Galaxies in the Universe


Book Description

This extensively illustrated book presents the astrophysics of galaxies since their beginnings in the early Universe. It has been thoroughly revised to take into account the most recent observational data, and recent discoveries such as dark energy. There are new sections on galaxy clusters, gamma ray bursts and supermassive black holes. The authors explore the basic properties of stars and the Milky Way before working out towards nearby galaxies and the distant Universe. They discuss the structures of galaxies and how galaxies have developed, and relate this to the evolution of the Universe. The book also examines ways of observing galaxies across the whole electromagnetic spectrum, and explores dark matter and its gravitational pull on matter and light. This book is self-contained and includes several homework problems with hints. It is ideal for advanced undergraduate students in astronomy and astrophysics.




The First Galaxies in the Universe


Book Description

This book provides a comprehensive, self-contained introduction to one of the most exciting frontiers in astrophysics today: the quest to understand how the oldest and most distant galaxies in our universe first formed. Until now, most research on this question has been theoretical, but the next few years will bring about a new generation of large telescopes that promise to supply a flood of data about the infant universe during its first billion years after the big bang. This book bridges the gap between theory and observation. It is an invaluable reference for students and researchers on early galaxies. The First Galaxies in the Universe starts from basic physical principles before moving on to more advanced material. Topics include the gravitational growth of structure, the intergalactic medium, the formation and evolution of the first stars and black holes, feedback and galaxy evolution, reionization, 21-cm cosmology, and more. Provides a comprehensive introduction to this exciting frontier in astrophysics Begins from first principles Covers advanced topics such as the first stars and 21-cm cosmology Prepares students for research using the next generation of large telescopes Discusses many open questions to be explored in the coming decade




The Most Interesting Galaxies in the Universe


Book Description

Prior to the 1920s it was generally thought, with a few exceptions, that our galaxy, the Milky Way, was the entire Universe. Based on the work of Henrietta Leavitt with Cepheid variables, astronomer Edwin Hubble was able to determine that the Andromeda Galaxy and others had to lie outside our own. Moreover, based on the work of Vesto Slipher, involving the redshifts of these galaxies, Hubble was able to determine that the Universe was not static, as had been previously thought, but expanding. The number of galaxies has also been expanding, with estimates varying from 100 billion to 2 trillion. While every galaxy in the Universe is interesting just by its very fact of being, the author has selected 51 of those that possess some unusual qualities that make them of some particular interest. These galaxies have complex evolutionary histories, with some having supermassive black holes at their core, others are powerful radio sources, a very few are relatively nearby and even visible to the naked eye, whereas the light from one recent discovery has been travelling for the past 13.4 billion years to show us its infancy, and from a time when the Universe was in its infancy. And in spite of the vastness of the Universe, some galaxies are colliding with others, embraced in a graceful gravitational dance. Indeed, as the Andromeda Galaxy is heading towards us, a similar fate awaits our Milky Way. When looking at a modern image of a galaxy, one is in awe at the shear wondrous nature of such a magnificent creation, with its boundless secrets that it is keeping from us, its endless possibilities for harboring alien civilizations, and we remain left with the ultimate knowledge that we are connected to its glory.




Planets, Stars, and Galaxies


Book Description

The latest discoveries about our universe to keep readers updated on the latest developments in space.




Galaxies


Book Description

Tour the incredible scope of the cosmos as we know it with the editor in chief of Astronomy, featuring jaw-dropping illustrations and full-color photography from the magazine’s archives, much of it never before published. “The natural history of the galaxies is majestic and deserves its own David Attenborough. In David Eicher, it may have just found him.”—Richard Dawkins Journey to the edges of our galaxy and beyond with one of the most widely recognized astronomy experts as your guide. Delve into the history of stargazing and space observation, learn how black holes power galaxies, and understand the classification of the different galaxy types. This illuminating book—with artful illustrations and never-before-seen space photography—will open your mind to the wonders of the universe that await.




How Did the First Stars and Galaxies Form?


Book Description

A concise introduction to cosmology and how light first emerged in the universe Though astrophysicists have developed a theoretical framework for understanding how the first stars and galaxies formed, only now are we able to begin testing those theories with actual observations of the very distant, early universe. We are entering a new and exciting era of discovery that will advance the frontiers of knowledge, and this book couldn't be more timely. It covers all the basic concepts in cosmology, drawing on insights from an astronomer who has pioneered much of this research over the past two decades. Abraham Loeb starts from first principles, tracing the theoretical foundations of cosmology and carefully explaining the physics behind them. Topics include the gravitational growth of perturbations in an expanding universe, the abundance and properties of dark matter halos and galaxies, reionization, the observational methods used to detect the earliest galaxies and probe the diffuse gas between them—and much more. Cosmology seeks to solve the fundamental mystery of our cosmic origins. This book offers a succinct and accessible primer at a time when breathtaking technological advances promise a wealth of new observational data on the first stars and galaxies. Provides a concise introduction to cosmology Covers all the basic concepts Gives an overview of the gravitational growth of perturbations in an expanding universe Explains the process of reionization Describes the observational methods used to detect the earliest galaxies




Galaxies


Book Description

A sweeping tour of the galaxies, from our Milky Way to infinity. Galaxies are glittering islands in the Universe, interwoven in the web of Dark Matter. From Earth's mountaintops enormous telescopes peer deep beyond the Milky Way, while space telescopes locate majestic images, and through seemingly miraculous technology, capture them for us to look at and learn with amazement. Featuring the most recent, best, and even startling images with detailed captions highlighting accessible text, Galaxies shows the restless universe beyond our atmosphere. Photographs are from more than 30 of the world's largest ground-based telescopes, including the largest to date, the European Southern Observatory's Very Large Telescope in Chile. Images are also featured from the Hubble Space Telescope, which has continued to operate long past its expected life and to astound and astonish stargazers worldwide. Here is the glory of the galaxies: The Milky Way, our Galaxy -- Stellar Nurseries, Stars and Planets, When Stars Die; In the Heart of the Milky Way; Mapping the Milky Way Our Galactic Neighborhood -- The Magellanic Clouds; the Andromeda Galaxy; The Triangulum Galaxy; Satellite Galaxies How far away are the stars? The Gallery of Galaxies -- Spiral Galaxies; Barred Spiral Galaxies; Elliptical, Lenticular and Dwarf Galaxies; Dark Matter; The Expanding Universe Monsters and Black Holes -- Twisting Galaxies; Colliding Galaxies; Active Galactic Nuclei and Quasars; Supermassive Black Holes; Giant Eyes for the Sky Clusters of Galaxies -- Cosmic Clusters; Gravitational Lensing; Dark Forces; The Large-scale Structure of the Universe; Looking Back in Time Birth and Evolution -- At the Edge of Space and Time; The First Galaxies; The Beginning of the Universe; Dark Energy; Cosmology.




Beyond the Galaxy


Book Description

"A look up at the night sky reveals a treasury of wonders. Even to the naked eye, the Moon, stars, planets, the Milky Way and even a few star clusters and nebulae illuminate the heavens. For millennia, humans struggled to make sense of what's out there in the Universe, from all we can see to that which lies beyond the limits of even our most powerful telescopes. Beyond the Galaxy traces our journey from an ancient, Earth-centered Universe all the way to our modern, 21st century understanding of the cosmos. Touching on not only what we know but also how we know it, Ethan Siegel takes us to the very frontiers of modern astrophysics and cosmology, from the birth of our Universe to its ultimate fate, and everything in between."--




Galaxies


Book Description

On the darkest of nights, the white sparkle spanning the sky provides a glimpse at the far reaches of the Milky Way galaxy. But there are trillions more just in the observable universe! This title allows readers to explore these collections of stars, planets, and space debris that span across light-years of space.




Galaxies, Galaxies! (Third Edition)


Book Description

Learn about the newest discoveries in the Milky Way and beyond in this updated edition from nonfiction master Gail Gibbons. Planet Earth is in the Milky Way Galaxy, the cloudy band of light that stretches clear across the night sky. How many galaxies are there in the universe? For years astronomers thought that the Milky Way was the universe. Now we know that there are billions of them. Gail Gibbons takes the reader on a journey light-years away. This updated edition vetted by an expert introduces young readers to our own galaxy the Milky Way and beyond. Learn how ancient people invented the telescope and began studying the Milky Way to the modern technology astronomers use to study other galaxies. Gail Gibbon’s easy-to-read text and clearly labeled illustrations welcomes young readers to learn how telescopes work, about the different types of galaxies, how many galaxies we know of today, and more.