Comets II situates comet science in the global context of astrophysics for the first time by beginning with a series of chapters that describe the connection between stars and planets. It continues with a presentation of the formation and evolution of planetary systems, enabling the reader to clearly see the key role played in our own solar system by the icy planetesimals that were the seeds of the giant planets and transneptunian objects.
The book presents the key results obtained during the 1990s, in particular those collected during the apparition of the exceptional comets C/Hyakutake and C/Hale-Bopp in 1996-1997. The latest results obtained from the in situ exploration of comets P/Borrelly and P/Wild 2 are also discussed in detail.
Each topic of is designed to be accessible to students or young researchers looking for basic, yet detailed, complete and accurate, information on comet science. With its emphasis on the origin of theories and the future of research, Comets II will enable scientists to make connections across disciplinary boundaries and will set the stage for discovery and new understanding in the coming years.
We are connected to distant space and time not only by our imaginations but also through a common cosmic heritage. Emerging now from modern science is a unified scenario of the cosmos, including ourselves as sentient beings, based on the time-honored concept of change. From galaxies to snowflakes, from stars and planets to life itself, we are beginning to identify an underlying ubiquitous pattern penetrating the fabric of all the natural sciences--a sweepingly encompassing view of the order and structure of every known class of object in our richly endowed universe.
This is the subject of Eric Chaisson's new book. In Cosmic Evolution Chaisson addresses some of the most basic issues we can contemplate: the origin of matter and the origin of life, and the ways matter, life, and radiation interact and change with time. Guided by notions of beauty and symmetry, by the search for simplicity and elegance, by the ambition to explain the widest range of phenomena with the fewest possible principles, Chaisson designs for us an expansive yet intricate model depicting the origin and evolution of all material structures. He shows us that neither new science nor appeals to nonscience are needed to understand the impressive hierarchy of the cosmic evolutionary story, from quark to quasar, from microbe to mind.
Day in and day out, cosmic rays from the far reaches of space pass through our bodies, yet modern astrophysics has still to unlock all their secrets. Though many details about cosmic rays remain enigmatic, next to electromagnetic radiation they convey more information about the universe beyond the solar system than any other source. They provide us with information about energetic explosions elsewhere in our galaxy and perhaps beyond, and they tell us a great deal about the contents of our own galaxy, through which they pass in reaching us. Illustrating the beautiful symmetry of nature, they shed light on the tiny dimensions of atomic nuclei as well as the immense scale of galaxies.
Friedlander's engaging tale of this peculiar rain of charged particles begins with their discovery early in this century and goes on to describe impressive attempts by a special breed of scientists--sometimes engaging in swashbuckling science at its most adventurous--to fill in the gaps in our knowledge. The central question is: Where do cosmic rays come from? Some scientists maintain that supernovas, much more massive than our sun, are largely responsible for generating them. Most of them probably originate within our Milky Way galaxy, but a few (the most energetic ones) appear to come from a much greater distance. But we still have much to learn about their origin.
The book describes scientists studying cosmic rays by all sorts of methods: satellites, space probes, high-altitude balloons and airplanes-even giant detectors two miles beneath the earth's surface. Their ingenious investigations have yielded startling insights about nature--as well as an inordinately large number of Nobel Prizes. Michael Friedlander, for many years a principal researcher of cosmic radiation, masterfully portrays how a perfect marriage between pure and applied science has forged new understandings of our physical world. This uncommonly lucid history, richly illustrated with more than 50 drawings and photographs, touches the astronomer within each of us who yearns to explore one of the great mysteries of the universe.
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