Are we alone in the universe, or are there other life forms 'out there'? This is one of the most scientifically and philosophically important questions that humanity can ask. Now, in the early 2020s, we are tantalizingly close to an answer. As this book shows, the answer will almost certainly be that life forms are to be found across the Milky Way and beyond. They will be thinly spread, to be sure. Yet the number of inhabited planets probably runs into the trillions. Some are close enough for us to detect evidence of life by analysing their atmospheres. This evidence may be found within a couple of decades. Its arrival will be momentous. But even before it arrives we can anticipate what life elsewhere will be like by examining the ecology and evolution of life on Earth. This book considers the current state of play in relation to these titanic issues.

The chemical composition of any planetary atmosphere is of fundamental importance in determining its photochemistry and dynamics in addition to its thermal balance, climate, origin and evolution. Divided into two parts, this book begins with a set of introductory chapters, starting with a concise review of the Solar System and fundamental atmospheric physics. Chapters then describe the basic principles and methods of spectroscopy, the main tool for studying the chemical composition of planetary atmospheres, and of photochemical modeling and its use in the theoretical interpretation of observational data on chemical composition. The second part of the book provides a detailed review of the carbon dioxide atmospheres and ionospheres of Mars and Venus, and the nitrogen-methane atmospheres of Titan, Triton and Pluto. Written by an expert author, this comprehensive text will make a valuable reference for graduate students, researchers and professional scientists specializing in planetary atmospheres.

The Encyclopedia of the Solar System, third edition provides a framework for understanding the origin and evolution of the solar system, historical discoveries, and details about planetary bodies and how they interact-with an astounding breadth of content and breathtaking visual impact. The encyclopedia includes the latest explorations and observations, hundreds of color digital images and illustrations, and over 1,000 pages. It stands alone as the definitive work in this field, and will serve as a modern messenger of scientific discovery and provide a look into the future of our solar system.

New additions to the third edition will reflect the latest progress and growth in the field, including past and present space missions to the terrestrial planets, the outer solar systems and space telescopes used to detect extrasolar planets.

Presents 700 full-color digital images and diagrams from current space missions and observatories, bringing to life the content and aiding in the understanding and retention of key concepts.
Includes a substantial appendix containing data on planetary missions, fundamental data of relevance for planets and satellites, and a glossary, providing immediately accessible mission data for ease of use in conducting further research or for use in presentations and instruction.
Contains an extensive bibliography, providing a guide for deeper studies into broader aspects of the field and serving as an excellent entry point for graduate students aiming to broaden their study of planetary science.

On July 21, 1969, the first man set foot on The Moon. When Neil Armstrong was asked if this made him feel big, he answered: "No, it made me feel really, really small." 50 years later, this publication celebrates that special moment that put life on earth into a totally different perspective. It collects pictures of the world's best photographers from the 1840s until today. Next to historical photographs and imagery printed in media, the publication features many artists that each in their own way reflect on this mystical celestial body, we call 'moon'. The book shows the diversity of meanings of The Moon, it's relation to mankind and to nature. The Moon has always both attracted and scared people around the world. It is our everyday connection to the unfathomable universe. Since time immemorial it is revered for its beauty, its stillness and mysterious appearance and yet also feared for its supernatural-seeming qualities. In mythology The Moon has always been given a central place. With its magnetic forces it changes the tides and has a direct and uncontrollable impact on mankind from above. In 1840, barely three years after the invention of photography, J.W. Draper makes the first picture ever made of The Moon and since that day photographers have never stopped following his example. The paradoxical aspects of the moon continue to fascinate and inspire. Like a photograph The Moon depends on sunlight to be visible. It has no light of its own and no apparent strength to resist our nightly city lights either. Photographers feel this close connection to The Moon's characteristics and find the perfect object in its aesthetics. The landing on The Moon was a culmination point of the1960's Space Race between the United States and the Soviet Union, which quickly became a symbol of the Cold War. The images of the landing became the bearer of values and symbols of the United States and were widely spread through various media. In 1973 NASA abolished its moon program. The Moon had been conquered and the public seemed to have had lost interest. However, today people still find The Moon fascinating, and humanity continues to dream about setting foot on the sun's shadow.

Finding our Place in the Solar System gives a detailed account of how the Earth was displaced from its traditional position at the center of the universe to be recognized as one of several planets orbiting the Sun under the influence of a universal gravitational force. The transition from the ancient geocentric worldview to a modern understanding of planetary motion, often called the Copernican Revolution, is one of the great intellectual achievements of humankind. This book provides a deep yet accessible explanation of the scientific disputes over our place in the solar system and the work of the great scientists who helped settle them. Readers will come away knowing not just that the Earth orbits the Sun, but why we believe that it does so. The Copernican Revolution also provides an excellent case study of what science is and how it works.

By September 2014, almost two thousand exoplanets -- planets orbiting other suns -- have been confirmed, among these are also Earth-like planets in the habitable zone of their sun. These breakthrough discoveries during the bygone two decades raise questions with regard to the existence of Life elsewhere in our Milky Way Galaxy. The present book addresses the formation of planetary systems in the wake of collapsing interstellar gas and dust clouds, and the generation as well as the survival and germination of simple molecules serving as modules for more complex molecular constructs that constitute life. In this context, the survival of extremophiles in niches on Earth, and the potentiality of primitive life forms on Mars and the subsurface oceans of selected moons in the Solar System are also addressed, as much as the through-space travel of germs, denoted as panspermia. Readers possessing basic knowledge in chemistry and astronomy will additionally profit from the text in terms of an advanced approach towards facts that introduce more complex background information, in particular information provided in sidebars. However, the book is conceptualized in such a way that the less scholarly reader will equally profit from the narrative style by which background information is provided. Along with panspermia, the Gaia hypothesis and other historical thematisations of life beyond Earth are briefly looked at.

The solar wind is a stream of charged particles -- a plasma -- ejected from the upper atmosphere of the sun. It consists mostly of electrons and protons with energies of about 1 keV. These particles are able to escape the sun's gravity, in part because of the high temperature of the corona, but also because of high kinetic energy that particles gain through a process that is not well-understood at this time. The solar wind creates the Heliosphere, a vast bubble in the interstellar medium surrounding the solar system. Other phenomena include geomagnetic storms that can knock out power grids on Earth, the aurorae such as the Northern Lights, and the plasma tails of comets that always point away from the sun. This book presents the latest research in the world on this topic.

Marvel at the wonders of the Universe, from stars and planets to black holes and nebulae, in this exploration of our Solar System and beyond. Universe opens with a look at astronomy and the history of the Universe, using 3D artworks to provide a comprehensive grounding in the fundamental concepts of astronomy, including the basic techniques of practical astronomy. The core of the book is a tour of the cosmos covering the Solar System, the Milky Way, and galaxies beyond our own. Explanatory pages introduce different celestial phenomena, such as galaxies, and are followed by catalogues that profile the most interesting and important examples. A comprehensive star atlas completes the picture, with entries on each of the 88 constellations and a monthly sky guide showing the night sky as it appears throughout the year as viewed from both the northern and southern hemispheres.

As a new wave of interplanetary exploration unfolds, a talented young planetary scientist charts our centuries-old obsession with Mars. 'Beautifully written, emotive - a love letter to a planet' DERMOT O'LEARY, BBC Radio 2 Mars - bewilderingly empty, coated in red dust - is an unlikely place to pin our hopes of finding life elsewhere. And yet, right now multiple spacecraft are circling, sweeping over Terra Sabaea, Syrtis Major, the dunes of Elysium and Mare Sirenum - on the brink, perhaps, of a discovery that would inspire humankind as much as any in our history. With poetic precision and grace, Sarah Stewart Johnson traces the evocative history of our explorations of Mars. She interlaces her personal journey as a scientist with tales of other seekers - from Galileo to William Herschel to Carl Sagan - who have scoured this enigmatic planet for signs of life and transformed it in our understanding from a distant point of light into a complex world. Ultimately, she shows how its story is also a story about Earth: it is a foil, a mirror, a tell-tale reflection of our own anxieties and yearnings to find - if we're lucky - that we're not alone. 'Elegantly written and boundlessly entertaining' Sunday Telegraph 'Beguiling' The Times 'Johnson's prose swirls with lyrical wonder, as varied and multi-hued as the apricot deserts, butterscotch skies and blue sunsets of Mars' Anthony Doerr, New York Times Book Review 'Elegantly crafted' Lord Martin Rees, Astronomer Royal

Fully updated throughout, including revised illustrations and new images from NASA missions, this new edition provides an overview of Earth's history from a planetary science perspective for Earth science undergraduates. Earth's evolution is described in the context of what we know about other planets and the cosmos at large, from the origin of the cosmos to the processes that shape planetary environments and from the origins of life to the inner workings of cells. Astronomy, Earth science, planetary science and astrobiology are integrated to give students the whole picture of how the Earth has come to its present state and an understanding of the relationship between key ideas in different fields. The book presents concepts in nontechnical language and mathematical treatments are avoided where possible. New end-of-chapter summaries and questions allow students to check their understanding and critical thinking is emphasized to encourage students to explore ideas scientifically for themselves.

Planetary rings are among the most intriguing structures of our solar system and have fascinated generations of astronomers. Collating emerging knowledge in the field, this volume reviews our current understanding of ring systems with reference to the rings of Saturn, Uranus, Neptune, and more. Written by leading experts, the history of ring research and the basics of ring-particle orbits is followed by a review of the known planetary ring systems. All aspects of ring system science are described in detail, including specific dynamical processes, types of structures, thermal properties and their origins, and investigations using computer simulations and laboratory experiments. The concluding chapters discuss the prospects of future missions to planetary rings, the ways in which ring science informs and is informed by the study of other astrophysical disks, and a perspective on the field's future. Researchers of all levels will benefit from this thorough and engaging presentation.

This book looks at the persistence of life and how difficult it would be to annihilate life, especially a species as successful as humanity. The idea that life in general is fragile is challenged by the hardiness of microbes, which shows that astrobiology on exoplanets and other satellites must be robust and plentiful. Microbes have adapted to virtually every niche on the planet, from the deep, hot biosphere, to the frigid heights of the upper troposphere. Life, it seems, is almost indestructible. The chapters in this work examine the various scenarios that might lead to the extermination of life, and why they will almost always fail. Life's highly adaptive nature ensures that it will cling on no matter how difficult the circumstances. Scientists are increasingly probing and questioning life's true limits in, on and above the Earth, and how these limits could be pushed elsewhere in the universe. This investigation puts life in its true astronomical context, with the reader taken on a journey to illustrate life's potential and perseverance.

This is just the resource you need to get middle schoolers ready for August 21, 2017—the day when millions of North Americans will have the rare chance to witness a total solar eclipse. But the book’s usefulness won’t end when the eclipse does! Solar Science offers more than three dozen hands-on, inquiry-based activities on many fascinating aspects of solar astronomy. The activities cover the Sun’s motions, space weather caused by the Sun, the measuring of time and seasons in our daily lives, and much more. The authors are award-winning experts in both astronomy and science education, so they know how to prompt students to work like scientists by asking questions, doing experiments, comparing notes, and refining and reporting results. They also know you have to make the most of every instructional minute. The book contains plenty of ideas for related writing projects; grade-appropriate math examples; and connections to music, art, fiction, and history. It’s also aligned with the three-dimensional learning encouraged by the Next Generation Science Standards and connects to the Common Core State Standards. Solar Science is ideal for teachers, informal science educators, youth group leaders, curriculum specialists, and teacher trainers. You can use these versatile activities one at a time, as the basis of a stand-alone unit on the Sun, or as a comprehensive curriculum. You get to determine the best way for your students to learn a lot while having fun with the Sun.

What is life and where can it exist? What searches are being made to identify conditions for life on other worlds? If extraterrestrial inhabited worlds are found, how can we explore them? In this book, two leading astrophysicists provide an engaging account of where we stand in our quest for habitable environments, in the Solar System and beyond. Starting from basic concepts, the narrative builds scientifically, including more in-depth material as boxed additions to the main text. The authors recount fascinating recent discoveries from space missions and observations using ground-based telescopes, of possible life-related artefacts in Martian meteorites, extrasolar planets, and subsurface oceans on Europa, Titan and Enceladus. They also provide a forward look to future missions. This is an exciting, informative read for anyone interested in the search for habitable and inhabited planets, and an excellent primer for students in astrobiology, habitability, planetary science and astronomy.

How do magnets work? What is the theory of relativity all about? Is light made of waves or particles? And how on earth can a levitating goat teach us about atomic structure? In this age of smartphones, artificial intelligence, supercolliders, supercomputers and other cutting-edge technology, we've lost touch with many of the most basic science concepts that launched our information age. For Bruce Benamren, science is about stories and characters. Why, for instance, did pirates wear eye patches? That's all to do with how the retina processes light. Pirates running down to the gun deck would have no time to let their eyes get used to the dark, so they kept one eye gun-deck ready. Bruce isn't pretending that science isn't tricky, but in simple, maths-free explanations and just-the-good-parts historical recaps, he shows us that the greatest scientific discoveries and theories don't have to remain beyond our grasp. Whether you haven't picked up a test tube since school and feel like you're missing out on something marvellous, or you're a professor who wants to look at the world with starry-eyed wonder again, How to Speak Science is a witty yet deeply revelatory exploration of the essential mysteries of the universe. Because if a goat can explain scientific theory, you can too.

Questions about the origin and nature of Earth and the life on it have long preoccupied human thought and the scientific endeavor. Deciphering the planet's history and processes could improve the ability to predict catastrophes like earthquakes and volcanic eruptions, to manage Earth's resources, and to anticipate changes in climate and geologic processes. At the request of the U.S. Department of Energy, National Aeronautics and Space Administration, National Science Foundation, and U.S. Geological Survey, the National Research Council assembled a committee to propose and explore grand questions in geological and planetary science. This book captures, in a series of questions, the essential scientific challenges that constitute the frontier of Earth science at the start of the 21st century. Table of Contents Front Matter Summary 1 Origins 2 Earth's Interior 3 A Habitable Planet 4 Hazards and Resources References Appendix A: Biographical Sketches of Committee Members Appendix B: Acronyms and Abbreviations

The Moon is accessible to everyone. Because it is easy to observe everywhere, even in big cities, it is a prime target for aspiring astronomers and for those who are merely curious about the night sky. This easy-to-use guide to discovering lunar sites takes the reader through fourteen observing sessions from New Moon to Full Moon. For each evening, the book shows which craters, mountains and other features can be seen, and how to find them. Each photograph shows what the observer actually sees through a telescope, solving the usual difficulties of orientation confronting beginners. Images are shown as they appear through both refracting and reflecting telescopes. Maps printed on the book's front and back flaps show the whole Moon with sites as seen through a refractor, through a Newtonian reflector, or, when turned upside-down, through binoculars. Jean Lacroux has been a columnist for the French astronomy magazine Ciel et Espace for 25 years. He has published four successful amateur astronomy books in French. Christian Legrand is an engineer and amateur astronomer, who has been a passionate lunar observer since the Apollo missions.

With active geysers coating its surface with dazzlingly bright ice crystals, Saturn's large moon Enceladus is one of the most enigmatic worlds in our solar system. Underlying this activity are numerous further discoveries by the Cassini spacecraft, tantalizing us with evidence that Enceladus harbors a subsurface ocean of liquid water. Enceladus is thus newly realized as a forefront candidate among potentially habitable ocean worlds in our own solar system, although it is only one of a family of icy moons orbiting the giant ringed planet, each with its own story. As a new volume in the Space Science Series, Enceladus and the Icy Moons of Saturn brings together nearly eighty of the world's top experts writing more than twenty chapters to set the foundation for what we currently understand, while building the framework for the highest-priority questions to be addressed through ongoing spacecraft exploration. Topics include the physics and processes driving the geologic and geophysical phenomenon of icy worlds, including, but not limited to, ring-moon interactions, interior melting due to tidal heating, ejection and reaccretion of vapor and particulates, ice tectonics, and cryovolcanism. By contextualizing each topic within the profusion of puzzles beckoning from among Saturn's many dozen moons, Enceladus and the Icy Moons of Saturn synthesizes planetary processes on a broad scale to inform and propel both seasoned researchers and students toward achieving new advances in the coming decade and beyond.

An account of the 1976 Viking expedition to Mars describes the spacecraft and its instruments, the journey itself, and the mission's results.