Galactic Encounters

Galactic Encounters PDF Author: William Sheehan
Publisher: Springer
ISBN: 0387853472
Category : Science
Languages : en
Pages : 385

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Book Description
Written by William Sheehan, a noted historian of astronomy, and Christopher J. Conselice, a professional astronomer specializing in galaxies in the early universe, this book tells the story of how astronomers have pieced together what is known about the vast and complicated systems of stars and dust known as galaxies. The first galaxies appeared as violently disturbed exotic objects when the Universe was only a few 100 million years old. From that tortured beginning, they have evolved though processes of accretion, merging and star formation into the majestic spirals and massive ellipticals that dominate our local part of the Universe. This of course includes the Milky Way, to which the Sun and Solar System belong; it is our galactic home, and the only galaxy we will ever know from the inside. Sheehan and Conselice show how astronomers’ understanding has grown from the early catalogs of Charles Messier and William Herschel; developed through the pioneering efforts of astronomers like E.E. Barnard, V.M. Slipher, Henrietta Leavitt, Edwin Hubble and W.W. Morgan; and finally is reaching fruition in cutting-edge research with state-of-the-art instruments such as the Hubble Space Telescope that can see back to nearly the beginning of the Universe. By combining archival research that reveals fascinating details about the personalities, rivalries and insights of the astronomers who created extragalactic astronomy with the latest data gleaned from a host of observa tions, the authors provide a view of galaxies – and their place in our understanding of the Universe – as they have never been seen before.

Galactic Encounters

Galactic Encounters PDF Author: William Sheehan
Publisher: Springer
ISBN: 0387853472
Category : Science
Languages : en
Pages : 385

Get Book

Book Description
Written by William Sheehan, a noted historian of astronomy, and Christopher J. Conselice, a professional astronomer specializing in galaxies in the early universe, this book tells the story of how astronomers have pieced together what is known about the vast and complicated systems of stars and dust known as galaxies. The first galaxies appeared as violently disturbed exotic objects when the Universe was only a few 100 million years old. From that tortured beginning, they have evolved though processes of accretion, merging and star formation into the majestic spirals and massive ellipticals that dominate our local part of the Universe. This of course includes the Milky Way, to which the Sun and Solar System belong; it is our galactic home, and the only galaxy we will ever know from the inside. Sheehan and Conselice show how astronomers’ understanding has grown from the early catalogs of Charles Messier and William Herschel; developed through the pioneering efforts of astronomers like E.E. Barnard, V.M. Slipher, Henrietta Leavitt, Edwin Hubble and W.W. Morgan; and finally is reaching fruition in cutting-edge research with state-of-the-art instruments such as the Hubble Space Telescope that can see back to nearly the beginning of the Universe. By combining archival research that reveals fascinating details about the personalities, rivalries and insights of the astronomers who created extragalactic astronomy with the latest data gleaned from a host of observa tions, the authors provide a view of galaxies – and their place in our understanding of the Universe – as they have never been seen before.

Worlds at War

Worlds at War PDF Author: Steven Caldwell
Publisher:
ISBN: 9780850474541
Category :
Languages : en
Pages : 62

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Book Description


Star Quest

Star Quest PDF Author: Steven Caldwell
Publisher:
ISBN: 9780517292242
Category : Science fiction
Languages : en
Pages : 64

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Book Description
Describes the epic voyage of a single ship and its crew toward the very heart of the galaxy.

Aliens in Space

Aliens in Space PDF Author: Steven Caldwell
Publisher: Crescent
ISBN: 9780517292235
Category : Life on other planets
Languages : en
Pages : 62

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Book Description
Shows the forms of life within the Galactic Federation, an area of interstellar space nearly six hundred light years across

space patrol

space patrol  PDF Author: Steven Caldwell
Publisher:
ISBN: 9780517292280
Category :
Languages : en
Pages : 76

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Book Description


Active Galactic Nuclei

Active Galactic Nuclei PDF Author: Julian H. Krolik
Publisher: Princeton University Press
ISBN: 0691227470
Category : Science
Languages : en
Pages : 632

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Book Description
This is the first comprehensive treatment of active galactic nuclei--the cosmic powerhouses at the core of many distant galaxies. The term active galactic nuclei refers to quasars, radio galaxies, Seyfert galaxies, blazars, and related objects, all of which are believed to share a similar central engine--a supermassive black hole many times the mass of the Sun. Astrophysicists have studied these phenomena for the past several decades and have begun to develop a consensus about many of their properties and internal mechanisms. Julian Krolik, one of the world's leading authorities on the subject, sums up leading ideas from across the entire range of research, making this book an invaluable resource for astronomers, physicists interested in applications of the theory of gravitation, and graduate students. Krolik begins by addressing basic questions about active galactic nuclei: What are they? How can they be found? How do they evolve? He assesses the evidence for massive black holes and considers how they generate power by accretion. He discusses X-ray and g-ray emission, radio emission and jets, emission and absorption lines, anisotropic appearance, and the relationship between an active nucleus and its host galaxy. He explores the mysteries of what ignites, fuels, and extinguishes active galactic nuclei, and concludes with a general review of where the field now stands. The book is unique in paying careful attention to relevant physics as well as astronomy, reflecting in part the importance of general relativity to understanding active galactic nuclei. Clear, authoritative, and detailed, this is crucial reading for anyone interested in one of the most dynamic areas of astrophysics today.

The Fantastic Planet

The Fantastic Planet PDF Author: Steven Caldwell
Publisher:
ISBN: 9780517292259
Category : Fiction
Languages : en
Pages : 62

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Book Description
An account of a forced landing on a planet that could not be seen by a three-man crew of the Survey and Preliminary Study Service.

Galaxies: Interactions and Induced Star Formation

Galaxies: Interactions and Induced Star Formation PDF Author: Robert C. Kennicutt Jr.
Publisher: Springer Science & Business Media
ISBN: 3540316302
Category : Science
Languages : en
Pages : 417

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Book Description
This volume contains the written versions of the lectures given at the 26th course of the renowned Saas-Fee series. The book represents a comprehensive and up-to-date review of the field of galaxy interaction. Nowadays, galaxies are no longer seen as immutable objects: they evolve, interact, merge, blaze, and reshape. Dynamic forces can induce powerful stellar activity able to transform the matter composition and morphology of galaxies. The lectures included in this book aim at a better understanding of these remarkable and fascinating phenomena. Though the book is intended for graduate students and young post-docs in astrophysics, it contains more advanced and original material, as well as historical perspectives, which will be of great interest to experts and astronomy teachers also.

Galactic Dynamics

Galactic Dynamics PDF Author: James Binney
Publisher: Princeton University Press
ISBN: 1400828724
Category : Science
Languages : en
Pages : 902

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Book Description
Since it was first published in 1987, Galactic Dynamics has become the most widely used advanced textbook on the structure and dynamics of galaxies and one of the most cited references in astrophysics. Now, in this extensively revised and updated edition, James Binney and Scott Tremaine describe the dramatic recent advances in this subject, making Galactic Dynamics the most authoritative introduction to galactic astrophysics available to advanced undergraduate students, graduate students, and researchers. Every part of the book has been thoroughly overhauled, and many sections have been completely rewritten. Many new topics are covered, including N-body simulation methods, black holes in stellar systems, linear stability and response theory, and galaxy formation in the cosmological context. Binney and Tremaine, two of the world's leading astrophysicists, use the tools of theoretical physics to describe how galaxies and other stellar systems work, succinctly and lucidly explaining theoretical principles and their applications to observational phenomena. They provide readers with an understanding of stellar dynamics at the level needed to reach the frontiers of the subject. This new edition of the classic text is the definitive introduction to the field. ? A complete revision and update of one of the most cited references in astrophysics Provides a comprehensive description of the dynamical structure and evolution of galaxies and other stellar systems Serves as both a graduate textbook and a resource for researchers Includes 20 color illustrations, 205 figures, and more than 200 problems Covers the gravitational N-body problem, hierarchical galaxy formation, galaxy mergers, dark matter, spiral structure, numerical simulations, orbits and chaos, equilibrium and stability of stellar systems, evolution of binary stars and star clusters, and much more Companion volume to Galactic Astronomy, the definitive book on the phenomenology of galaxies and star clusters

Galactic Horizon

Galactic Horizon PDF Author: Subham Khatua
Publisher: Pencil
ISBN: 9356678650
Category : Fiction
Languages : en
Pages : 59

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Book Description
In a vast and boundless multiverse, where the power of thought weaves the fabric of reality, a young astronaut embarks on a cosmic odyssey that will forever change her perception of the universe. In "Galactic Horizon " embark on a captivating adventure that explores the transformative power of collective thought, unity, and the interconnectedness of all beings. Guided by an alien , the young astronaut delves into uncharted dimensions, encountering civilizations that have harnessed the potential of collective consciousness. Together, they venture into realms where thoughts meld, intentions coalesce, and a harmonious symphony of mind.