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Astronomy and Cosmology
Asteroids, Meteorites, and Comets, Revised Edition (The Solar System) free download
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alex21s
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Upload Date:
16.07.2010 18:10:11
Author(s):
Facts on File
Publisher:
Facts on File
Date :
2010
Pages :
288
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PDF
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Language :
English
ISBN-10 :
0816076960
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In the 19th century when asteroids were first discovered, the continuum of sizes in the solar system was not understood, because many people thought of the solar system as a Sun orbited by nine planets. However, as observers' abilities to see smaller and smaller bodies in the solar system improves because of better instrumentation, and as scientists continue trying to catalog the number of large asteroidal bodies that someday might collide with the Earth, the solar system is viewed as a collection of objects with a whole continuum of sizes. The Sun is orbited by material that ranges in size from grains of interplanetary dust to the giant Jupiter, and the planets are in turn orbited by moons. In a single, informative reference, "Asteroids, Meteorites, and Comets" discusses the solar system bodies that are not one of the nine planets or their moons. This massive collection of smaller bodies orbiting the Sun includes asteroids in the main asteroid belt as well as throughout the rest of the solar system, comets from both the Kuiper belt and from the much more distant Oort cloud, and the interplanetary dust left in their wakes. This volume describes the discoveries of various asteroids, along with the long centuries of argument over the nature of meteorites and impact craters. The orbits, sizes, and compositions of asteroids are also discussed, along with the correlations scientists have made between meteorite classes and asteroids. Perfect for those interested in understanding the science and history behind the exploration of asteroids, meteorites, and comets, this volume brings a whole new perspective to the study of celestial bodies. Praise for the previous edition: "...offer[s] detail-rich discussions..."—School Library Journal "...a wealth of specific facts and detailed explanations...Teachers and students alike will find the organization and clarity conducive to understanding some difficult concepts, as well as locating specific facts."—VOYA The field of asteroids, meteorites, and comets is moving so quickly that it has affected the whole of planetary science. The great numbers and significant sizes of the bodies found in the distant Kuiper belt have forced a redefinition of what a planet is, effectively demoting Pluto. This has changed the theories of solar system formation and inspired a new generation of space missions to the outer solar system. Asteroids, Meteorites, and Comets, Revised Edition discusses the other solar system bodies outside of the eight planets and their moons. This exciting, full-color volume covers the massive collection of smaller bodies orbiting the Sun, including asteroids in the main asteroid belt and throughout the solar system, comets both from the Kuiper belt and from the much more distant Oort cloud, and the interplanetary dust left in their wakes.
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