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"This book is directed toward readers who are interested in learning about the Newtonian N-body problem, as well as toward students and experts in this area who are interested in new expositions of past results, previously unpublished research conclusions, and new research problems. As many readers will have no previous knowledge about this fascinating area, each chapter starts with introductory material that is motivated by unanswered research questions, includes some history with an occasional anecdote, provides discussions intended to develop intuition, introduces new technical approaches that answer open questions, and raises unsolved research problems. The first chapter, for instance, starts with simple explanations of the apparent "looping" orbit of Mars and the unexpected "Sunrise, Sunset" behavior as viewed from Mercury, to lead up to the unexplained and weird dynamics exhibited by Saturn's F-ring. The second chapter, which introduces a way to decompose the velocity of the system, is motivated by a seemingly easy but unanswered conjecture involving the dynamics of the system when the system's diameter is a constant. The third chapter, which describes questions about the structure of the rings of Saturn, introduces new and surprisingly simple ways to find configurations of the particles that are "central" to any discussion of the N-body problem, or even about those expanding cracks in a car's windshield. The fourth chapter analyzes collisions, while the last chapter discusses the likelihood of collisions and other events."--Jacket.

Many-body problem --- Collisions (Astrophysics) --- Collisional processes (Astrophysics) --- Impact processes (Astrophysics) --- Astrophysics --- Many-body problem - Congresses. --- Collisions (Astrophysics) - Congresses.

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Meteorites. --- Meteorites, Iron. --- Meteorite craters. --- Collisions (Astrophysics) --- Collisional processes (Astrophysics) --- Impact processes (Astrophysics) --- Astrophysics --- Craters, Meteorite --- Meteor craters --- Meteor impact craters --- Impact craters --- Meteorites --- Iron meteorites --- Irons (Meteorites) --- Metallic meteorites --- Meteoric iron --- Iron --- Siderite --- Meteors

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Galaxy collisions are the key process in building galaxies, triggering the formation of stars and the build-up of heavy elements that allow the formation of planets and solar systems. This book presents the revolutionary research advances achieved in the last decade and lucidly explains the underlying dynamical processes. Galaxy Collisions takes a comprehensive trip through the visually spectacular world of galaxy collisions; investigates the interactions of stars, gas clouds, and dark matter in galaxy collisions; uses analogies and metaphors to help comprehend the bizarre world of galaxies; presents recent research results to enhance the understanding of galaxy formation and evolution; includes discoveries of minor collisions within our own group of galaxies; shows how a galaxy collision might affect a solar system, or a planet like ours.

Collisions (Astrophysics). --- Galaxies. --- Galactic dynamics --- Collisions (Astrophysics) --- Galaxies --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Astrophysics --- Astronomy - General --- Astrophysics. --- Astronomical physics --- Collisional processes (Astrophysics) --- Impact processes (Astrophysics) --- Popular works. --- Gravitation. --- Astronomy. --- Cosmology. --- Observations, Astronomical. --- Astronomy --- Popular Science. --- Popular Science in Astronomy. --- Astronomy, Observations and Techniques. --- Astronomy, Astrophysics and Cosmology. --- Classical and Quantum Gravitation, Relativity Theory. --- Observations. --- Cosmic physics --- Physics --- Astronomy—Observations. --- Field theory (Physics) --- Matter --- Antigravity --- Centrifugal force --- Relativity (Physics) --- Astronomical observations --- Observations, Astronomical --- Properties

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"Cosmic Threats : A Planetary Perspective calls for the progressive creation of supra-national institutions intended to protect life on Earth against natural threats, be these terrestrial (pandemics, super-volcanoes, major earthquakes...) or celestial (comets, asteroids, meteor storms...). The protection proffered would need to be pre-emptive though also responsive, reducing the number of adverse events but also their specific consequences. Rancid though the world scene currently looks, this may actually be a good time to look towards a planetary security programme that can build up over a century or more. It would need special international institutions that are sufficiently integrated to cope with the celestial and terrestrial contingencies anticipated yet not so much a class apart as to be a law unto themselves, a military regime able to ride roughshod over general world opinion. Such an holistic approach to planetary security might prove to be a definitive substitute for war between nations. Professor Brown comes to such questions from a broad career background. His lead qualifications are a Masters degree from Oxford in Modern History and a Doctorate of Science from Birmingham (UK) in Applied Geophysics. He has been a naval meteorologist; staff college instructor; part-time but pro-active as a defence correspondent for several of the West's leading journals; and political consultant. From 1980 to 1986, he was Chairman of the Council for Arms Control. From 1993 to 1997 he worked half-time in the Sensors and Electronic Systems directorate of Britain's Ministry of Defence. This was as the Academic Consultant in a small task force specifically created to advise the government of the day apropos what British policy to Strategic Ballistic Missile Defence should be"--Provided by publisher.

Emergency management --- Disaster relief --- Natural disasters --- Collisions (Astrophysics) --- Security, International. --- Defensive (Military science) --- Attack and defense (Military science) --- Defenses (Military science) --- Defensive (Military strategy) --- Military art and science --- Collective security --- International security --- International relations --- Disarmament --- International organization --- Peace --- Collisional processes (Astrophysics) --- Impact processes (Astrophysics) --- Astrophysics --- Natural calamities --- Disasters --- Disaster assistance --- Emergency assistance in disasters --- Emergency relief --- Human services --- Consequence management (Emergency management) --- Disaster planning --- Disaster preparedness --- Disaster prevention --- Emergencies --- Emergency planning --- Emergency preparedness --- Management --- Public safety --- First responders --- International cooperation. --- Government policy. --- Planning --- Preparedness --- Prevention --- Security, International --- International cooperation --- Government policy --- E-books