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Author: Sharon Cohen
Publisher: Hachette UK
ISBN: 1786540118
Category : Juvenile Fiction
Languages : en
Pages : 197
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Book Description
Bravery, friendship and the magic of an unknowable universe combine in this extraordinary adventure from the heart. Great for fans of Frank Cottrell Boyce and David Almond. In Ethiopia, Ageze has unearthed an ancient device that can make predictions. It tells him: there is a date, there is a place, there is a moment when it will happen. A disaster that will change everything. Halo Moon loves stars, and the night sky is full of them in her remote Yorkshire village. It's a place where nothing interesting ever happens, let alone a catastrophe. So when a stranger appears at the end of a near-impossible journey and tells her lives are at risk, she can barely believe it. But if she doesn't help Ageze, everything and everyone she knows might disappear for ever ... As Halo says: there's a hundred ways to start this story, a hundred ways to tell it. Each one is impossible. Each one, unbelievable. But it did all happen and I promise it's all true. HALO MOON is Sharon Cohen's second novel. Her first novel, THE STARMAN AND ME, was highly commended for the Branford Boase Award 2018 and shortlisted for the Essex Book Awards 2018. It has also been shortlisted for the East Sussex Children's Book Awards 2019 and nominated for the Northern Ireland Book Award 2019.
Author: Sharon Cohen
Publisher: Hachette UK
ISBN: 1786540118
Category : Juvenile Fiction
Languages : en
Pages : 197
Get Book Here
Book Description
Bravery, friendship and the magic of an unknowable universe combine in this extraordinary adventure from the heart. Great for fans of Frank Cottrell Boyce and David Almond. In Ethiopia, Ageze has unearthed an ancient device that can make predictions. It tells him: there is a date, there is a place, there is a moment when it will happen. A disaster that will change everything. Halo Moon loves stars, and the night sky is full of them in her remote Yorkshire village. It's a place where nothing interesting ever happens, let alone a catastrophe. So when a stranger appears at the end of a near-impossible journey and tells her lives are at risk, she can barely believe it. But if she doesn't help Ageze, everything and everyone she knows might disappear for ever ... As Halo says: there's a hundred ways to start this story, a hundred ways to tell it. Each one is impossible. Each one, unbelievable. But it did all happen and I promise it's all true. HALO MOON is Sharon Cohen's second novel. Her first novel, THE STARMAN AND ME, was highly commended for the Branford Boase Award 2018 and shortlisted for the Essex Book Awards 2018. It has also been shortlisted for the East Sussex Children's Book Awards 2019 and nominated for the Northern Ireland Book Award 2019.
Author: Hermann Hunger
Publisher: BRILL
ISBN: 9004294139
Category : Reference
Languages : en
Pages : 325
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Book Description
Astronomy and astrology, or the astral sciences, played an enormous, if not a key role in the political and religious life of the Ancient Near East, and, later, of the Greek and Roman world. This is the first comprehensive and up-to-date account of the origins of the astral sciences in the Ancient Near East. Every type of Sumerian or Akkadian text dealing with descriptive or mathematical astronomy, including many individual tablets are thoroughly dealt with. All aspects, such as the history of discovery, reconstruction, and interpretation come to the fore, accompanied by a full bibliography. At that the reader will find descriptions of astronomical contents, an explanation of their scientific meaning and the place a given genre or tablet has in the development of astronomy both within the Mesopotamian culture and outside of it. Because celestial omens are intimately related to astronomy in Mesopotamian science, these are also discussed extensively. The material is arranged both chronologically and thematically, so as to help make Astral Sciences in Mesopotamia a reference work on the subject in its truest sense.
Author: Norske videnskaps-akademi i Oslo
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 722
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
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Book Description
Author: Jeffrey S. Parker
Publisher: John Wiley & Sons
ISBN: 1118855310
Category : Technology & Engineering
Languages : en
Pages : 452
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Book Description
Based on years of research conducted at the NASA Jet Propulsion Laboratory, Low-Energy Lunar Trajectory Design provides high-level information to mission managers and detailed information to mission designers about low-energy transfers between Earth and the moon. The book answers high-level questions about the availability and performance of such transfers in any given month and year. Low-energy lunar transfers are compared with various other types of transfers, and placed within the context of historical missions. Using this book, designers may reconstruct any transfer described therein, as well as design similar transfers with particular design parameters. An Appendix, “Locating the Lagrange Points,” and a useful list of terms and constants completes this technical reference. Surveys thousands of possible trajectories that may be used to transfer spacecraft between Earth and the moon, including transfers to lunar libration orbits, low lunar orbits, and the lunar surface Provides information about the methods, models, and tools used to design low-energy lunar transfers Includes discussion about the variations of these transfers from one month to the next, and the important operational aspects of implementing a low-energy lunar transfer Additional discussions address navigation, station-keeping, and spacecraft systems issues
Author: Harvard College Observatory
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 350
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Book Description
List of quarto publications, exclusive of the Annals , made by the officers of the observatory from 1877 to 1896, with references to the work of the Blue Hill observatory from 1885 to 1895: v. 30, p. 3-8.
Author: Elisa Maria Alessi
Publisher: Frontiers Media SA
ISBN: 2889630447
Category :
Languages : en
Pages : 156
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Book Description
The Earth-Moon neighborhood is the scene of a large variety of applications that concern asteroids, lunar exploration and space debris in Earth orbit. In particular, recent efforts by the scientific community have focused on the possibility of extending the human operations beyond the radiation belts; of exploiting in-situ resources, either on the lunar surface or on asteroids retrieved to the vicinity of the Earth; and of mitigating the space debris concern by taking advantage of the lunar perturbation. The characteristic dynamics in the cislunar space represents an opportunity for the mission designer, but also a challenge in terms of theoretical understanding and operational control. This Research Topic covers the Earth-Moon dynamics in its complexity and allure, considering the most relevant aspects for both natural and artificial objects, in order to get a new comprehension of the dynamics at stake along with the operational procedures that can handle it.
Author: Max Cerf
Publisher: John Wiley & Sons
ISBN: 1394293801
Category : Technology & Engineering
Languages : en
Pages : 469
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Book Description
An authoritative reference that covers essential concepts of orbital mechanics and explains how they relate to advanced space trajectory applications Space Trajectories is the first book to offer a comprehensive exploration of orbital mechanics and trajectory optimization in a single volume. Beginning with a review of essential concepts, the book progresses to advanced space applications, highlighting methods used in today’s space missions. The contents are organized into three parts. The first part delves into free orbital motion, covering topics such as Keplerian motion, perturbed motion, the three-body problem, orbit determination, and collision risks in orbit. The second part focuses on controlled orbital motion, discussing impulsive transfer, orbital rendezvous, thrust level optimization, low-thrust transfer, and space debris cleaning. The third part examines ascent and reentry, including launch into orbit, launcher staging, analytical solutions in flat Earth, interplanetary missions, and atmospheric reentry. Each chapter is written in a modular way, featuring conclusion summaries, key points, and suggestions for further investigation. Examples are included with detailed solutions methods that readers can apply to solve their own trajectory problems. Written by an expert of the topic who has performed guidance of Ariane launchers for 30 years, Space Trajectories includes information on: Keplerian motion, motion time law, universal formulation, equinoctial parameters, and Lagrange coefficients Osculating orbit, Gauss equations, gravitational and third body perturbations, Lissajous and Halo orbits, and invariant manifolds Astrometry measurements, Kalman filtering, orbit uncertainties, and collision probability Transfer in one, two, or three impulses, minimum-energy transfer, Lambert’s problem, high- and low-thrust transfer, and interplanetary path Launch and reentry trajectories, propulsion systems, optimized thrust profiles, and launcher staging Space Trajectories is an essential reference for students and researchers aiming to quickly understand the main issues in astrodynamics and the way to design trajectories, as well as space engineers seeking to consolidate their knowledge in the field of optimization and optimal control applied to aerospace and space missions.
Author: Ashurbanipal (King of Assyria)
Publisher: Eisenbrauns
ISBN: 9781575061382
Category : Foreign Language Study
Languages : en
Pages : 584
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Book Description
Eisenbrauns is pleased to announce this quality reprint of Simo Parpola's classic work, Letters from Assyrian Scholars to the Kings Esarhaddon and Assurbanipal. "Part II: Commentary and Appendices" originally appeared in 1983 as AOAT 5/2
Author:
Publisher:
ISBN:
Category : English periodicals
Languages : en
Pages : 754
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Book Description
