This book, which has been in the making for some eighteen years, would never have begun were it not for Dr. David Dewhirst in 1976 kindly having shown the author a packet of papers in the archives of the Cambridge Obser vatories. These letters and miscellaneous papers of Fearon Fallows sparked an interest in the history of the Royal Observatory at the Cape of Good Hope which, after the diversion of producing several books on later phases of the Observatory, has finally resulted in a detailed study of the origin and first years of the Observatory's life. Publication of this book coincides with the 175th anniversary of the founding of the Royal Observatory, e.G.H. Observatories are built for the use of astronomers. They are built through astronomers, architects, engineers and contractors acting in concert (if not always in harmony). They are constructed, with whatever techniques and skills are available, from bricks, stones and mortar; but their construction may take a toll of personal relationships, patience, and flesh and blood."

"Revolution and Pedagogy" explores the tensions between and within the processes of revolutionary pedagogical change and continuity. Focusing on those enacting pedagogical contexts, E. Thomas Ewing's collection provides an innovative and sophisticated exploration of complex directions and forces. These revolutions include the struggle for independence in the Philippines, the Russian revolution that led to communist Soviet Union, the Egyptian campaigns against British colonial authority, the development of Kurdish national identity in the context of Turkey's modernization, radical and reformist educational movements in Western Europe and the Americas, the Palestinian struggle for self-determination, and the contemporary debate over national and religious identity in India. "Revolution and Pedagogy" examines conventional topics such as school policies and curriculum content, as well as more non-traditional pedagogies such as public celebrations of holidays, participation in international exchange programs, and the incarceration of political activists. The geographically diverse contributors from a wide range of disciplinary approaches produce interdisciplinary and transnational perspectives on education and revolution.

The aim of this Advanced Study Institute was to give an account on the most recent results obtained in solar research. Bucharest was chosen to host it, because the capital city of Romania was located right in the middle of the totality path of the last eclipse of the millennium, on 11th August 1999; furthermore the phenomenon was close to reach there its longest duration: 2m 23s. Such a total eclipse is not only a very spectacular event which draws the crowds: to astronomers, solar eclipses still offer the best conditions for observing the lower part of the corona. The Sun plays a crucial role in our very existence. It was responsible for the formation of the Earth, and rendered this planet fit to host living beings, providing the right amount of heat, and this for a long enough span of time. Quite understandably, it has always been a prime target of human curiosity, and more recently one of scientific investigation. During the last century, it was realized that the Sun is a star like billions of others; we learned since that it draws its energy from the nuclear fusion of hydrogen, and we are now able to estimate its age and life expectancy.

Introd uction The problem of integrability or nonintegrability of dynamical systems is one of the central problems of mathematics and mechanics. Integrable cases are of considerable interest, since, by examining them, one can study general laws of behavior for the solutions of these systems. The classical approach to studying dynamical systems assumes a search for explicit formulas for the solutions of motion equations and then their analysis. This approach stimulated the development of new areas in mathematics, such as the al gebraic integration and the theory of elliptic and theta functions. In spite of this, the qualitative methods of studying dynamical systems are much actual. It was Poincare who founded the qualitative theory of differential equa tions. Poincare, working out qualitative methods, studied the problems of celestial mechanics and cosmology in which it is especially important to understand the behavior of trajectories of motion, i.e., the solutions of differential equations at infinite time. Namely, beginning from Poincare systems of equations (in connection with the study of the problems of ce lestial mechanics), the right-hand parts of which don't depend explicitly on the independent variable of time, i.e., dynamical systems, are studied.

Galaxies have a history. This has become clear from recent sky surveys which have shown that distant galaxies, formed early in the life of the Universe, differ from the nearby ones. New observational windows at ultraviolet, infrared and millimetric wavelengths (provided by ROSAT, IRAM, IUE, IRAS, ISO) have revealed that galaxies contain a wealth of components: very hot gas, atomic hydrogen, molecules, dust, dark matter ...

A significant advance is expected due to new instruments (VLT, FIRST, XMM) which will allow one to explore the most distant Universe. Three Euroconferences have been planned to punctuate this new epoch in galactic research, bringing together specialists in various fields of Astronomy.

Here, for the first time, in a brilliant, panoramic portrait by the Pulitzer Prize-winning author of The Making of the Atomic Bomb, is the definitive, often shocking story of the politics and the science behind the development of the hydrogen bomb and the birth of the Cold War. Based on secret files in the United States and the former Soviet Union, this monumental work of history discloses how and why the United States decided to create the bomb that would dominate world politics for more than forty years.

View your favorite constellations anytime, anywhere with the Tiny Planetarium! Bring the mystery and wonder of the night sky to your office or home with this charming miniature constellation projector! This kit includes: - a 3" star projector with a disk including 12 Hellenistic constellations - a 48-page illustrated mini book about the mythology and lore behind each constellation

Behold the moon in all its glory with this 54-card set of deluxe playing cards featuring phases of the moon as well as iconic Lunar modules.

The Workshop "Optical Detectors for Astronomy" was held during October 8-10, 1996 at the headquarters of the European Southern Observatory in Garching, Germany. This was the third meeting of its kind, previous meetings being held in 1991 and 1993, but this is the first ESO "CCD Workshop" that has published proceedings. Most of the leading manufacturers and major astronomical observatories were represented, with the 117 attendees coming together from 14 different countries that spanned every continent on Earth. The motivation for the ESO CCD Workshop series is the creation of informal and open venue of information exchange about astronomical CCD detectors and systems. Judging from the reaction and feedback of the participants, the 1996 workshop was as successful as the previous editions, which is a credit to all who attended. The Workshop was organized as a mixture of invited talks, oral presentations, poster sessions and roundtable discussions, the latter used to foster a free exchange of ideas among participants. These technical sessions were complemented by an opening reception and a congenial evening in downtown Munich, which included a walking tour of the historic area followed by dinner at the famous Franziskaner brewery and an after dinner talk by Walter Kosonocky, who reviewed the history of CCD technology.

This volume contains the fifteenth tri-annual reports of the Presidents of the forty Commissions of the International Astronomical Union; it refers to the progress in our discipline during the three years 1970, 1971 and 1972. As compared to earlier volumes a gradual change in character is unmistakable. The ever increasing flow of publications, combined with the obvious necessity to keep the Reports at a reasonable size and price level has gradually forced the Commission Presidents to be more selective than before in drafting their Reports. I have certainly stimulated them into that direction - in order that Reports like these be valuable and lasting, it seems imperative that the individual contributions have the character of a critical overall review, where a fairly complete summary is given of the major develop ments and discoveries of the past three years, and in which the broad developments and new trends be clearly outlined, while at the same time essential problems for future research are identified. With respect to the latter item I have suggested the Commission Presidents to add to their reports a brief section on scientific priorities for future research in the field of their Commissions. In order to save space I have suggested to Commission Presidents that references to published papers are given on the basis of their number in the published issues of Astronomy and Astrophysics Abstracts. For instance, the indication (06. 078. 019) or (AAA 06. 078."

Nothing captivates the human imagination like the vast unknowns of space. Ancient petroglyphs present renderings of the heavens, proof that we have been gazing up at the stars with wonder for thousands of years. Since then, mankind has systematically expanded our cosmic possibilities. What were once flights of fancy and dreams of science fiction writers have become nearly routine - a continuous human presence orbiting the Earth, probes flying beyond our solar system, and men walking on the moon. NASA and the Russian space program make traveling to the stars look easy, but it has been far from that. Space travel is a sometimes heroic, sometimes humorous, and always dangerous journey fraught with perils around every corner that most of us have never heard of or have long since forgotten. Space Oddities brings these unknown, offbeat, and obscure stories of space to life. From the showmanship and bravado of the earliest known space fatality, German Max Valier, to the first ever indictment under the Espionage Act on an Army officer who leaked secrets concerning the development of early U.S. rockets; and the story of a single loose bolt that defeated the Soviet Union's attempt to beat America to the moon. Author Joe Cuhaj also sheds light on the human aspects of space travel that have remained industry secrets - until now: how the tradition of using a musical playlist to wake astronauts up began, fascinating tales about inventions like the Fischer Space Pen, Omega watches, and even Tang breakfast drink. In addition to fun and entertaining space trivia, Space Oddities also features stories of the profound impact that space travel has had on challenges right here at home, like the effort by civil rights leaders and activists in the 1960s to bring the money from the space program back home to those in need on Earth; NASA's FLATs (First Lady Astronaut Training) program and the 25 women who were selected to become astronauts in 1960, but were denied a chance at flying even after successfully completing the rigorous astronaut training program; and, the animals who many times sacrificed their lives to prove that man could fly in space. Filled with rare and little-known stories, Space Oddities will bring the final frontier to the homes of diehard space readers and armchair astronauts alike.

In the past decade, indirect (Doppler) imaging techniques have opened up a whole new discipline in stellar astronomy, providing increasingly detailed photometric, magnetic, and chemical inhomogeneity images of stellar surfaces. Furthermore, new optical interferometers are already being used with sophisticated interferometer techniques to image stellar surface structures more directly, and in the future the ESO VLT Interferometer and other instruments will extend these capabilities enormously. These developments are highlighted in the first two sections of this book. The large number of recent results, ground-based and space-based, and the lack of a generally accepted dynamo theory with predictive power for the stars and the Sun, result in an ever-growing complexity of interpretation of individual results. The IAU Symposium 176 on Stellar Surface Structure' consequently focused on spatially resolved stellar observations throughout the H-R diagram, from O- and B-stars to late M-stars. Two further sections in this book summarize the current observational data on surface inhomogeneities in stellar photospheres, chromospheres, and coronae. Finally, a special section is devoted to next generation model atmospheres.

The study of the fine structure of solar radio emissions is key to understanding plasma processes in the solar corona. It remains a reliable means for both diagnosing the corona and verifying the results of laboratory plasma experiments on wave-wave and wave-particle interactions. This monograph provides a comprehensive review of the fine structure of solar radio bursts. Based on the diversity of experimental data resulting from the progress made in observational techniques, the validity of various theoretical models is reexamined. The book serves as an up-to-date reference work for all researchers in this field.

This book with its clear explanation of the nature of the universe assumes no prior knowledge of astronomy or cosmology and so will attract interested public and new amateur astronomers.It provides much more on large-scale structures than other popular-level cosmology books. The mix of cosmology /large scale structures/anthropic principle and perspective on the universe should, as far as the author knows, be unique. A special colour feature incorporated in the book will offer three-dimensional views of the surrounding universe to ever greater depths.

ROSAT Observations G. HASINGER Max-Planck-Institut flir extraterrestrische Physik, D-85740 Garching, Germany Abstract. This review describes the most recent advances in the study of the extragalactic soft X-ray background and what we can learn about its constituents. The deepest pointed observations with the ROSAT PSPC are discussed. The logN-logS relation is presented, which reaches to the faintest X-ray fluxes and to the highest AGN surface densities ever achieved. The N(>S) relation shows a 2 density in excess of 400 deg- at the faintest fluxes and a flattening below the Einstein Deep Survey limit. About 60% of the extragalactic background has been resolved in the deepest field. Detailed source spectra and first optical and radio identifications will be discussed. The results are put into perspective of the higher energy X -ray background. Key words: X-rays, background radiations, active galactic nuclei. 1. Introduction The extragalactic X-ray background (XRB), discovered about 30 years ago, has been studied extensively with many X-ray experiments, in particular with the satel lites HEAO I and II (see ego Boldt 1987) and with ROSAT (e. g. Hasinger et aI. , 1993). Figure 1 shows a compilation of some of the most recent spectral measure ments for the X-ray background. Over the energy range from 3 to about 100 keY its spectrum can be well approximated by an optically thin thermal bremsstrahlung model with kT ~ 40 keY, while at lower X-ray energies a steepening into a new component has been observed observed (e. g.

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.

This book describes the basic concepts of spacecraft operations for both manned and unmanned missions. The first part of the book provides a brief overview of the space segment. The next four parts deal with the classic areas of space flight operations: mission operations, communications and infrastructure, the flight dynamics system, and the mission planning system. This is followed by a part describing the operational tasks of the various subsystems of a classical satellite in Earth orbit. The last part describes the special requirements of other mission types due to the presence of astronauts, the approach of a satellite to another target satellite, or leaving Earth orbit in interplanetary missions and landing on other planets and moons. The 2nd edition is published seven years after the first edition. It contains four new chapters on flight procedures, the human factors, ground station operation, and software and systems. In addition, several chapters have been extensively expanded. The entire book has been brought up to date and the language has been revised. This book is based on the "Spacecraft Operations Course" held at the German Space Operations Center. However, the target audience of this book is not only the participants of the course, but also students of technical and scientific courses, as well as technically interested people who want to gain a deeper understanding of spacecraft operations.

In the first book which deals entirely with the subject of time in Africa and the Black Diaspora, Adjaye presents ten critical case studies of selected communities in Africa, the Caribbean, and the American South. The essays cover a wide spectrum of manifestations of temporal experience, including cosmological and genealogical time, physical and ecological cycles, time and worldview, social rhythm, agricultural and industrial time, and historical processes and consciousness. The studies confirm the continuity of temporal experience among Africans from pre-colonial times, through the colonial period in Africa, across continents through slavery and Maroon societies, to present-day communities like the Gullah of the Sea Islands of South Carolina. The subject of time, now recognized to be relative rather than uniform, draws together evidence from a variety of disciplines, specifically history, linguistics, political science, anthropology, and philosophy.

Few launch vehicles are as iconic and distinctive as NASA's behemoth rocket, the Saturn V, and none left such a lasting impression on those who watched it ascend. Developed with the specific brief to send humans to the Moon, it pushed rocketry to new scales. Its greatest triumph is that it achieved its goal repeatedly with an enviable record of mission success. Haynes' Saturn V Manual tells the story of this magnificent and hugely powerful machine. It explains how each of the vehicle's three stages worked; Boeing's S-IC first stage with a power output as great as the UK's peak electricity consumption, North American Aviation's S-II troubled second stage, Douglas's workhorse S-IVB third stage with its instrument unit brain - as much a spacecraft as a rocket. From the decision to build it to the operation of its engines' valves and pumps, this lavishly illustrated and deeply informative book offers a deeper appreciation of the amazing Saturn V.

Line intensity mapping (LIM) is an observational technique that probes the large-scale structure of the Universe by collecting light from a wide field of the sky. This book demonstrates a novel analysis method for LIM using machine learning (ML) technologies. The author develops a conditional generative adversarial network that separates designated emission signals from sources at different epochs. It thus provides, for the first time, an efficient way to extract signals from LIM data with foreground noise. The method is complementary to conventional statistical methods such as cross-correlation analysis. When applied to three-dimensional LIM data with wavelength information, high reproducibility is achieved under realistic conditions. The book further investigates how the trained machine extracts the signals, and discusses the limitation of the ML methods. Lastly an application of the LIM data to a study of cosmic reionization is presented. This book benefits students and researchers who are interested in using machine learning to multi-dimensional data not only in astronomy but also in general applications.

The publication of this book is extremely timely, for the next major advances in manned space flight after Project Apollo will most likely be made in earth orbital operations. Manned exploration of the moon will certainly continue after the initial landing, but it will be performed essentially with the Saturn V launch vehicles and Apollo spacecraft developed in Apollo, especially in the early phases. Modifications to this basic hardware will increase operating capabilities to permit extensive lunar explo ration during prolonged stay times by the astronauts on the moon's surface. Manned orbital space stations have been studied for years, and NASA is already well along in development of its first attempt to provide more spacious accommo dations for astronaut-scientists in its Saturn Workshop program. While the Workshop is certainly not the ultimate space station of which our technology is capable, it is a workable, poor man's approach to the immediate need for using and expanding our present manned space flight capability without a de trimentalloss of momentum. The approach of converting a Saturn rocket stage into a manned laboratory and observatory in space is an improvisation that matches the use of the jerry-built Jupiter C back in 1958 to launch Explorer I. Let's hope that it can get the job done just as effectively.