All the matter and light we can see in the universe makes up a trivial 5 per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced.

Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That ’something' is dark matter – invisible material in five times the quantity of the familiar stuff of stars and planets.

By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly fourteen times greater than all the visible material in existence.

Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.

Indulge your curiosity with this humorous and fascinating book that demystifies the surprising myths about space.

In the latest book from the Everything You Know is Wrong series, Matt Brown brings you a compendium of amazing facts about our planet, the universe, and everything in between! Thanks to popular sci-fi films and TV shows, there have been many misconceptions about the cosmos – from travelling through worm-holes to blowing up asteroids. In Everything You Know About Space is Wrong, you'll find a plethora of myths, legends and misquotes that have shaped the way you view the universe today. Think that the vacuum of space would make your blood boil and your head explode? It won't, and there have been people who have survived without wearing a suit in space. Think that astronauts float in space because there is zero-gravity? They're actually constantly falling towards the Earth. Think that the colour of space is black? It's actually predominantly green.

Chock-full of facts about the cosmos, how it works (and how it doesn't!), this illuminating book will guide you through the mine of misinformation to answer such questions as whether we will meet aliens in our lifetime (SETI predicts we'll find evidence of ET by 2040!), what happens in the centre of the black hole, and why Mercury is not the hottest planet in the solar system. Discovering untruths about popular science, Everthing You Know About Space is Wrong provides a hugely entertaining insight into our universe.

Top ten Sunday Times Bestseller 'Engaging, ambitious and creative' Guardian Where are we? Are we alone? Who are we? Why are we here? What is our future? Human Universe tackles some of the greatest questions that humans have asked to try and understand the very nature of ourselves and the Universe in which we live. Through the endless leaps of human minds, it explores the extraordinary depth of our knowledge today and where our curiosity may lead us in the future. With groundbreaking insight it reveals how time, physics and chemistry came together to create a creature that can wonder at its own existence, blessed with an unquenchable thirst to discover not just where it came from, but how it can think, where it is going and if it is alone. Accompanies the acclaimed BBC TV series.

Sacred Geometry exists all around us in the natural world, from the unfurling of a rose bud to the pattern of a tortoise shell, the sub-atomic to the galactic. A pure expression of number and form, it is the language of creation and navigates the unseen dimensions beyond our three-dimensional reality. Since its discovery, humans have found many ways - stone circles, mandalas, labyrinths, temples- to call upon this universal law as a way of raising consciousness and communicating with a divine source. By becoming aware of the dots and lines that build the world around you, Sacred Geometry will teach you how to bring this mystical knowledge into your daily practice.

Get the straight, scientific story on things like astrology, ghosts, spontaneous human combustion, psychic surgery, and ESP. You hear about these fantastic happenings every day on television and in the supermarket tabloids. Is any of this true or are they making it all up? While many people tune in just for laughs, plenty of readers believe their outrageous claims - often because they simply don't have a clear notion of what science really is. So how do you figure out what constitutes real science and what is nonsense? "Quantum Leaps in the Wrong Direction" carefully deconstructs five examples of pseudoscience - UFOs, out-of-body experiences, astrology, creationism, and ESP - and gives easy recipes to test other dubious notions so that you can tell what lies in the realm of real science and what more properly deserves the tag of pseudoscience. This second edition of "Quantum Leaps in the Wrong Direction" will include a brand new chapter on alternative medicine, up-to-date links for reliable skeptical websites, organizations and meetings, and a fully updated additional reading section.

In the span of a single lifetime, light pollution stemming from Artificial Light At Night (ALAN) has severed our connection with the stars that we've had since the dawn of time. With the nocturnal biosphere significantly altered, light's anthropogenic influence has compelled millions of people to seek out the last remaining dark skies. This book explores the burgeoning growth of the astrotourism market, identifies star seeker trends, how the stars have shaped civilizations, and the budding space tourism industry. Discover ways to develop a destination for those who will cater to the astrotourist, share the night with guests, how to find customers, and the 2024 Great North American Eclipse. Meteor storms, eclipses, auroras, and other celestial phenomena have lured travellers for years. Here, the author expands the field of astrotourism with the inclusion of astronomical clocks, megaliths, and sundials, which are used to track the movement of the stars.

Stargazing is among the most peaceful and inspiring outdoor activities. Night Sky, the award-winning book by Jonathan Poppele, makes it more fun than ever! Take a simple approach to finding 62 constellations by focusing on one constellation at a time, instead of attempting to study dizzying charts. Start with the easy-to-find constellations during each season and work toward the more difficult ones. Better yet, you'll learn how to locate any constellation in relation to the Big Dipper, the North Star, and the top of the sky. With two ways to locate each constellation, you'll know where in the sky to look and what to look for! Along the way, you'll be introduced to mythology, facts, and tidbits, as well as details about the planets, solar system, and more! As an added bonus, the book comes with a red-light flashlight for night reading.

Copernicus sowed the seed from which science has grown to be a dominant aspect of modern culture, fundamental in shaping our understanding of the workings of the cosmos. John Henry reveals why Copernicus was led to such a seemingly outrageous and implausible idea as a swiftly moving Earth.

This is the story of Bernie Mills, Chris Christiansen, Paul Wild and Ron Bracewell, members of a team of radio astronomers that would lead Australia, and the world, into this new field of research. Each of the four is remembered for his remarkable work: Mills for the development the cross type instrument that now bears his name; Christiansen for the application of rotational synthesis techniques; Wild for the masterful joining of observations and theory to elicit the nature of the solar atmosphere; Bracewell for his contribution to imaging theory. As well, these Four Pillars are remembered for creating a remarkable environment for scientific discovery and for influencing the careers of future generations. Their pursuit of basic science helped pave the way for technological developments in areas ranging from Wi-Fi to sonar to medical imaging to air navigation, and for underpinning the foundations of modern cosmology and astrophysics.

A special new edition of Apollo 13 Manual, published to coincide with the 50th Anniversary of the Moon mission launched in April 1970, which very nearly turned into a catastrophe. New content includes an expanded look at what was learned from the analysis of the problems that precipitated the crisis, and how these lessons affected the future space programme, and also a look at the worldwide reaction to the crisis, as the the international community held its breath. This Haynes Manual tells the story of the complex technical challenges involved in returning the crippled spacecraft safely to Earth, explained in detail by an expert author who was there through it all in Mission Control during the six-day flight. It is also the story of three very special heroes, the crew members of Apollo 13: Jim Lovell, Jack Swigert and Fred Haise.

Keeping in mind that we can only see the universe from the comfort of our home galaxy, Bascom begins his text by meticulously laying the necessary groundwork to understand the Big Bang's mathematics without using any equations. He then paints a freeze-frame picture of our universe as if we had taken a three-dimensional picture with a giant camera. Within this picture, he traces forces beginning with the smallest (a single atom) to the biggest (the cosmos), keeping in mind that in this frozen moment everything further away from the observer spatially is also further away from the observer in time; that is, older. Soon a very real and very vivid image of the Big Bang appears (especially in things that are loud or hot), echoing down through time and into our everyday lives, reflected in every atom during every measurement. Then, slowly but deliberately, Bascom unfreezes this picture, ratcheting each moment from one to the next, showing us how and why quantum particles are constantly in contact with the Big Bang and why that allows the particles to pop in and out of existence from moment to moment, what a photon is, and what exactly we mean when we say that free space has energy. Whether you're interested in the Big Bang, the weirdness of quantum mechanics, or simply enjoy thinking about the biggest, loudest, and oldest things in our universe, this book will help you question your deepest notions about time and space, while staying firmly rooted in empirical observation. Throughout the text, Bascom sidesteps traditional non-fiction modes, using colorful explanations and vivid imagery to place the reader in simultaneous contact with both the Big Bang and fundamental particles. As a result, Bascom provides the tools and language necessary to contemplate the strangeness of our universe.

'A deft, frequently dramatic tour' Nature 'A wonderfully clear and readable book . . . Gives a splendid overview of our Sun's planetary system, including its history and exploration' Dame Jocelyn Bell Burnell * We have the impression that the solar system is perfectly regular like a clock, or a planetarium instrument. On a short timescale it is. But, seen in a longer perspective, the planets, and their satellites, have exciting lives, full of events - for example, did you know that Saturn's moon, Titan, boasts lakes which contain liquid methane surrounded by soaring hills and valleys, exactly as the earth did before life evolved on our fragile planet? Or that Mercury is the shyest planet? Or, that Mars' biggest volcano is 100 times the size of Earth's, or that its biggest canyon is 10 times the depth of the Grand Canyon, or that it wasn't always red, but blue? The culmination of a lifetime of astronomy and wonder, Paul Murdin's enchanting new book reveals everything you ever wanted to know about the planets, their satellites, and our place in the solar system.

This is an unusual and practical guide to the sky as we see it -- with the naked eye. The author, an experienced teacher, leads the reader from the stars as seen from Earth, through observation of the Sun, Moon and various planets, to a deeper understanding of the Copernican revolution, comets and meteors, and to the sky of the Southern Hemisphere. The text includes mythological and historical aspects of the subject and has numerous exercises for the student. The final chapter is a unique collection of poetry related to the stars from ancient India to modern times. Appendices include future astronomical events, technical data, materials and publications, and a comprehensive glossary of astronomical terms.

Did you know that stars are seasonal? That Orion is one of the brightest constellations? That a single day on Venus is longer than an entire year on Venus? Space has captivated mankind since the beginning of time. Fifty years ago, Neil Armstrong became the first man to step on the moon and since then our knowledge of astronomy has continued to expand. With so many mysteries yet to be solved, science journalist Abigail Beall takes readers on an astonishing journey though the landscape of space. In The Art of Urban Astronomy, you will be guided through the seasons and learn about the brightest stars and constellations, the myths and legends of astronomy and how to identify star clusters and galaxies with just your eyes or a pair of binoculars. For urban dwellers wrapped up in the rush and bustle of the city, it can be calming and truly valuable to take the time simply to stop, look and reconnect with nature. Packed full of seasonal star charts, constellation charts and fascinating facts, this is the perfect guide for those who have looked up at the night sky and don't know where to begin. After reading this book, you'll never look up in the same way again.

When astronomers today look up at the night sky they picture a spectacular and infinite universe--full of pulsars, quasars, and black holes and ruled by arcane laws of space and time. Once, ancient astronomers looked up and saw only points of light tracing calm movements across the heavens. But they too were moved to wonder about the meaning of what they saw. In Astronomy through the Ages, Sir Robert Wilson tells the story of how our understanding of the universe has evolved through history--of how the sedate and stable star field of ancient times has been replaced by the vast and explosive universe we know today. Wilson, one of the most distinguished astronomers of the twentieth century, begins by tracing the astronomical studies of the ancient Babylonians, Egyptians, and Greeks and reviews important early contributions from India, China, and the Islamic world. He explains the development of the sun-centered model of the universe in Renaissance Europe. He then tells how the development of the telescope, photography, and spectroscopy pushed back the limits of the observable universe and eventually brought astronomy into the twentieth century. Finally, he describes the rapid advances in radio and space astronomy and other methods over the past fifty years that have ushered in a new "golden age" of astronomy. These advances have not only allowed observation of deep space but also enabled scientists to unlock the secrets of the universe itself from its origin to its possible fate. Wilson himself has played an important role in these discoveries as the developer of one of the most successful astronomical satellites ever launched, the International Ultraviolet Explorer. While focusing on the human side of astronomical discovery, Wilson also provides readers with a basic understanding of difficult concepts, explaining relativity and quantum mechanics without using technical language or mathematics. Remarkable in its scope and clarity,Astronomy through the Ages provides an accessible view of historical discoveries and modern advances and shows why excitement about astronomy is even greater today than when Galileo first gazed in wonder at the rings of Saturn. Originally published in 1998. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Here is the essential companion to Welcome to the Universe, a New York Times bestseller that was inspired by the enormously popular introductory astronomy course for non-science majors that Neil deGrasse Tyson, Michael A. Strauss, and J. Richard Gott taught together at Princeton. This problem book features more than one hundred problems and exercises used in the original course--ideal for anyone who wants to deepen their understanding of the original material and to learn to think like an astrophysicist. Whether you're a student or teacher, citizen scientist or science enthusiast, your guided tour of the cosmos just got even more hands-on with Welcome to the Universe: The Problem Book. * The essential companion book to the acclaimed bestseller* Features the problems used in the original introductory astronomy course for non-science majors at Princeton University* Organized according to the structure of Welcome to the Universe, empowering readers to explore real astrophysical problems that are conceptually introduced in each chapter* Problems are designed to stimulate physical insight into the frontier of astrophysics* Problems develop quantitative skills, yet use math no more advanced than high school algebra* Problems are often multipart, building critical thinking and quantitative skills and developing readers' insight into what astrophysicists do* Ideal for course use--either in tandem with Welcome to the Universe or as a supplement to courses using standard astronomy textbooks--or self-study* Tested in the classroom over numerous semesters for more than a decade* Prefaced with a review of relevant concepts and equations* Full solutions and explanations are provided, allowing students and other readers to check their own understanding

This book describes the future of the Artemis Lunar Program from the years 2017 to about 2030. Despite the uncertainty of the times and the present state of space exploration, it is likely that what is presented in this book will actually happen, to one degree or another. As history has taught us, predictions are often difficult, but one can see enough into the future to be somewhat accurate. As the Bible says, "Wesee thru the glass, but darkly." All of the elements of the proposed program are described from several perspectives: NASA's, the commercial space industry and our International partners. Also included are descriptions of the many vehicles, habitats, landers, payloads and experiments. The book tells the story of the buildup of a very small space station in a strange new lunar orbit and the descent of payloads and humans, including the first women and next man, to the lunar surface with the intent to evolve a sustained presence over time.

Boldly go where no man has gone before and discover the real science behind the cyborgs, starships, aliens, and antimatter of the Star Trek galaxy. Star Trek is one of the highest-grossing media franchises of all time. It has changed our cultural landscape in so many ways since it first aired in 1966. The franchise has generated billions of dollars in revenue, leading to a wide range of spin-off games, novels, toys, and comics. Star Trek is noted for its social science, too, with its progressive civil rights stances and its celebration of future diversity that began with The Original Series, one of television's first multiracial casts. The Science of Star Trek explores one of the greatest science-fiction universes ever created and showcases the visionary tech that inspired and influenced the real-world science of today. The perfect Star Trek gift for fans of the franchise, this book addresses many unanswered, burning questions, including: What can Star Trek tell us about aliens in our Milky Way? How has Star Trek influenced space culture? What can Star Trek tell us about planet hunting? What Star Trek machines came true? When will we boldly go? Learn more about one of our favorite modern epics with The Science of Star Trek!

What can you measure and what are your limits when orbiting in space? Learn about what physical quantities you can measure and what types of sensors you can buy or build. We cover the 5 essential design limits as well: power, bandwidth, resolution, computing... and legal limitations. Explore what you can play with using your own personal satellite.

Living with the Stars tells the fascinating story of what truly makes the human body. The body that is with us all our lives is always changing. We are quite literally not who we were years, weeks, or even days ago: our cells die and are replaced by new ones at an astonishing pace. The entire body continually rebuilds itself, time and again, using the food and water that flow through us as fuel and as construction material. What persists over time is not fixed but merely a pattern in flux. We rebuild using elements captured from our surroundings, and are thereby connected to animals and plants around us, and to the bacteria within us that help digest them, and to geological processes such as continental drift and volcanism here on Earth. We are also intimately linked to the Sun's nuclear furnace and to the solar wind, to collisions with asteroids and to the cycles of the birth of stars and their deaths in PHI15SCImic supernovae, and ultimately to the beginning of the universe. Our bodies are made of the burned out embers of stars that were released into the galaxy in massive explosions billions of years ago, mixed with atoms that formed only recently as ultrafast rays slammed into Earth's atmosphere. All of that is not just remote history but part of us now: our human body is inseparable from nature all around us and intertwined with the history of the universe.

Terms such as "expanding Universe," "big bang," and "initial singularity," are nowadays part of our common language. The idea that the Universe we observe today originated from an enormous explosion (big bang) is now well known and widely accepted, at all levels, in modern popular culture. But what happens to the Universe before the big bang? And would it make any sense at all to ask such a question? In fact, recent progress in theoretical physics, and in particular in String Theory, suggests answers to the above questions, providing us with mathematical tools able in principle to reconstruct the history of the Universe even for times before the big bang.

In the emerging cosmological scenario the Universe, at the epoch of the big bang, instead of being a "new born baby" was actually a rather "aged" creature in the middle of its possibly infinitely enduring evolution. The aim of this book is to convey this picture in non-technical language accessibile also to non-specialists. The author, himself a leading cosmologist, draws attention to ongoing and future observations that might reveal relics of an era before the big bang.