.Alien Oceans describes what lies ahead in our search for life in our solar system and beyond, setting the stage for the transformative discoveries that may await us.

    Now, after six years of research, those missions are told in Blind Man's Bluff, a magnificent achievement in investigative reporting. It reads like a spy thriller -- except everything in it is true. This is an epic of adventure, ingenuity, courage, and disaster beneath the sea, a story filled with unforgettable characters who engineered daring missions to tap the enemy's underwater communications cables and to shadow Soviet submarines. It is a story of heroes and spies, of bravery and tragedy.

    Simultaneously a political, social and oral history, this book will quickly become the preeminent short history of Russia's recent past. Photos.

    She entered Ah-gwah-ching State Sanatorium at Walker, Minnesota, for what she thought would be a short stay. In January, her tuberculosis spread, and she nearly died. Her recovery required many months of bed rest and medical care.Marilyn loved to write, and the story of her three-year residency at the sanatorium is preserved in hundreds of letters that she mailed back home to her parents, who could visit her only occasionally and whom she missed terribly. The letters functioned as a diary in which Marilyn articulately and candidly recorded her reactions to roommates, medical treatments, Native American nurses, and boredom. She also offers readers the singular perspective of a bed-bound teenager, gossiping about boys, requesting pretty new pajamas, and enjoying Friday evening popcorn parties with other patients.Selections from this cache of letters are woven into an informative narrative that explores the practices and culture of a midcentury tuberculosis sanatorium and fills in long-forgotten details gleaned from recent conversations with Marilyn, who "graduated" from the sanatorium and went on to lead a full, productive life.

    Intense, colorful, and dramatic --the man who hit a golf ball on the moon -- he was among the most private of America's public figures and, until his death in 1998, he guarded the story of his life zealously. Light This Candle, based on Neal Thompson's exclusive access to private papers and interviews with Shepard's family and closest friends -- including John Glenn, Wally Schirra, and Gordon Cooper -- offers a riveting, action-packed account of Shepard's life. Among the first men to fly off aircraft carriers, he was one of the most fearless test pilots. He endured long separations from his devoted wife and three daughters to fly dangerous missions, working his way up the ranks despite clashes with authority over his brazen flying maneuvers and penchant for risky pranks. Hugely competitive, he beat out John Glenn for the first Mercury spaceflight and then overcame a rare illness to return to space again on Apollo 14. He took every challenge head-on and seemed to win every time. Long overdue, Light This Candle is a candid and inspiring account of a bold American life.

    As recounted by Ben Rich, the operation's brilliant boss for nearly two decades, the chronicle of Lockheed's legendary Skunk Works is a drama of cold war confrontations and Gulf War air combat, of extraordinary feats of engineering & achievement against fantastic odds. Here are up-close portraits of the maverick band of scientists & engineers who made the Skunk Works so renowned. Filled with telling personal anecdotes & high adventure, with narratives from the CIA & from Air Force pilots who flew the many classified, risky missions, this book is a portrait of the most spectacular aviation triumphs of the 20th century.

    Chosen from hundreds of crackerjack pilots for their fitness, intelligence & courage, the original Mercury Seven astronauts risked their lives to cross the space frontier. In We Seven they take readers behind the scenes to show them their training, technology & teamwork, & to share personal stories, including the lighter moments of their mission. They bring readers inside the Mercury program, even into the space capsules themselves. We Seven straps you in with the astronauts & rockets you along for the ride. Share Alan Shepard's exhilaration as he breaks thru the earth's atmosphere. Endure moments of panic with Gus Grissom when his hatch blows, stranding him in the open sea. Race with John Glenn as he makes split-second life-or-death maneuvers during reentry, & feel his relief when he emerges safe but drenched with sweat. Despite such heroism, Project Mercury was more than the story of individual missions. It defined the manned space flight program to come, from Gemini thru Apollo. In We Seven America's original astronauts tell us 1sthand about the space program they pioneered, & share with us the hopes of the USA at the dawn of a new era.

    Eva had long believed that her father was a U.S. State Department employee. She had no idea that he was handling the CIA’s highest-ranking double agent—Dmitri Fedorovich Polyakov—a Soviet general whose code name was TOPHAT. Dillon’s father and Polyakov had a close friendship that went back years, to their first meeting in Burma in the mid-1960s. At the height of the Cold War, the Russian double agent offered the CIA an unfiltered view into the vault of Soviet intelligence. His collaboration helped ensure that tensions between the two nuclear superpowers did not escalate into a shooting war.Spanning fifty years and three continents, Spies in the Family is a deeply researched account of two families on opposite sides of the lethal espionage campaigns of the Cold War, and two men whose devoted friendship lasted a lifetime, until the devastating final days of their lives. With impeccable insider access to both families as well as knowledgeable CIA and FBI officers, Dillon goes beyond the fog of secrecy to craft an unforgettable story of friendship and betrayal, double agents and clandestine lives, that challenges our notions of patriotism, exposing the commonality between peoples of opposing political economic systems.Both a gripping tale of spy craft and a moving personal story, Spies in the Family is an invaluable and heart-rending work.

    He shows that the scientists of ancient and medieval times not only did not understand what we understand about the world—they did not understand what there is to understand, or how to understand it. Yet over the centuries, through the struggle to solve such mysteries as the curious backward movement of the planets and the rise and fall of the tides, the modern discipline of science eventually emerged. Along the way, Weinberg examines historic clashes and collaborations between science and the competing spheres of religion, technology, poetry, mathematics, and philosophy.An illuminating exploration of the way we consider and analyze the world around us, To Explain the World is a sweeping, ambitious account of how difficult it was to discover the goals and methods of modern science, and the impact of this discovery on human knowledge and development.

    T-Minus: The Race to the Moon is the story of the people who made it happen, both in the rockets and behind the scenes.