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Books > Science & Mathematics > Astronomy, space & time > Solar system > General

Plasma Astrophysics and Cosmology - The Second IEEE International Workshop, Princeton, New Jersey, May 10-12, 1993 (Paperback,... Plasma Astrophysics and Cosmology - The Second IEEE International Workshop, Princeton, New Jersey, May 10-12, 1993 (Paperback, Softcover reprint of the original 1st ed. 1995)
Anthony L. Peratt
R1,529 Discovery Miles 15 290 Ships in 10 - 15 working days

Today many scientists recognize plasma as the key element in understanding new observations in interplanetary and interstellar space, in stars, galaxies, and clusters of galaxies, and throughout the observable universe. Plasma astrophysics and cosmology, as a unified discipline, cover topics such as the large scale structure and filamentation of the universe; the microwave background; the formation of galaxies and magnetic fields; active galactic nuclei and quasars; the origin and abundance of light elements; star formation and the evolution of solar systems; redshift periodicities and anomalous redshifts; general relativity; electric fields; the acceleration of charged particles to high energies; and cosmic rays. Plasma Astrophysics and Cosmology is an update on the observations made in radio, optical, and high-energy astrophysics, especially over the last decade, and addresses the paradigm changing discoveries made by the planetary probes and satellites, radio telescopes, and the Hubble space telescope. Over twenty contributors, all distinguished plasma scientists, present an entirely new picture of the nature of our plasma universe with articles ranging from the popular level to advanced topics in plasma cosmology.

Primate Brain Evolution - Methods and Concepts (Paperback, Softcover reprint of the original 1st ed. 1982): Este Armstrong,... Primate Brain Evolution - Methods and Concepts (Paperback, Softcover reprint of the original 1st ed. 1982)
Este Armstrong, Dean Falk
R2,931 Discovery Miles 29 310 Ships in 10 - 15 working days

Given the past decade's explosion of neurobiological and paleontologi cal data and their increasingly sophisticated analyses, interdisciplinary syntheses between these two broad disciplines are of value and interest to many different scientists. The collected papers of this volume will appeal to students of primate and hominid evolution, neuroscientists, sociobiolo gists, and other behaviorists who seek a better understanding of the substrates of primate, including human, behavior. Each species of living primates represents an endpoint in evolution, but comparative neurologists can produce approximate evolutionary se quences by careful analyses of representative series. Because nervous tissue does not fossilize, only a comparison of structures and functions among extant primates can be used to investigate the fine details of primate bra~n evolution. Paleoneurologists, who directly examine the fossil record via endocasts or cranial capacities of fossil skulls, can best provide information about gross details, such as changes in brain size or sulcal patterns, and determine when they occurred. Physical anthropologists and paleontologists have traditionally relied more on paleoneurology, whereas neuroscientists and psychologists have relied more on comparative neurology. This division has been a detriment to the advancement of these fields and to the conceptual bases of primate brain evolution. Both methods are important and a synthesis is desirable. To this end, two symposia were held in 1980--one at the meeting of the American Association of Physical Anthro pologists in Niagara Falls, U. S. A. , and one at the precongressional meeting of the International Primatological Society in Torino, Italy.

Introduction to Earth and Planetary System Science - New View of Earth, Planets and Humans (Paperback, 2012): Naotatsu Shikazono Introduction to Earth and Planetary System Science - New View of Earth, Planets and Humans (Paperback, 2012)
Naotatsu Shikazono
R1,893 Discovery Miles 18 930 Ships in 10 - 15 working days

This book presents basic information on material science (geochemistry, geophysics, geology, mineralogy, etc.), interaction between subsystem consisting earth system (atmosphere, hydrosphere, litho (geo) sphere, biosphere, humans) and in earth-planet system and evolution of earth-planetary system. The nature-humans interactions are described and new view on earth, planets and humans (integration of anthropocentrism and naturecentrism) are presented.

Jets from Young Stars IV - From Models to Observations and Experiments (Paperback, 2010 ed.): Paulo Jorge Valente Garcia, Joao... Jets from Young Stars IV - From Models to Observations and Experiments (Paperback, 2010 ed.)
Paulo Jorge Valente Garcia, Joao Miguel Ferreira
R1,510 Discovery Miles 15 100 Ships in 10 - 15 working days

Astronomical jets are key astrophysical phenomena observed in gamma-ray bursts, active galactic nuclei or young stars. Research on them has largely occurred within the domains of astronomical observations, astrophysical modeling and numerical simulations, but the recent advent of high energy density facilities has added experimental control to jet studies. Front-line research on jet launching and collimation requires a highly interdisciplinary approach and an elevated level of sophistication. Bridging the gaps between pure magnetohydrodynamics, thermo-chemical evolution, high angular resolution spectro-imaging and laboratory experiments is no small matter. This volume strives to bridge those very gaps. It offers a series of lectures which, taken as whole, act as a thorough reference for the foundations of this discipline. These lectures address the following: * laboratory jets physics from laser and z-pinch plasma experiments, * the magnetohydrodynamic theory of relativistic and non-relativistic stationary jets, * heating mechanisms in magnetohydrodynamic jets, from the solar magnetic reconnection to the molecular shock heating perspectives, * atomic and molecular microphysics of jet shocked material. In addition to the lectures, the book offers, in closing, a presentation of a series of observational diagnostics, thus allowing for the recovery of basic physical quantities from jet emission lines.

Proceedings of the Third UN/ESA/NASA Workshop on the International Heliophysical Year 2007 and Basic Space Science - National... Proceedings of the Third UN/ESA/NASA Workshop on the International Heliophysical Year 2007 and Basic Space Science - National Astronomical Observatory of Japan (Paperback, 2010 ed.)
Hans J. Haubold, A.M. Mathai
R5,590 Discovery Miles 55 900 Ships in 10 - 15 working days

This book represents Volume II of the Proceedings of the UN/ESA/NASA Workshop on the International Heliophysical Year 2007 and Basic Space Science, hosted by the National Astronomical Observatory of Japan, Tokyo, 18 - 22 June, 2007. It covers two programme topics explored in this and past workshops of this nature: (i) non-extensive statistical mechanics as applicable to astrophysics, addressing q-distribution, fractional reaction and diffusion, and the reaction coefficient, as well as the Mittag-Leffler function and (ii) the TRIPOD concept, developed for astronomical telescope facilities. The companion publication, Volume I of the proceedings of this workshop, is a special issue in the journal Earth, Moon, and Planets, Volume 104, Numbers 1-4, April 2009.

Dynamics and Astrometry of Natural and Artificial Celestial Bodies - Proceedings of IAU Colloquium 165 Poznan, Poland July 1 -... Dynamics and Astrometry of Natural and Artificial Celestial Bodies - Proceedings of IAU Colloquium 165 Poznan, Poland July 1 - 5, 1996 (Paperback, Softcover reprint of the original 1st ed. 1997)
I.M. Wytrzyszczak, J.H. Lieske, R.A. Feldman
R6,471 Discovery Miles 64 710 Ships in 10 - 15 working days

IAU Colloquium 165, Dynamics and Astrometry of Natural and Artificial Celestial Bodies, was held in Poznan, Poland, in July 1996, bringing together over 200 scientists from 27 countries who discussed their work in 179 oral and poster presentations. The present volume contains 83 of the papers presented at the meeting. The meeting brought together specialists from diverse fields who focused on the very close collaboration between dynamics and astrometry, where one discipline contributes to the progress of the other. The oral sessions were organized into general categories pertaining to: solar system dynamics; new observational techniques, catalogues, and astrometry; dynamics and observational problems of artificial satellites and space debris; rotation of solar system objects; reference systems and astronomical standards; new mathematical techniques; and three all-day poster sessions. This volume is divided into seven parts, comprising 83 contributions, a list of participants and an index.

Exobiology: Matter, Energy, and Information in the Origin and Evolution of Life in the Universe - Proceedings of the Fifth... Exobiology: Matter, Energy, and Information in the Origin and Evolution of Life in the Universe - Proceedings of the Fifth Trieste Conference on Chemical Evolution: An Abdus Salam Memorial Trieste, Italy, 22-26 September 1997 (Paperback, Softcover reprint of the original 1st ed. 1998)
Julian Chela-Flores, Francois Raulin
R5,386 Discovery Miles 53 860 Ships in 12 - 17 working days

Leading researchers in the area of the origin, evolution and distribution of life in the universe contributed to Exobiology: Matter, Energy, and Information in the Origin and Evolution of Life in the Universe. This volume provides a review of this interdisciplinary field. In 50 chapters many aspects that contribute to exobiology are reviewed by 90 authors. These include: historical perspective of biological evolution; cultural aspects of exobiology, cosmic, chemical and biological evolution, molecular biology, geochronology, biogeochemistry, biogeology, and planetology. Some of the current missions are discussed. Other subjects in the frontier of exobiology are reviewed, such as the search for planets outside the solar system, and the possible manifestation of intelligence in those new potential environments. The SETI research effort is well represented in this general overview of exobiology. This book is the proceedings of the Fifth Trieste Conference on Chemical Evolution that took place in September 1997. The volume is dedicated to the memory of Nobel Laureate Abdus Salam who suggested the initiation of the Trieste conferences on chemical evolution and the origin of life. Audience: Graduate students and researchers in the many areas of basic, earth, and life sciences that contribute to the study of chemical evolution and the origin, evolution and distribution of life in the universe.

Astrophysics III: The Solar System / Astrophysik III: Das Sonnensystem (English, German, Paperback, Softcover reprint of the... Astrophysics III: The Solar System / Astrophysik III: Das Sonnensystem (English, German, Paperback, Softcover reprint of the original 1st ed. 1959)
S. Flugge
R3,008 Discovery Miles 30 080 Ships in 10 - 15 working days
Structure and Development of Solar Active Regions (Paperback, Softcover reprint of the original 1st ed. 1968): K O Kiepenheuer Structure and Development of Solar Active Regions (Paperback, Softcover reprint of the original 1st ed. 1968)
K O Kiepenheuer
R1,649 Discovery Miles 16 490 Ships in 10 - 15 working days

K. O. KIEPENHEUER ( Fraunhofer Institut, Freiburg i. Br., Germany) The present symposium, to my knowledge the largest ever held in the field of solar research (170 astronomers from 21 countries) was held in the building of the Hun garian Academy of Sciences in Budapest from September 4 to 8, 1967. It was the 35th symposium organized and sponsored by the International Astronomical Union. The majority of participants were financedfrom national sources. The Organizing Commit tee consisted of K. O. Kiepenheuer (Chairman), L. Davis, L. Dezso (Local Organizer), A.D. Fokker, R. Michard, A.B. Severny, H.J. Smith, Z. Svestka, and H. Tanaka. In order to ensure prompt publication, the manuscripts had to be supplied by the authors 1 month after the meeting. The discussions have been recorded on tape. Their reproduction in this book, however, is based almost completely on the contributors' writing down their comments and questions on the spot. Two special projects have been reported and discussed shortly during the sym posium: The world wide project 'Cooperative Study of Solar Active Regions' (CSSAR) organized by Dr. R. Michard, under the auspices of the IAU, which has put at the disposal of our solar community a precious observing material on Active Regions over a period of 6 months."

The Structure of the Quiet Photosphere and the Low Chromosphere - Proceedings of the 'Bilderberg' Conference Held... The Structure of the Quiet Photosphere and the Low Chromosphere - Proceedings of the 'Bilderberg' Conference Held Near Arnhem, Holland, April 17-21, 1967 (Paperback, Softcover reprint of the original 1st ed. 1968)
C. De Jager
R4,363 Discovery Miles 43 630 Ships in 10 - 15 working days

From 17 to 21 April 1967 a Study Week was held in the hotel 'De Bilderberg' near Arnhem, Holland, with the purpose to establish a new, and if possible, generally acceptable working model for the quiet parts of the solar photosphere and low chromosphere. The organizers of the conference hoped that even if this latter goal appeared too far to be reached, such a meeting would still be useful, if only for enumerating the crucial problems in solar photospheric research, and for defining future subjects of research. About twenty solar physicists from outside the Netherlands participated in the Study Week, while some others, though prevented from actively attending, sub mitted their comments before the meeting. The two above-mentioned goals were reached: a working model could be estab lished; yet it became clear that not everyone would agree about this model, and it became obvious too that future research is strongly needed, in particular in the field of line formation (coherence, or non-coherence; local thermal equilibrium), while also the motion field of the photosphere and chromosphere is insufficiently known, and its influence on the formation of spectral lines hardly understood."

Stability of the Solar System and Its Minor Natural and Artificial Bodies (Paperback, Softcover reprint of the original 1st ed.... Stability of the Solar System and Its Minor Natural and Artificial Bodies (Paperback, Softcover reprint of the original 1st ed. 1985)
V.G. Szebehely
R5,667 Discovery Miles 56 670 Ships in 10 - 15 working days

It is this editor's distinct pleasure to offer to the readership the text of the lectures presented at our recent NATO Advanced Study Institute held in Cortina d'Ampezzo, Italy between August 6 and August 17, 1984. The invited lectures are printed in their entirety while the seminar contributions are presented as abstracts. Our Advanced Study Institutes were originated in 1972 and the reader, familiar with periodic phenomena, so important in Celestial Mechanics, will easily establish the fact that this Institute was our fifth one in the series. We dedicated the Institute to the subject of stability which itself is a humbling experience since it encompasses all fields of sciences and it is a basic element of human culture. The many definitions in existence and their practical applications could easily fill another volume. It is known in this field that it is easy to deliver lectures or write papers on stability as long as the definition of stability is carefully avoided. On the other hand, if one selects a definition, he might be criticized for using that definition and not another one. In this volume we carefully defined the specific concept of stability used in every lecture. If the reader wishes to introduce other definitions we feel that he should be entirely free and we encourage him to do so. It is also known that certain sta bility definitions and concepts are more applicable to certain given fields than to others."

Magnetic Reconnection - Theoretical and Observational Perspectives (Hardcover, 2012 ed.): William Lewis Magnetic Reconnection - Theoretical and Observational Perspectives (Hardcover, 2012 ed.)
William Lewis; Edited by Spiro Antiochos, James Drake
R2,888 Discovery Miles 28 880 Ships in 10 - 15 working days

This volume covers different aspects of recent theoretical and observational work on magnetic reconnection, a fundamental plasma-physical process by which energy stored in magnetic field is converted, often explosively, into heat and kinetic energy. This collection of papers from the fields of solar and space physics, astrophysics, and laboratory plasma physics is especially timely in view of NASA's upcoming Magnetospheric Multiscale mission, which will use Earth's magetosphere as a laboratory to test, through in-situ measurement of the plasma, energetic particles, and electric and magnetic fields, the various and sometimes competing models and theories of magnetic reconnection.
This volume is aimed at researchers in solar physics, magnetospheric physics and plasma physics.
Previously published in Space Science Reviews journal, Vol. 160/1-4, 2011.

Planetary Systems: Formation, Evolution, and Detection - Proceedings of the First International Conference, held in Pasadena,... Planetary Systems: Formation, Evolution, and Detection - Proceedings of the First International Conference, held in Pasadena, California on December 8-10, 1992 (Paperback, Softcover reprint of the original 1st ed. 1994)
Bernard F. Burke, Jurgen H. Rahe, Elizabeth E. Roettger
R1,591 Discovery Miles 15 910 Ships in 10 - 15 working days

Are there other planetary systems like ours? Other planets like ours? Is there life elsewhere in the Universe?' So asks Dr. Lew Allen Jr. in the Foreword. In December of 1992, theorists, observers, and instrument builders gathered at the California Institute of Technology to discuss the search for answers to these questions. The International Conference, entitled Planetary Systems: Formation, Evolution, and Detection' and supported through NASA's newly formed TOPS (Toward Other Planetary Systems) program, was the first of a series of conferences uniting researchers across disciplines and political boundaries to share thoughts and information on planetary systems. The conference was sponsored by NASA, hosted by JPL at Caltech, and endorsed by the 1992 International Space Year Association. These proceedings include discussions of topics ranging from stellar, disk, and planetary formation to new ways of searching for other stellar systems containing planets. The authors represent a wide range of nationalities, disciplines, and points of view. The second international conference took place in December of 1993.

Hormonal Regulation of Plant Growth and Development - Vol 1 (Paperback, Softcover reprint of the original 1st ed. 1985): S.S.... Hormonal Regulation of Plant Growth and Development - Vol 1 (Paperback, Softcover reprint of the original 1st ed. 1985)
S.S. Purohit
R5,664 Discovery Miles 56 640 Ships in 10 - 15 working days

Plant hormone research is the favorite topic of physiologists. Past three decades have witnessed that this subject has received much attention. The inquisitive nature of human mind has pumped much in literature on this subject and this volume is the product of such minds. In the following pages various hormonal-controlled physiological processes like, flowering, seed dormancy and germination, enzyme secretion, senes cence, ion transport, fruit ripening, root growth and development, thig momorphogenesis and tendril thigmonasty have been included. The volume also contains a review paper on 'Growth Regulating Activity of Penicillin in Higher Plants' and has been presented for the first time. The vast contents of each review paper have been written by erudite scholars who have admirably carried out their evangelic task to make the text up TO date. This volume, I am sure, would stimulate the appetite of researchers of peripheral disciplines of botany and agricultural sciences and they will continue to enjoy the fun and adventures of plant hormone research. Save one. my most outstanding debts are due to the rich array of the contributors and other plant physiologists specially to Prof. Thomas Gaspar (Belgium), Prof. E. E. Goldschmidt (Isreal), Prof. H. Greppin (Switzerland), Dr. K. Gurumurti (India), Prof. M. A. Hall (U. K. ), Prof. H. Harada (Japan), Dr. M. Kaminek (Czechoslovakia), Dr. J. L. Karm oker (BangIa Desh), Prof. Peter B. Kaufman (U. S. A. ), Dr. V. I. Kefeli . / (U. S. S. R. ), Dr. M. Kutaoek (Czechoslovakia), Prof. S."

Surge Tectonics: A New Hypothesis of Global Geodynamics (Paperback, Softcover reprint of the original 1st ed. 1996): Donna... Surge Tectonics: A New Hypothesis of Global Geodynamics (Paperback, Softcover reprint of the original 1st ed. 1996)
Donna Meyerhoff Hull; Arthur A. Meyerhoff, I. Taner, A.E.L. Morris, W.B. Agocs, …
R4,374 Discovery Miles 43 740 Ships in 10 - 15 working days

TECTONlCS AND PHYSICS Geology, although rooted in the laws of physics, rarely has been taught in a manner designed to stress the relations between the laws and theorems of physics and the postulates of geology. The same is true of geophysics, whose specialties (seismology, gravimetIy, magnetics, magnetotellurics) deal only with the laws that govern them, and not with those that govern geology's postulates. The branch of geology and geophysics called tectonophysics is not a formalized discipline or subdiscipline, and, therefore, has no formal laws or theorems of its own. Although many recent books claim to be textbooks in tectonophysics, they are not; they are books designed to explain one hypothesis, just as the present book is designed to explain one hypothesis. The textbook that comes closest to being a textbook of tectonophysics is Peter 1. Wyllie's (1971) book, The Dynamic Earth. Teachers, students, and practitioners of geology since the very beginning of earth science teaching have avoided the development of a rigorous (but not rigid) scientific approach to tectonics, largely because we earth scientists have not fully understood the origin of the features with which we are dealing. This fact is not at all surprising when one considers that the database for hypotheses and theories of tectonics, particularly before 1960, has been limited to a small part of the exposed land area on the Earth's surface.

Catastrophic Events Caused by Cosmic Objects (Paperback, Softcover reprint of hardcover 1st ed. 2008): Vitaly Adushkin, Ivan... Catastrophic Events Caused by Cosmic Objects (Paperback, Softcover reprint of hardcover 1st ed. 2008)
Vitaly Adushkin, Ivan Nemchinov
R2,909 Discovery Miles 29 090 Ships in 10 - 15 working days

An asteroid or comet will inevitably strike the Earth some day, and potentially cause great destruction. This volume considers hazards due to collisions with cosmic objects, particularly in light of recent investigations of impacts by the authors. Each chapter, written by an expert, contains an overview of an aspect and new findings in the field. Coverage describes and numerically estimates the main hazardous effects.

Observations Concerning the Planet Venus (Paperback, Softcover reprint of the original 1st ed. 1996): Francesco Bianchini Observations Concerning the Planet Venus (Paperback, Softcover reprint of the original 1st ed. 1996)
Francesco Bianchini; Translated by S. Beaumont, P. Fay
R2,851 Discovery Miles 28 510 Ships in 10 - 15 working days

In the early part of the eighteenth century, Francesco Bianchini of Verona turned his primitive telescope - a refractor of only a few centimetres aperture but with an enormous focal length of around 20 metres - on the planet Venus. He recorded some of the first telescopic observations of Venus, outstanding in terms of care and accuracy. Bianchini determined the parallax of the planet, estimated the period of rotation, and carefully mapped surface features (although we now know that only Venus' atmospheric clouds can be seen in visible light).
Peter Fay and Sally Beaumont have translated this historic document into English, keeping as much as possible of the flavour and appearance of the original 1728 publication. As part of his research, Peter Fay constructed and tested a telescope similar to the one Bianchini had used. The results are given as an appendix to the text. Astronomers and historians alike will find this book fascinating. It is published by Springer-Verlag London to celebrate the launch of the Astronomy publishing programme in the UK.

Solar Phenomena in Stars and Stellar Systems - Proceedings of the NATO Advanced Study Institute held at Bonas, France, August... Solar Phenomena in Stars and Stellar Systems - Proceedings of the NATO Advanced Study Institute held at Bonas, France, August 25-September 5, 1980 (Paperback, Softcover reprint of the original 1st ed. 1981)
R.-M Bonnet, A.K. Dupree
R1,615 Discovery Miles 16 150 Ships in 10 - 15 working days

This book represents the proceedings of a NATO Advanced Study Institute which was held at Bonas from August 25 till Sep tember 5, 1980 and was devoted to the study of "Solar Phenomena in Stars and Stellar Systems." It is intended for a broad audi ence. Students and post-doctoral scientists for example can dis cover new aspects of astrophysics. The general spirit of the ASI was aimed at presenting a unified aspect of astrophysical phenomena which can be studied intensively on the Sun although they are of a much more general nature. On the other hand, spe cialists in solar or stellar physics will find here the latest theoretical developments and/or the most recent observations made in their own field of research. An extensive bibliography will be found throughout the various sections, to which the reader may refer, for more detailed developments in various specific areas. In the past, stellar and solar astrophysics have more or less followed their own independent tracks. However, with the rapid development of modern techniques, in particular artificial satellites like the International Ultraviolet Explorer and the Einstein Observatory, which provide a new wealth of data, it appears that chromospheres, coronae, magnetic fields, mass loss and stellar winds, etc . . . ., are found not only in the Sun but occur also in other stars. Frequently these other stars represent quite different conditions of gravity, lumino ity, and other parameters from those occurring in the Sun."

Solar Magnetic Fields (Paperback, Softcover reprint of the original 1st ed. 1971): R.F. Howard Solar Magnetic Fields (Paperback, Softcover reprint of the original 1st ed. 1971)
R.F. Howard
R1,708 Discovery Miles 17 080 Ships in 10 - 15 working days

This symposium was held at the College de France in Paris from August 31 to Sep tember 4, 1970. The Organizing Committee consisted of V. Bumba, R. Howard (Chairman), K. O. Kiepenheuer, R. Michard, E. N. Parker, A. B. Severny, V. E. Stepanov, and T. Takakura. The Local Organizing Committee consisted of Miss G. Drouin (Secretary), R. Michard (Chairman), J. -C. Pecker, and J. Rayrole. We are indebted to the College de France for their kind hospitality. I wish to express my gratitude to members of the Organizing Committee for advice and assistance and to R. Michard and the Local Organizing Committee, who were responsible for the smooth running of the sessions, the distribution and collection of the discussion sheets, and for a delightful Wednesday afternoon excursion to Meudon. It is a pleasure to thank J. W. Evans, V. E. Stepanov, K. O. Kiepenheuer, R. G. Giovanelli, T. G. Cowling, V. Bumba, W. C. Livingston, and J. M. Wilcox who kindly served as session chairmen. I also wish to thank Miss Judy Harstine and John M. Adkins of the Hale Observatories, for invaluable assistance in editing the proceedings. This Symposium has been supported financially by the International Astronomical Union."

Meteorites - Classification and Properties (Paperback, Softcover reprint of the original 1st ed. 1974): J T Wasson Meteorites - Classification and Properties (Paperback, Softcover reprint of the original 1st ed. 1974)
J T Wasson
R2,892 Discovery Miles 28 920 Ships in 10 - 15 working days

My goal in writing this book was to provide an introduction to meteorite science and a handbook on meteorite classification. Insofar as I succeeded it should prove useful both to the practicing professional and to university students at the upper-division and graduate levels. I originally intended the book to be nearly twice as long. The second half was to be a review of properties relating to the origin of each group of meteorites. Chapter XVIII is an example of how these later chapters would have looked, although most would not have been as interpretative. These chapters would have been useful chiefly to meteorite researchers looking for a quick summary of group properties; they were not written because of lack of time. Perhaps I will start to prepare this "second volume" in a year or so when my family and I have recovered from the preparation of the present volume. Although some parts of the classification portion are mildly icono clastic, I have attempted either to avoid the inclusion of speculative interpretations or to flag them with a caveat to the reader. I have relaxed these principles somewhat in Chapter XVIII to conserve space, but even there the discussion of alternative speculations should give the reader a feeling for the degree of uncertainty attached."

The Origin and Dynamics of Solar Magnetism (Paperback, 2009 ed.): M.J. Thompson, A. Balogh, J.L. Culhane, A. Nordlund, S.K.... The Origin and Dynamics of Solar Magnetism (Paperback, 2009 ed.)
M.J. Thompson, A. Balogh, J.L. Culhane, A. Nordlund, S.K. Solanki, …
R2,930 Discovery Miles 29 300 Ships in 10 - 15 working days

Starting in 1995 numerical modeling of the Earth's dynamo has ourished with remarkable success. Direct numerical simulation of convection-driven MHD- ow in a rotating spherical shell show magnetic elds that resemble the geomagnetic eld in many respects: they are dominated by the axial dipole of approximately the right strength, they show spatial power spectra similar to that of Earth, and the magnetic eld morphology and the temporal var- tion of the eld resembles that of the geomagnetic eld (Christensen and Wicht 2007). Some models show stochastic dipole reversals whose details agree with what has been inferred from paleomagnetic data (Glatzmaier and Roberts 1995; Kutzner and Christensen 2002; Wicht 2005). While these models represent direct numerical simulations of the fundamental MHD equations without parameterized induction effects, they do not match actual pla- tary conditions in a number of respects. Speci cally, they rotate too slowly, are much less turbulent, and use a viscosity and thermal diffusivity that is far too large in comparison to magnetic diffusivity. Because of these discrepancies, the success of geodynamo models may seem surprising. In order to better understand the extent to which the models are applicable to planetary dynamos, scaling laws that relate basic properties of the dynamo to the fundamental control parameters play an important role. In recent years rst attempts have been made to derive such scaling laws from a set of numerical simulations that span the accessible parameter space (Christensen and Tilgner 2004; Christensen and Aubert 2006).

Destination Mars - New Explorations of the Red Planet (Paperback): Rod Pyle Destination Mars - New Explorations of the Red Planet (Paperback)
Rod Pyle; Foreword by Robert Manning
R545 R487 Discovery Miles 4 870 Save R58 (11%) Ships in 10 - 15 working days

In the next decade, NASA, by itself and in collaboration with the European Space Agency, is planning a minimum of four separate missions to Mars. Clearly, exciting times are ahead for Mars exploration. This is an insider's look into the amazing projects now being developed here and abroad to visit the legendary red planet. Drawing on his contacts at NASA and the Jet Propulsion Laboratory, the author provides stunning insights into the history of Mars exploration and the difficulties and dangers of traveling there.
After an entertaining survey of the human fascination with Mars over the centuries, the author offers an introduction to the geography, geology, and water processes of the planet. He then briefly describes the many successful missions by NASA and others to that distant world. But failure and frustration also get their due. As the author makes clear, going to Mars is not, and never will be, easy. Later in the book, he describes in detail what each upcoming mission will involve.
In the second half of the book, he offers the reader a glimpse inside the world of Earth-based "Mars analogs," places on Earth where scientists are conducting research in hostile environments that are eerily "Martian." Finally, he constructs a probable scenario of a crewed expedition to Mars, so that readers can see how earlier robotic missions and human Earth simulations will fit together.
All this is punctuated by numerous firsthand interviews with some of the finest Mars explorers of our day, including Stephen Squyres (Mars Exploration Rover), Bruce Murray (former director of the Jet Propulsion Laboratory), and Peter Smith (chief of the Mars Phoenix Lander and the upcoming OSIRIS-REx missions). These stellar individuals give us an insider's view of the difficulties and rewards of roaming the red planet.
The author's infectious enthusiasm and firsthand knowledge of the international space industry combine to make a uniquely appealing and accessible book about Mars.

How to Observe the Sun Safely (Paperback, 2nd ed. 2012): Lee Macdonald How to Observe the Sun Safely (Paperback, 2nd ed. 2012)
Lee Macdonald
R1,239 R977 Discovery Miles 9 770 Save R262 (21%) Ships in 10 - 15 working days

"How to Observe the Sun Safely, 2nd Edition" gives all the basic information and advice the amateur astronomer needs to get started in observing our own ever-fascinating star. Unlike many other astronomical objects, you do not need a large telescope or expensive equipment to observe the Sun. And it is possible to take excellent pictures of the Sun with today's low-cost digital cameras
This title concentrates on providing practical, on-the-spot advice to the amateur astronomer who is interested in observing the Sun, using commercially available equipment. This book surveys what is visible on the Sun, before describing how to record solar features and measure solar activity levels. There is also an account of how to use H-alpha and Calcium-K filters to observe and record prominences and other features of the solar chromosphere, the Sun's inner atmosphere. Because we are just entering a period of high activity on the Sun, following a long, quiet period, many more amateur astronomers will become interested in observing it.
The second edition includes an update of Chapter 2 to reflect advances in solar observing equipment since 2002, and a section on building a solar projection box, originally included in the main body of this chapter has been moved to Appendix A. Also Chapter 6 thru 8 have been completely revised to give amateur astronomers advice on how to use film to photograph the Sun, and how to use digital cameras. This new edition also includes more than twice as many illustrations as the first and almost half of them new images.

The Sun and the Heliosphere in Three Dimensions - Proceedings of the XIXth ESLAB Symposium, held in Les Diablerets,... The Sun and the Heliosphere in Three Dimensions - Proceedings of the XIXth ESLAB Symposium, held in Les Diablerets, Switzerland, 4-6 June 1985 (Paperback, Softcover reprint of the original 1st ed. 1986)
R.G. Marsden
R5,737 Discovery Miles 57 370 Ships in 10 - 15 working days

The 19th ESLAB Symposium on 'The Sun and the Heliosphere in Three Dimensions' was held in Les Diablerets (Switzerland) on 4-6 June 1985. Organised almost exactly ten years after the Goddard Space Fl i ght Center Sympos i um dea 1 i ng with the Sun and the i nterp 1 anetary medium in three dimensions, the aim of this Symposium was not only to review the progress made in understanding the three-dimensional structure and dynamics of the heliosphere, but also to look ahead to the scientific return to be expected from the Ulysses mission. Scheduled for launch in May 1986, the scientific instrumentation on board Ulysses will shed light on the conditions and processes occurring away from the ecliptic plane, thereby adding literally a new dimension to our understanding of the only stellar plasmasphere to which we have direct access. The scientific programme of the Symposium was built around a series of invited review papers dealing with aspects of the corona and its influence on the interplanetary medium via transient ejecta, the solar wind, energetic solar particles and galactic cosmic rays, interplanetary dust and neutral gas. These invited talks were supplemented by a number of contributed and poster papers. With the exception of three contributed talks and Wibberenz' review of coronal and acceleration of energetic particles, all papers propagation presented at the Symposium are included in this volume.

The Motion, Evolution of Orbits, and Origin of Comets (Paperback, Softcover reprint of the original 1st ed. 1972): G.A.... The Motion, Evolution of Orbits, and Origin of Comets (Paperback, Softcover reprint of the original 1st ed. 1972)
G.A. Chebotarev, E.I. Kazimirchak-Polonskaya, B.G. Marsden
R1,598 Discovery Miles 15 980 Ships in 10 - 15 working days

The many papers by Soviet authors have been translated into English by A. P. Kirillov, N. A. Nikiforova, E. A. Voronov, and others. Some of the papers were trans lated by the authors themselves. The discussion records have been prepared at the Institute for Theoretical Astronomy by V. K. Abalakin, N. A. Belyaev, A. P. Kirillov, V. A. Shor, E. A. Voronov, N. S. Yakhontova, and others. The three papers published in French have been carefully checked by B. Milet. The final editing has been done at the Smithsonian Astrophysical Observatory, and we thank J. H. Clark, P. D. Gregory, J. E. Kervick, and G. Warren for retyping much of the material. Our special thanks are due to the D. Reidel Publishing Company for the excellent care they have taken in printing these proceedings of IAU Symposium No. 45. G. A. CHEBOT AREV E. I. KAZIMIRCHAK-POLONSKA Y A B. G. MARSDEN INTRODUCTION The idea to organize a Symposium on 'The Motion, Evolution of Orbits, and Origin of Comets' dates back to the IAU thirteenth General Assembly, held in 1967 in Prague. Owing to the impossibility of completing during the General Assembly the discussion on the problem of orbital evolution of comets Professor G. A. Chebotarev, then the newly elected President of IAU Commission 20, initiated the organization of the international symposium in Leningrad where the full scope of cometary problems might be considered from the viewpoint of celestial mechanics."

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