The purpose of this book is to give a detailed description of the planetary nebulae including the relevant astronomical observations and their interpretation. Considerable attention is given to the evolution of these objects as well as to their physical characteristics. I t is hoped that the book be useful to both advanced research workers and to students with some background in astronomy. In this regard, the book should serve as a text as well as a reference work. The many tables included are expected to be useful for both purposes. The references are generally not included in the text except for historical purposes in an effort to improve readability. References are given at the end of each chapter together with sufficient text to describe their content. No attempt has been made to make the list of references complete; on the contrary it has generally been limited to the most recent literature on the subject which in turn refers to earlier research. Again, exceptions have been made for references of historical interest.
Galaxy reading books are a wonderful collection of fiction, non-fiction, poetry and plays to capture the interest of every child, helping to develop a life-long love of reading. Bear packs a net, a step and a long stick on his bike and rides off into the forest. Is that a bees' nest he has seen? Could he be after a taste of the bees' honey? Be careful, Bear! Reading age: 4-5 years
A new and detailed picture of Mercury is emerging thanks to NASA s MESSENGER mission that spent four years in orbit about the Sun s innermost planet. Comprehensively illustrated by close-up images and other data, the author describes Mercury s landscapes from a geological perspective: from sublimation hollows, to volcanic vents, to lava plains, to giant thrust faults. He considers what its giant core, internal structure and weird composition have to tell us about the formation and evolution of a planet so close to the Sun. This is of special significance in view of the discovery of so many exoplanets in similarly close orbits about their stars. Mercury generates its own magnetic field, like the Earth (but unlike Venus, Mars and the Moon), and the interplay between Mercury s and the Sun s magnetic field affects many processes on its surface and in the rich and diverse exosphere of neutral and charged particles surrounding the planet.
There is much about Mercury that we still don t understand. Accessible to the amateur, but also a handy state-of-the-art digest for students and researchers, the book shows how our knowledge of Mercury developed over the past century of ground-based, fly-by and orbital observations, and looks ahead at the mysteries remaining for future missions to explore."
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