How many days are there between full moons - think you know? Is there an ancient key to the calendar hidden in stone circles? What is the magical secret of the Sun-Moon-Earth system? If you have ever wondered about eclipses, tides or the seasons, this amazing little book by acknowledged time-lord Robin Heath will quickly introduce you to the astonishing beauty of the primary cycles around this planet. Advanced wizarding at its best! "Timeless" RESURGENCE. "Fascinating" FINANCIAL TIMES. "Beautiful" LONDON REVIEW OF BOOKS. "Rich and Artful" THE LANCET. "Genuinely mind-expanding" FORTEAN TIMES. "Excellent" NEW SCIENTIST. "Stunning" NEW YORK TIMES. Small books, big ideas.

Eclipsing Variables - What They can Tell Us and What We can do with Them The aim of the present book will be to provide an introduction to the inter pretation of the observed light changes of eclipsing binary stars and their analysis for the elements of the respective systems. Whenever we study the properties of any celestial body - be it a planet or a star - all information we wish to gain can reach us through two different channels: their gravitational attraction, and their light. Gravitational interaction between our Earth and its celestial neighbours is, however, measurable only at distances of the order of the dimensions of our solar system; and the only means of communication with the realm of the stars are their nimble-footed photons reaching us - with appropriate time-lag - across the intervening gaps of space. As long as a star is single and emits constant light, it does not constitute a very revealing source of information. A spectrometry of its light can disclose, to be sure, the temperature (colour, or ionization) of the star's semi-transparent outer layers, their chemical composition, and prevalent pressure (through Stark effect) or magnetic field (Zeeman effect), it can disclose even some information about its absolute luminosity or rate of spin. It cannot, however, tell us anything about what we should like to know most - namely, the mass or size (i.e., density) of the respective configuration; its absolute dimensions, or its internal structure."

A History of Astronomy, first published in 1907, offers a comprehensive introduction to the steady development of the science since its inception in the ancient world up to the momentous progress of the nineteenth century. It includes biographical material relating to the most famous names in the study of astronomy - Copernicus, Galileo, Newton, Herschel - and their contributions, clear and accessible discussions of key discoveries, as well as detailing the incremental steps in technology with which many of the turning points in astronomy were intimately bound up.

Proceedings of IAU Symposium No. 41, held in Munchen, Germany, August 10-14, 1970"

NASA Monographs in Aerospace History series, number 46.

This thesis addresses the feasibility of the production of ultra-high-energy cosmic rays in starburst galaxies and active galactic nuclei. These astrophysical objects were theoretically proposed as candidate sources a long time ago. Nevertheless, the interest in them has been recently renewed due to the observational data collected by the Pierre Auger Observatory and the Telescope Array. In this work, a comprehensive review of the current status of the research on cosmic rays accelerators is provided, along with a summary of the principal concepts needed to connect these relativistic particles with electromagnetic and neutrino observations in the multi-messenger era. On one hand, the hypothesis of accelerating particles with energies above 10(1)8 eV in starburst superwinds is carefully revisited, taking into account the constraints imposed by the most recent electromagnetic observations. On the other hand, an alternative new model for the gamma emission of the nearby active galaxy NGC 1068 is presented. The implications of the results of these studies are discussed in terms of the contemporary observatories and prospects for future experiments are offered.

First published in 1968. A reissue of the posthumous 1698 edition of Christian Huygen's The Celestial Worlds Discover'd or Conjecture concerning the Inhabitants, Plants and Productions of the Worlds in the Plants, including original figures and diagrams, with an index from 1968.

In ancient Maya cities, "E Groups" are sets of buildings aligned with the movements of the sun. This volume presents new archaeological data to reveal that E Groups were constructed earlier than previously thought-in fact, they are the earliest identifiable architectural plan at many Maya settlements. More than just astronomical observatories or calendars, E Groups were gathering places for emerging communities and centers of ritual: the very first civic-religious public architecture in the Maya lowlands. Investigating a wide variety of E Group sites in different contexts, this volume pieces together the development of social and political complexity in the ancient Maya civilization. A volume in the series Maya Studies, edited by Diane Z. Chase and Arlen F. Chase.

A History of Astronomy, first published in 1907, offers a comprehensive introduction to the steady development of the science since its inception in the ancient world up to the momentous progress of the nineteenth century. It includes biographical material relating to the most famous names in the study of astronomy - Copernicus, Galileo, Newton, Herschel - and their contributions, clear and accessible discussions of key discoveries, as well as detailing the incremental steps in technology with which many of the turning points in astronomy were intimately bound up.

The life story of this book spans many stages of the life and scientific career of one of the foremost astrophysicists/astrobiologists of our times. Starting from his boyhood days, the book describes the author's scientific work over the past 50 years, the ground-breaking discoveries he had made, the controversies generated in the scientific community, and the gradual acceptance of his discoveries. Written in lucid non-technical language it captures the essence of the author's research at Cambridge, his lifelong collaborations with the legendary astronomer of the 20th century, Sir Fred Hoyle, the birth of the subject of astrobiology which they arguably 'invented' in 1980, and his continuing ground-breaking research carried out while he was a Professor at Cardiff and later at Buckingham. The book traces the various influences that guided the author through his career, including that of his father who was a Cambridge Wrangler, and the profound influence of Buddhism in his early life.The author has published over 25 books and close to 300 scientific papers in peer-reviewed journals, over 60 of which were in the journal Nature.

This easy-to-use, accessible guide to starwatching in Botswana is ideal for
beginner and amateur stargazers. All stars described can be seen with the naked
eye – binoculars and telescopes are not necessary.

•  e book opens with stargazing tips while introducing important
astronomical concepts, describing our galaxy and the Earth’s place in it.
•  e body of the book o ers four star charts per month giving views from
north, south, east and west, with supporting descriptions of the stars and
constellations. Users can dip in during any month.
•  e  nal chapter surveys the solar system, including the Sun, Moon, planets
and le over debris.  ere’s information on a meteorite strike in Botswana in
2018, and how to identify arti cial satellites orbiting the Earth (including
the International Space Station).

Botswana’s ancestral stories about the stars are scattered throughout the book,
honouring indigenous interpretations of the night skies and giving a unique
African  avour.

This book focuses on the development and implementation of the longitudinal, angular and frequency controls of the Advanced Virgo detector, both from the simulation and experimental point of view, which contributed to Virgo reaching a sensitivity that enabled it to join the LIGO-Virgo O2 run in August 2017. This data taking was very successful, with the first direct detection of a binary black hole merger (GW170814) using the full network of three interferometers, and the first detection and localization of a binary neutron star merger (GW170817). The second generation of gravitational wave detector, Advanced Virgo, is capable of detecting differential displacements of the order of 10-21m. This means that it is highly sensitive to any disturbance, including the seismic movement of the Earth. For this reason an active control is necessary to keep the detector in place with sufficient accuracy.

The book points out what has gone wrong with physics since Einstein's formulation of this theory of general relativity a century ago. It points out inconsistencies and fallacies in the standard model of the big bang and the inflationary scenario which was supposed to have overcome those shortcomings, the evolution of string theory from a theory of the strong interaction to a theory of gravitation and quantum mechanics which has not produced a single verifiable prediction, and what it has accomplished is reaffirming wrong results like the entropy of a black hole, which is not an entropy at all. There have even been attempts to demote gravity to an emergent phenomenon with catastrophic effects. We know exactly what happened at 10-34 seconds after the big bang, but do not know how fast gravity propagates, whether gravitational waves exist, and what are the limits of Newton's law. Attempts to rectify this are the prediction of dark energy/matter, which has never been observed nor ever will, and MOND. The latter is really not a modification of Newtonian mechanics, but a transformation of a dynamical law into a statistical one.

Galileo is known as a pioneer of science - especially of mechanics and astronomy, but far less attention has been paid to his work on the senses, and on vision in particular. In this book, two experts on the history of science look at the novel ways in which Galileo looked at the heavens through his telescope, and, in the process, emphasised the importance of contrast phenomena and visual resolution within astronomical observations. He also described the senses and their perception in terms that found an echo in doctrines advanced by nineteenth century sensory physiologists. In a fascinating and accessible style, Marco Piccolino and Nick Wade analyse the scientific and philosophical work of Galileo Galilei from the particular viewpoint of his approach to the senses (and especially vision) as a means of acquiring trustworthy knowledge about the constitution of the world. For Galileo the senses were potentially ambiguous, hence reliable information capable of penetrating the complexity of reality could only be obtained by interpreting the sensory data critically. The philosophical background of Galileo's attitude to the senses was his awareness that nature had not developed a specific language aimed at communicating with senses generally and human senses in particular. The culture of his age was based mainly on mechanistic approaches to the world. In this context, Galileo's analysis of the senses corresponded closely to a fundamental tenet of modern sensory physiology and psychophysics - the absence in the world of specific sensory signals like sounds, colours, tastes, and odours. Fully illustrated throughout, this book is an important contribution to psychology and the vision sciences, but more broadly to our knowledge of a pioneering figure in the history of science.

This work presents a unified treatment of three important integrable problems relevant to both Celestial and Quantum Mechanics. Under discussion are the Kepler (two-body) problem and the Euler (two-fixed center) problem, the latter being the more complex and more instructive, as it exhibits a richer and more varied solution structure. Further, because of the interesting investigations by the 20th century mathematical physicist J.P. Vinti, the Euler problem is now recognized as being intimately linked to the Vinti (Earth-satellite) problem.

Here the analysis of these problems is shown to follow a definite shared pattern yielding exact forms for the solutions. A central feature is the detailed treatment of the planar Euler problem where the solutions are expressed in terms of Jacobian elliptic functions, yielding analytic representations for the orbits over the entire parameter range. This exhibits the rich and varied solution patterns that emerge in the Euler problem, which are illustrated in the appendix. A comparably detailed analysis is performed for the Earth-satellite (Vinti) problem.

Key features:

* Highlights shared features in the unified treatment of the Kepler, Euler, and Vinti problems

* Raises challenges in analysis and astronomy, placing this trio of problems in the modern context

* Includes a full analysis of the planar Euler problem

* Highlights the complexa "and surprising orbita "patterns that arise from the Euler problem

* Provides a detailed analysis and solution for the Earth-satellite problem

The analysis and results in this work will be of interest to graduate students in mathematics and physics (including physical chemistry) andresearchers concerned with the general areas of dynamical systems, statistical mechanics, and mathematical physics and has direct application to celestial mechanics, astronomy, orbital mechanics, and aerospace engineering.

This book provides a thorough introduction to and exploration of deep sky astrophotography for the digital photographer. With over 280 images, graphs, and tables, this introductory book uses a progressive and practical style to teach readers how to image the night sky using existing, affordable equipment. The book opens with a brief astronomy primer, followed by chapters that build progressively to explain the challenges, offer solutions, and provide invaluable information on equipment choice through image capture, calibration, and processing in affordable software. The book's focus ranges from how to image sweeping vistas and star trails using only a camera body, lens and tripod, to more advanced methods suitable for imaging galaxies, clusters, nebulae, and stars. Other features of the book include: Real-world assignments showing how and when to use certain tools and how to overcome challenges and setbacks Practical construction projects Evaluations of the most recent developments in affordable hardware and software Exploration on how sensor performance and light pollution relate to image quality and exposure planning Ground-breaking practical chapters on lucky imaging and choosing and using the latest CMOS cameras Written in an accessible, easy to follow format, this comprehensive guide equips readers with all the necessary skills to progress from photographer to astrophotographer.

Field theory is an important topic in theoretical physics, which is studied in the physical and physico-mathematical departments of universities. Therefore, lecturers are faced with the urgent task of not only providing students with information about the subject, but also to help them master the material at a deep qualitative level, by presenting the specific features of general approaches to the statement and the solution of problems in theoretical physics. One of the ways to study field theory is the practical one, where the students can deepen their knowledge of the theoretical material and develop problem-solving skills. This book includes a concise theoretical summary of the main branches of field theory and electrodynamics, worked examples, and some problems for the student to solve.The book is written for students of theoretical and applied physics, and corresponds to the curricula of the theoretical courses 'Field theory' and 'Electrodynamics' for physics undergraduates. It can also be useful for students of other disciplines, in particular, those in which physics is one of the base subjects.

Reviews the current state of knowledge of neutrino masses and the related question of neutrino oscillations. After an overview of the theory of neutrino masses and mixings, detailed accounts are given of the laboratory limits on neutrino masses, astrophysical and cosmological constraints on those masses, experimental results on neutrino oscillations, the theoretical interpretation of those results, and theoretical models of neutrino masses and mixings. The book concludes with an examination of the potential of long-baseline experiments. This is an essential reference text for workers in elementary-particle physics, nuclear physics, and astrophysics.

This unique volume captures the content of the XXXth International Workshop on High Energy Physics. The scope of this volume is much wider than just high-energy physics; it actually concerns and includes materials from all the most fundamental areas of modern physics research: high-energy physics proper, gravitation and cosmology. Presentations embrace both theory and experiment.

This second volume of Frontiers articles contains a broad array of fascinating topics. The first four
papers focus on the Sun, the origin of the solar system and the early history of the Earth. The fifth, on komatiites, is also relevant to the early Earth but also forms a nice transition to three articles that focus on subduction and mantle processes. The final three articles focus on changes in our surface environment including biogeochemical cycles, the evolution of hominids and, finally, the future threat posed by near Earth asteroids.

The book provides the most recent advances of Celestial Mechanics, as provided by high-level scientists working in this field. It covers theoretical investigations as well as applications to concrete problems. Outstanding review papers are included in the book and they introduce the reader to leading subjects, like the variational approaches to find periodic orbits and the space debris polluting the circumterrestrial space.

Long established as one of the premier references in the fields of astronomy, planetary science, and physics, the fourth edition of Orbital Motion continues to offer comprehensive coverage of the analytical methods of classical celestial mechanics while introducing the recent numerical experiments on the orbital evolution of gravitating masses and the astrodynamics of artificial satellites and interplanetary probes. Following detailed reviews of earlier editions by distinguished lecturers in the USA and Europe, the author has carefully revised and updated this edition. Each chapter provides a thorough introduction to prepare you for more complex concepts, reflecting a consistent perspective and cohesive organization that is used throughout the book. A noted expert in the field, the author not only discusses fundamental concepts, but also offers analyses of more complex topics, such as modern galactic studies and dynamical parallaxes. New to the Fourth Edition: * Numerous updates and reorganization of all chapters to encompass new methods * New results from recent work in areas such as satellite dynamics * New chapter on the Caledonian symmetrical n-body problem Extending its coverage to meet a growing need for this subject in satellite and aerospace engineering, Orbital Motion, Fourth Edition remains a top reference for postgraduate and advanced undergraduate students, professionals such as engineers, and serious amateur astronomers.

Introductory Astronomy is a lucidly written introduction to the planets, the stars and beyond. Starting with problems astronomers face on Earth connected with observation, the text then moves on to cover the Solar System, stars, galaxies and finally cosmology. The evolution and internal workings of astronomical bodies are outlined, demystifying arcane entities such as black holes and white dwarfs in the process. Carefully structured, this text has a strong narrative thread running throughout and concepts are gradually introduced, and subsequently built upon in later chapters. The science behind the subject is integrated and presented in a way that enables the reader to gain a thorough understanding of the subject without blinding them with unnecessary mathematical detail or scientific theory. Astronomy is brought to life through the many carefully chosen examples, figures and photographs. Introductory Astronomy:

• Provides a balanced introduction to the field of astronomy.
• Includes many carefully chosen worked examples and problems.
• Is clearly written to appeal to students and amateur astronomers alike.