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Books > Science & Mathematics > Astronomy, space & time > Solar system
This monograph is the fIrst book exclusively devoted to Dusty and
Dirty from a unifIed Electrohydrodynamical point of view,
incorporating new Plasmas concepts of Electric Cusp-Reconnection
and Generalized Critical Ionization Velocities, based on a survey
stimulated from a series of International Wo- shops/Symposia on
Plasmas in Space and in the Laboratory held in Tokyo since 1980,
and from associations with a number of Universities and
Institutions which offered me opportunities to do specifIc
research. For example, the subjects of Mirrors and Cusps, Critical
Velocities, Double Layers or Dipoles, and Quadrupoles in this
monograph were initiated by the fIrst International Workshop on
Relation between Laboratory and Space Plasmas held in Tokyo in 1980
which was well received, in this connection in particular
thankfully by the late Professor Hannes Alfven with encouraging
communica tions, inspiring me to studies of critical velocities,
electrical version offield line merging-reconnection, and
Unconventional Plasmas. Although the subject of this monograph was
partly included also in topics at the URSI Workshop on Nonlinear
and Environmental Electromagnetics in 1984, at the second Wo- shop
on Relation between Laboratory and Space Plasmas in 1986, and at
the URSI Symposium on Environmental and Space Electromagnetics in
1989, the main subject: Dusty and Dirty Plasmas and EHD
(electrohydrodynamics) was discussed exclusively at the later
Symposium in 1992, resulting in the fIrst monograph, Dusty and
Dirty Plasmas with Noise and Chaos in Space and in the Laboratory
in this fIeld for which Professor John E.
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Dear Pluto
(Hardcover)
Carmen Gloria; Illustrated by Carmen Gloria
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Discovery Miles 6 320
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Influenced by astronomy education research, 21st Century Astronomy
offers a complete pedagogical and media package that facilitates
learning by doing, while the new one-column design makes the Fifth
Edition the most accessible introductory text available today.
Every night, above our heads, a drama of epic proportions is
playing out. Diamond planets, zombie stars, black holes heavier
than a billion Suns. The cast of characters is extraordinary, and
each one has its own incredible story to tell. We once thought of
our Earth as unique, but we have now discovered thousands of alien
planets, and that's barely a fraction of the worlds that are out
there. And there are more stars in the Universe than grains of sand
on every planet in the Solar System. But amid all this vastness,
the Milky Way Galaxy, our Sun and the Earth are home to the only
known life in the Universe - at least for now. With a foreword from
Professor Brian Cox, and access to all the latest stunning NASA
photography, Andrew Cohen takes readers on a voyage of discovery,
via the probes and telescopes exploring the outer reaches of our
galaxy, revealing how it was formed and how it will inevitably be
destroyed by the enigmatic black hole at its heart. And beyond our
galaxy, the expanding Universe, which holds clues to the biggest
mystery of all - how did it all begin? We now know more about those
first moments of existence than we ever thought possible, and
hidden in this story of how it all began are the clues to the fate
of the Universe itself and everything in it.
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Moons
(Paperback)
Anna Gammon-Ross
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Moons come, quite literally, in all shapes and sizes. Our Moon is
just one of more than 200 moons in the Solar System that we've
identified so far. Scientists have discovered moons made of rock,
others of ice. There are moons with atmospheres or with oceans
hidden beneath their surfaces, and even some with active volcanoes.
Others could perhaps be suitable for life! Astronomer Anna
Gammon-Ross of Royal Observatory Greenwich travels through the
Solar System, hopping from one moon to the next, to discover not
only what these natural satellites have in common, but also what
makes each one unique. Learn about the moons that can be found in
and around Saturn's rings (and the many others we suspect there
could be), the objects orbiting the distant dwarf planets and the
curious theory of moon-moons.
In summary, we can conclude that the contributions of the different
ionization processes to the total ionization rate for the most
abundant interstellar species are basically known. The ionization
of the noble gases He and Ne is almost completely dominated by
photoionization, whereas for H charge-exchange with the solar wind
is most important. For other species, such as 0 and Ar, both
processes contribute significantly. Electron impact ionization can
typically contribute by '" 10% to the total rate in the inner Solar
System. Because direct measurements of the solar EUV flux are not
yet continuously available, the variation of the ionization rate
over the solar cycle still contains a relatively large uncertainty.
The recent measurements of pickup ion distributions and of the
neutral helium gas provide an independent tool to determine the
total ionization rate that can be used to cross calibrate with the
results obtained for the individual ionization processes.
Acknowledgements The authors are grateful to M. Allen for supplying
us with new data on photoioniza tion cross-sections compiled by
him. We thank also M. Gruntman for drawing our attention to and
support in collecting the most recent data on charge-exchange
cross-sections. D. R. was supported by grant No. 2 P03C. 004. 09
from the Com mittee for Scientific Research (Poland). This work was
also supported in part through NASA contract NAS7-918, NSF Grant
INT-911637, NASA Grant NAGW- 2579.
The luminosity of the sun governs the temperature of the planets.
And the solar forcing, or driving, of climate, primarily due to
changes insolar radiation, is an idea whose history has not been
well documented in a book. Recent satellite measurements have shown
that solar radiation varies as a function of wavelength - a concept
that for the past two centuries scientists have claimed would be
proved. Now, with all of the attention being given to global
warming, this topic has again become timely. The book will review
the physics of the concept of solar forcing in manageable terms,
tracing its history from its beginnings in the early 1800s toits
apparent success in the 1920s, to its near demise in the 1950s and
its resurrection in recent years. Emphasis will be on solar
variation as a driver for climate change, with only a brief
discussion of other mechanisms - thus assuring the book a clear
focus.
The articles in this volume are a document of the Galileo mission
to Jupiter. The Mission Overview is the first article; the second
is a description of the design of the very complex spacecraft
trajectory in relation to the scientific objects. Subsequent
articles describe the various investigations planned by the
scientific groups. These are divided in three groups: the Probe,
the Magnetospheric Experiments, and the Remote Sensing and Radio
Investigations.
Magnetic energy release plays an important role in a wide variety
of cosmic objects such as the Sun, stellar coronae, stellar and
galactic accretion disks and pulsars. The observed radio, X-ray and
gamma-ray emission often directly results from magnetic flares',
implying that these processes are spatially fragmented and of an
impulsive nature. A true understanding of these processes requires
a combined magnetohydrodynamical and plasma physical approach.
Fragmented Energy Release in Sun and Stars: the Interface between
MHD and Plasma Physics provides a comprehensive, interdisciplinary
summary of magnetic energy release in the Sun and stars, in
accretion disks, in pulsar magnetospheres and in laboratory
plasmas. These proceedings include papers on both theoretical and
observational aspects. Fragmented Energy Release in Sun and Stars:
the Interface between MHD and Plasma Physics is for researchers in
the fields of solar physics, stellar astrophysics and (laboratory)
plasma physics and is a useful resource book for graduate level
astrophysics courses.
Novel instruments for high-precision imaging polarimetry have
opened new possibilities, not only for diagnostics of magnetic
fields, but also for exploring effects in radiative scattering,
atomic physics, spectral line formation and radiative transfer. The
observational advances have stimulated various theoretical
developments, for instance in vector radiative transfer and
techniques for inverting polarized line profiles. The present
volume gives a comprehensive and up-to-date account of this rapidly
evolving and interdisciplinary field of science. It is based on the
oral presentations given at the 2nd International Workshop on Solar
Polarization held in Bangalore, India, in October 1998.
This book views Mercury as a whole in the context of its
environment. It illustrates what we know and what we need to know,
and why understanding Mercury is so crucial to our understanding of
solar system origin and current processes on Earth. The book
describes our current state of knowledge for Mercury and
interactions between interior, exterior, and space environment
which are highly dynamic and thus critical to understanding Mercury
as a system.
In the early years of the twentieth century, Victor Hess of Germany
flew instruments in balloons and so discovered in 1912 that an
extra- errestial radiation of unknown origin is incident on the
earth with an almost constant intensity at all times. These
penetrating non solar radiations which were called Cosmic Rays by
Millikan, USA, opened the new frontier of space physics and many
leading scientists were attracted to it. At the end of World War II
a number of space vehicles, e.g. stratospheric balloons, rockets
and satellites were developed. In 1950 and onwards, these vehicles
enabled spectacular advances in space physics and space
astrophysics. New horizons were opened in the explorations of
cosmic rays, the earth's magnetosphere, the Sun and the
heliosphere, the moon and the planets. Using space-borne
instruments, exciting discoveries were made of stars, and galaxies
in the infra-red, ultra violet, x-ray and gamma-ray wavelengths. In
this text book these fascinating new findings are presented in
depth and on a level suitable for senior undergraduate and graduate
students, research scientists and scientists of other disciplines.
Although there are several excellent books and monographs on
different aspects, most of these deal with specific areas. In this
text book the findings of space physics and astrophysics are
presented in an integrated manner with proper introductions to the
fundamental aspects, and these are supplemented by relevant ground
based observations."
The COSPAR Colloquium on Solar-Terrestrial Magnetic Activity and
Space Environment (STMASE) was held in the National Astronomy
Observatories of Chinese Academy of Sciences (NAOC) in Beijing,
China in September 10-12, 2001. The meeting was focused on five
areas of the solar-terrestrial magnetic activity and space
environment studies, including study on solar surface magnetism;
solar magnetic activity, dynamical response of the heliosphere;
space weather prediction; and space environment exploration and
monitoring. A hot topic of space research, CMEs, which are widely
believed to be the most important phenomenon of the space
environment, is discussed in many papers. Other papers show results
of observational and theoretical studies toward better
understanding of the complicated image of the magnetic coupling
between the Sun and the Earth, although little is still known
little its physical background. Space weather prediction, which is
very important for a modern society expanding into out-space, is
another hot topic of space research. However, a long way is still
to go to predict exactly when and where a disaster will happen in
the space. In that sense, there is much to do for space environment
exploration and monitoring. The manuscripts submitted to this
Monograph are divided into the following parts: (1) solar surface
magnetism, (2) solar magnetic activity, (3) dynamical response of
the heliosphere, (4) space environment exploration and monitoring;
and (5) space weather prediction. Papers presented in this meeting
but not submitted to this Monograph are listed by title as
unpublished papers at the end of this book.
"In his new book, Transit of Venus, 1631 to the Present, Dr Nick
Lomb - an astronomer at the Sydney Observatpry and the author of
the Australian Sky Guide - has produced what may be his most timely
publication to date...Dr Lomb has cooked up both a titillating
textual treat and a full-bodied visual feast, and whether his
readers choose to nibble at the book meditatively or to ingest it
voraciously in a single sitting, they are sure to come away licking
their lips and drooling for more." - Michael E. Chauvin, The
Bulletin The transit of Venus across the sun in June 2012 will be
the last chance in our lifetime to see this rare planetary
alignment that has been so important in history. Rich in historical
detail and cutting edge science, along with practical information
on how and when to view the transit, Transit of Venus is the
must-have companion to this extraordinary astronomical event. From
Johannes Kepler's first prediction of a transit of Venus in 1631,
to Captain Cook's 1769 transit expedition to Tahiti (which led to
the European settlement of Australia), and on to our 21st-century
quest to find distant Earth-like planets using the transit method,
astronomer Nick Lomb takes us on a thrilling journey of exploration
and adventure.
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The NASA Kepler Mission
(Hardcover)
Steve B. Howell; Contributions by William Borucki, John Troeltzsch, Jessie Christiansen, Stephen R Kane, …
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R3,344
Discovery Miles 33 440
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The last decade of this century has seen a renewed interest in the
dynamics and physics of the small bodies of the Solar System,
Asteroids, Comets and Meteors. New observational evidences such as
the discovery of the Edgeworth-Kuiper belt, refined numerical tools
such as the symplectic integrators, analytical tools such as
semi-numerical perturbation algorithms and in general a better
understanding of the dynamics of Hamiltonian systems, all these
factors have converged to make possible and worthwhile the study,
over very long time spans, of these "minor" objects. Also the
public, the media and even some political assell}blies have become
aware that these "minor" objects of our planetary environnement
could become deadly weapons. Apparently they did have a role in
Earth history and a role more ominous than "predicting" defeat (or
victory, why not?) to batches of credulous rulers. Remembering what
may have happened to the dinosaurs but keeping all the discretion
necessary to avoid creating irrational scares, it may not be unwise
or irrelevant to improve our knowledge of the physics and dynamics
of these objects and to study in particular their interactions with
our planet.
IMAGE (Imager for Magnetopause-to-Aurora Global Exploration) is the
first NASA MIDEX mission and the first mission dedicated to imaging
the Earth's magnetosphere. This volume offers detailed descriptions
of the IMAGE instrumentation and of the image inversion techniques
used to interpret the data. Also included are chapters on the IMAGE
science objectives, the spacecraft design and capabilities, science
and mission operations, and the processing and distribution of
IMAGE's nonproprietary data products.
Divided into two parts, the first four chapters of Comets and their
Origin refer to comets and their formation in general, describing
cometary missions, comet remote observations, astrochemistry,
artificial comets, and the chirality phenomenon. The second part
covers the cometary ROSETTA mission, its launch, journey,
scientific objectives, and instrumentations, as well as the landing
scenario on a cometary nucleus. Along the way, the author presents
general questions concerning the origin of terrestrial water and
the molecular beginnings of life on Earth, as well as how the
instruments used on a space mission like ROSETTA can help answer
them. The text concludes with a chapter on what scientists expect
from the ROSETTA mission and how its data will influence our life
on Earth. As a result, the author elucidates highly topical and
fascinating knowledge to scientists and students of various
scientific backgrounds, allowing them to work with ROSETTA's data.
Cluster was one of the two missions - the other being the Solar and
Heliospheric Observatory (SOHO) - constituting the Solar
Terrestrial Science Programme (STSP), the first `cornerstone' of
ESA's Horizon 2000 Programme. After the catastrophic Ariane-5
accident on 4 June 1996 which destroyed the four Cluster
spacecraft, the European Space Agency Science Programme Committee
gave approval to refurbish the spare Cluster spacecraft and make it
ready for flight. This new spacecraft, considered to be the first
of a new fleet, is called Phoenix. In the meantime various options
to repeat the Cluster four-point measurements are being studied.
Since Phoenix, as the fifth Cluster spacecraft, will be equipped
with the spare Cluster experiments, the instrumentation articles in
this book are still appropriate to the new mission. Furthermore,
the objectives of the recovery mission, the ground systems, the
ground observation program and the theory and modelling efforts all
remain unchanged. Thus this series of articles will continue to be
essential to the Cluster community and to the general scientific
community as the recovery mission is implemented.
As in the days following Skylab, solar physics came to the end of
an era when the So lar Maximum Mission re-entered the earth's
atmosphere in December 1989. The 1980s had been a pioneering decade
not only in space- and ground-based studies of the solar atmosphere
(Solar Maximum Mission, Hinotori, VLA, Big Bear, Nanc;ay, etc.) but
also in solar-terrestrial relations (ISEE, AMPTE), and solar
interior neutrino and helioseismol ogy studies. The pace of
development in related areas of theory (nuclear, atomic, MHD,
beam-plasma) has been equally impressive. All of these raised
tantalizing further questions about the structure and dynamics of
the Sun as the prototypical and best observed star. This Advanced
Study Institute was timed at a pivotal point between that decade
and the realisation of Yohkoh, Ulysses, SOHO, GRANAT, Coronas, and
new ground-based optical facilities such as LEST and GONG, so as to
teach and inspire the up and coming young solar researchers of the
1990s. The topics, lecturers, and students were all chosen with
this goal in mind, and the result seems to have been highly
successful by all reports."
The question of the existence of other worlds and other living
beings has been present in the human quest for knowledge since as
far as Epicurus. For centuries this question belonged to the fields
of philosophy and theology. The theoretical problem of the
formation of the Solar System, and hence of other planetary
systems, was tackled only during the 18th century, while the first
observational attempts for a detection started less than one
hundred years ago. Direct observation of an extra-solar planetary
system is an extraordinarily difficult problem: extra-solar planets
are at huge distances, are incredibly faint and are overwhelmed by
the bright light of their own stars. With virtually no
observational insight to test their models, theoreticians have
remained for decades in a difficult position to make substantial
progress. Yet, the field of stellar formation has provided since
the 1980s both the the oretical and observational evidences for the
formation of discs at the stage of star birth and for debris
materials orbiting the very young stellar systems. It was tempting
to consider that these left-overs might indeed later agglomerate
into planetary systems more or less similar to ours. Then came
observational evidences for planets outside the Solar System."
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