# Проект "Земля - Луна": Монография

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## Планируемое название

• Non-impact origin of the Moon

## Контакты

Phone: + 49-(0)30-260 05 - 210
Fax: + 49-(0)30-260 05 - 352
e-mail: vonFriedeburg@degruyter.com

## Сроки

• Конец апреля 2012 г.

## Материалы

А.А. Ле-Захаров, А.М. Кривцов. Разработка алгоритмов расчета столкновительной динамики гравитирующих частиц для моделирования образования системы Земля-Луна в результате гравитационного коллапса пылевого облака. Статья в сборник по Программе. Отправлена 16 февраля 2012. [1]

## The definition of the topic

At present, hypothesis of the formation of the Moon from material of the Earth-mantle is a paradigm. It suggests collision of the Earth with a large (Mars-size) body during the first 30-50 million years of the Earth history. This hypothesis, known as the giant impact hypothesis, was coined in the middle of the 1970s and gained acceptance because it provided a simple solution for a number of dynamic and geochemical problems. However, during the course of time some inconsistencies of the impact hypothesis have surfaced. It is not the purpose of this book to make a critical review of the giant impact hypothesis. Instead, we would like to show another mechanism of the formation of the Moon, different from the collision model, which considers the geochemical constraints and results of the dynamic simulation.

## The reason for publication (why this book is needed)

The giant impact hypothesis of the Moon formation is very well known, but other possible scenarios are left in a shadow. However, the giant impact hypothesis is incapable of explaining some geochemical aspects of the situation. The book is aimed to explain the competing scenarios and show the alternative possibilities for the Earth-Moon formation. Such a monograph, written in a fair and balanced manner, could be a truly valuable acquisition to the planetology community.

## Proposed list of contents

Preface
I The Moon
• History of study.
• The Moon as a celestial body.
• Structure, chemical composition and mineralogy.
• Lunar geology.
• Data on the age of the Moon.
II Solar system
• Beginning of the Solar system.
• Extrosolar planetary systems.
• Possible scenarios of accumulation of planets.
III Hypotheses of the Moon’s origin
• The giant impact model.
• Other models.
IV The model of formation of the Earth-Moon system via fragmentation of the initial gas-dust concentration
• Enrichment of the Moon in refractory elements and depletion in volatiles.
• Volatility of iron.
• Evaporation of particles during contraction of the initial cloud is a crucial factor for both: dynamic of its fragmentation and depletion of the Moon in iron.
• Geochemical consequences following from the model and how they are reconciled with the observations.
V Isotope constraints for evolution of the gas-dust cloud initial for Earth and Moon and again of their formation
• Stable isotopes
• 182Hf-182W
• 87Rb-87Sr
• 129I-129Xe, 244Pu-136Xe
• 236U-208Pb, 235U-207Pb
• 146Sm-142Nd
VI Dynamics of the Earth-Moon formation
• Existing models for simulation of the dynamics of the Earth-Moon formation.
• Modelling of the Earth-Moon system formation using particles.
• Sequential stages of Earth-Moon system formation.
• Formation of the gas-dust cloud.
• Rotational collapse.
• Accumulation growth of the Earth and Moon embryos.
• Results of the dynamics simulation and analysis of their dependence on the model parameters and conditions of the computations.
• Analysis of the composition of Earth and Moon obtained from the dynamical model.
Summary
References

## Books relate to or are similar to this project, the differences

• Origin of the Earth and Moon (Space Science). Editors : Robin M. Canup, Kevin Righter. University of Arizona Press. $60.00 This book is compilation of papers of different authors (not a monograph). The book is mainly aimed to support the megaimpact hypothesis, leaving in a shadow other non-ipact possibilities of the Moon origin. • Dana Mackenzie. The Big Splat, or How Our Moon Came to Be, 2003, John Wiley & Sons, ISBN 0-471-15057-6.$33.95
• Neil F. Comins. What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been. 1995. \$119.22

These books are of popular kind, which is not satisfactory for the specialists in the area.

## The audiences the book is aimed

Advanced students, PhD students and researchers in Theoretical and Mathematical Physics and also any non-specialists interested in the problem of Solar system formation wishing to gain an overview in the origin of Earth and Moon.

## Professional societies, companies, or other groups which might be interested in the book

• American Astronomical Society
• American Physical Society
• Association of Lunar and Planetary Observers
• Astronomical League
• Astronomical Society of India
• Astronomische Gesellschaft
• Federation of Astronomical Societies
• Eurasian Astronomical Society
• European Association for Astronomy Education
• European Astronomical Society
• Europlanet
• International Astronomical Union
• NASA
• Planetary Society
• Royal Astronomical Society of Canada
• Royal Astronomical Society in London
• Royal Society of London

And many other societies, companies, groups related to astrophysics and planetary science.

## Key journals in the area

• AIAA Journal
• American Scientist
• Annual Review of Astronomy and Astrophysics
• Annual Review of Earth and Planetary Sciences
• Astrobiology
• Astronomical Journal
• Astronomical Review
• Astronomische Nachrichten
• Astronomy
• Astronomy and Astrophysics
• The Astronomy and Astrophysics Review
• Astronomy & Geophysics
• Astronomy Education Review
• Astronomy Letters
• Astronomy Now
• Astronomy Reports
• The Astrophysical Journal
• The Astrophysical Journal Letters
• Astrophysics
• Astrophysical Journal Supplement Series
• Astrophysics and Space Science
• Astrofisika
• Bulletin of the American Astronomical Society
• Bulletin of the Astronomical Society of India
• Earth, Moon, and Planets
• Earth and Planetary Science Letters
• Geochemistry International
• Geophysical Research Letters
• Icarus
• Journal of Astrophysics & Astronomy
• Journal of the British Interplanetary Society
• Journal of Earth System Science
• Journal of the Royal Astronomical Society of Canada
• Meteoritics & Planetary Science
• Monthly Notices of the Royal Astronomical Society
• Philosophical Transactions of the Royal Society Series A. Mathematical, Physical & Engineering Sciences
• Physical Review D
• Pis’ma v Astronomicheskii Zhurnal
• Planetary Report
• Planetary and Space Science
• Proceedings of the International Astronomical Union
• Solar System Research