Stephen Hawking’s worldwide bestseller, A Brief History of Time , has been a landmark volume in scientific writing. Its author’s engaging voice is one reason, and the compelling subjects he addresses is another: the nature of space and time, the role of God in creation, the history and future of the universe. But it is also true that in the years since its publication, readers have repeatedly told Professor Hawking of their great difficulty in understanding some of the book’s most important concepts. This is the origin of and the reason for A Briefer History of Time : its author’s wish to make its content more accessible to readers—as well as to bring it up-to-date with the latest scientific observations and findings. Although this book is literally somewhat “briefer,” it actually expands on the great subjects of the original. Purely technical concepts, such as the mathematics of chaotic boundary conditions, are gone. Conversely, subjects of wide interest that were difficult to follow because they were interspersed throughout the book have now been given entire chapters of their own, including relativity, curved space, and quantum theory. This reorganization has allowed the authors to expand areas of special interest and recent progress, from the latest developments in string theory to exciting developments in the search for a complete unified theory of all the forces of physics. Like prior editions of the book—but even more so— A Briefer History of Time will guide nonscientists everywhere in the ongoing search for the tantalizing secrets at the heart of time and space.

"The world's leading alien hunter" -- New York Times Magazine From acclaimed Harvard astrophysicist and bestselling author of Extraterrestrial comes a mind-expanding new book explaining why becoming an interstellar species is imperative for humanity's survival and detailing a game plan for how we can settle among the stars. In the New York Times bestseller Extraterrestrial, Avi Loeb, the longest serving Chair of Harvard's Astronomy Department, presented a theory that shook the scientific community: our solar system, Loeb claimed, had likely been visited by a piece of advanced alien technology from a distant star. This provocative and persuasive argument opened millions of minds internationally to the vast possibilities of our universe and the existence of intelligent life beyond Earth. But a crucial question remained: now that we are aware of the existence of extraterrestrial life, what do we do next? How do we prepare ourselves for interaction with interstellar extraterrestrial civilization? How can our species become interstellar? Now Loeb tackles these questions in a revelatory, powerful call to arms that reimagines the idea of contact with extraterrestrial civilizations. Dismantling our science-fiction fueled visions of a human and alien life encounter, Interstellar provides a realistic and practical blueprint for how such an interaction might actually occur, resetting our cultural understanding and expectation of what it means to identify an extraterrestrial object. From awe-inspiring searches for extraterrestrial technology, to the heated debate of the existence of Unidentified Aerial Phenomena, Loeb provides a thrilling, front-row view of the monumental progress in science and technology currently preparing us for contact. He also lays out the profound implications of becoming--or not becoming--interstellar; in an urgent, eloquent appeal for more proactive engagement with the world beyond ours, he powerfully contends why we must seek out other life forms, and in the process, choose who and what we are within the universe. Combining cutting edge science, physics, and philosophy, Interstellar revolutionizes the approach to our search for extraterrestrial life and our preparation for its discovery. In this eye-opening, necessary look at our future, Avi Loeb artfully and expertly raises some of the most important questions facing us as humans, and proves, once again, that scientific curiosity is the key to our survival.

WHAT ARE THESE GRACEFUL VISITORS TO OUR SKIES? WE NOW KNOW THAT THEY BRING BOTH LIFE AND DEATH AND TEACH US ABOUT OUR ORIGINS. Comet begins with a breathtaking journey through space astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and portents attached to them. The authors show how comets have spurred some of the great discoveries in the history of science and raise intriguing questions about these brilliant visitors from the interstellar dark. Were the fates of the dinosaurs and the origins of humans tied to the wanderings of a comet? Are comets the building blocks from which worlds are formed? Lavishly illustrated with photographs and specially commissioned full-color paintings, Comet is an enthralling adventure, indispensable for anyone who has ever gazed up at the heavens and wondered why. "SIMPLY THE BEST." *The Times of London "FASCINATING, EVOCATIVE, INSPIRING." *The Washington Post "COMET HUMANIZES SCIENCE. A BEAUTIFUL, INTERESTING BOOK." *United Press International "MASTERFUL . . . SCIENCE, POETRY, AND IMAGINATION." *The Atlanta Journal & Constitution

The untold story of the historic voyage to the moon that closed out one of our darkest years with a nearly unimaginable triumph In August 1968, NASA made a bold decision: in just sixteen weeks, the United States would launch humankind's first flight to the moon. Only the year before, three astronauts had burned to death in their spacecraft, and since then the Apollo program had suffered one setback after another. Meanwhile, the Russians were winning the space race, the Cold War was getting hotter by the month, and President Kennedy's promise to put a man on the moon by the end of the decade seemed sure to be broken. But when Frank Borman, Jim Lovell and Bill Anders were summoned to a secret meeting and told of the dangerous mission, they instantly signed on. Written with all the color and verve of the best narrative non-fiction, Apollo 8 takes us from Mission Control to the astronaut's homes, from the test labs to the launch pad. The race to prepare an untested rocket for an unprecedented journey paves the way for the hair-raising trip to the moon. Then, on Christmas Eve, a nation that has suffered a horrendous year of assassinations and war is heartened by an inspiring message from the trio of astronauts in lunar orbit. And when the mission is over--after the first view of the far side of the moon, the first earth-rise, and the first re-entry through the earth's atmosphere following a flight to deep space--the impossible dream of walking on the moon suddenly seems within reach. The full story of Apollo 8 has never been told, and only Jeffrey Kluger--Jim Lovell's co-author on their bestselling book about Apollo 13--can do it justice. Here is the tale of a mission that was both a calculated risk and a wild crapshoot, a stirring account of how three American heroes forever changed our view of the home planet.

The Case for Mars makes living in space seem more possible than ever in this updated 25th anniversary edition, featuring the latest information on the planet's exploration and the drive to send humans there. Since the beginning of human history, Mars has been an alluring dream—the stuff of legends, gods, and mystery. The planet most like ours, it had long been thought impossible to reach, let alone explore and inhabit. But that is changing fast. In February 2021, the American rover Perseverance will touch down on Mars. Equipped with a powerful suite of scientific instruments—including some that will attempt to make oxygen from the Martian atmosphere—the rover also carries a helicopter that will take spectacular panoramic movies from the air. Most exciting of all, a spectrometer onboard may find evidence of fossils left behind by microbes millions of years ago, when the planet was warm and wet, proving at last that life on Earth is not unique, but a general phenomenon in the universe. Meanwhile, in Boca Chica, Texas, Elon Musk’s SpaceX has created a shipyard that is building and testing the vessels that will take humans to Mars before this decade is out. Leading space exploration expert Robert Zubrin crafted the daring blueprint for humanity’s reach to the Red Planet twenty-five years ago, when he first published The Case for Mars . Now, in this updated edition, he looks to the future once more to describe how—in an era when the American space program and private companies like SpaceX are racing to send astronauts to Mars—our first colonies there are imminent. In the grand tradition of successful explorers, Zubrin calls for a travel-light and live-off-the-land approach to Martian settlement. He explains how scientists can use present-day technology to send humans to Mars, produce fuel and oxygen on the planet’s surface with its own natural resources, build bases and communities, and one day, terraform—or alter the atmosphere of the planet in order to pave the way for sustainable life. As a landmark new mission opens the decisive campaign to take humans to the Red Planet, Zubrin lays out a comprehensive plan to build life on a new world.

Book by Kuhn, Thomas S.

A wide-ranging compendium of twenty-six essays explores such scientific subjects as particle physics, the planets, the biology and physics of decompression, evolution, the history of time, and the benefits and problems of high technology robotics

From award-winning physicist, public intellectual, and the bestselling author of A Universe from Nothing Lawrence Krauss, comes “a masterful blend of history, modern physics, and cosmic perspective that empowers the reader to not only embrace our understanding of the universe, but also revel in what remains to be discovered” (Neil deGrasse Tyson, American Museum of Natural History). In this grand poetic vision of the universe, Lawrence Krauss tells the dramatic story of the discovery of the hidden world that underlies reality—and our place within it. Reality is not what you think or sense—it’s weird, wild, and counterintuitive, and its inner workings seem at least as implausible as the idea that something can come from nothing. With his trademark wit and accessible style, Krauss leads us to realms so small that they are invisible to microscopes, to the birth and rebirth of light, and into the natural forces that govern our existence. His unique blend of rigorous research and engaging storytelling invites us into the lives and minds of remarkable scientists who have helped unravel the unexpected fabric of reality with reasoning rather than superstition and dogma, and to explain how everything we see—and can’t see—came about. A passionate advocate for reason, Krauss gives the rationale for the seemingly irrational—and the mysteries and apparent contradictions of quantum physics, and explores what that means for our lives here on Earth—and beyond. At its core, The Greatest Story Ever Told—So Far is about the best of what it means to be human—an epic history of our ultimately purposeless universe that addresses the question, “Why are we here?”

"Robert Zubrin is a true engineering genius like the heroic engineers of the past." -- Frederick Turner, American Enterprise Using nuts-and-bolts engineering and a unique grasp of human history, Robert Zubrin takes us to the not-very-distant future, when our global society will branch out into the universe. From the current-day prospect of lunar bases and Mars settlements to the outer reaches of other galaxies, Zubrin delivers the most important and forward-looking work on space and the true possibilities of human exploration since Carl Sagan's Cosmos. Sagan himself said of Zubrin's humans-to-Mars plan, " Bob Zubrin really, nearly alone, changed our thinking on this issue." With Entering Space , he takes us further, into the prospect of human expansion to the outer planets of our own solar system--and beyond.

In More Things in Heaven and Earth, Levy argues the fundamental unity of the arts and the sciences, pointing out the poetry that is in astronomy and the scientific references to the night sky found in many of the great poets. He illustrates his arguments with spectacular colour photographs of comets and eclipses and also with extensive quotation of and commentary on Chaucer, Shakespeare, Milton, Donne, Keats, Tennyson, Hopkins and Frost. For him the collision of the comet bearing his name with the planet Jupiter, the greatest cataclysm in the history of astronomy, is an opportunity to get a whole new generation excited about our universe in a way that has not been possible since the 1969 Moon landing.

During the sixteenth and seventeenth centuries a radical change occurred in the patterns and framework of European thought. In the wake of Copernican theory and discoveries through the telescope, the notion of an ordered cosmos of "fixed stars" gave way to that of a universe infinite in both time and space-with significant and far-reaching consequences for human thought. Alexandre Koyré brilliantly interprets this revolution in terms of the change that occurred in our conception of the universe and our place in it, and illustrates the primacy of this change in the development of the modern world. "An important contribution to the problem of the transition from the world view characteristic of the medieval centuries to that which rapidly gained acceptance after the seventeenth century." (Philosophical Quarterly) "Koyré has provided the material and has illuminated it with uniformly perceptive and occasionally brilliant commentary.... An important contribution to the study of 17th-century thought." (Thomas S. Kuhn, Science) "A model of scholarliness without pedantry, of clarity without oversimplification." (Arthur Koestler, Encounter) "Surely a work that will be welcomed alike by the scientist, philosopher, and historian of ideas." (Philosophy and Phenomenological Research) Alexandre Koyré was a member of the Institute for Advanced Study, Princeton, and professor at the Ecole Pratique des Hautes Etudes in Paris. His books include Discovering Plato and Newtonian Studies.

The exploration of the first billion years of the history of the Universe represents one of the great challenges of contemporary astrophysics. This book contains the worked out lectures given at the 36th Saas-Fee Advanced Course "First Light in the Universe" by three eminent scientists in the field: Abraham Loeb, Andrea Ferrara, and Richard Ellis. The formation of the first stars and black holes, the initial mass function, feedback effects, early dust formation, the cosmic star formation history, distant galaxies, cosmic reionisation and the cosmic infrared background are the main topics treated. This book contains an accessible and up-to-date review of the field and will be useful to graduate students of astronomy, cosmologists, physicists and researchers. The topic of this book is particularly timely, as many new important observational facilities are being built, for which "first light in the universe" is one of the main science drivers.