Astronomiske observationer: observatorier, udstyr og metoder

Earth has limited material and energy resources, while these resources are virtually unlimited in space. It is only a matter of time, before planetary resources are mined and used in-situ to sustain human and robotic exploration or returned to Earth for commercial gain. This book covers a number of aspects related to space resources. In particular, subjects related to mission concepts, exploration approaches, mining and extraction technologies, commercial potential, and regulatory aspects of space resources are covered in detail. This book is therefore a good resource for readers who seek background and deeper understanding of space resources related activities.

Using machine and deep learning techniques the authors introduce pre-processing methods applied to satellite images to identify land cover features, detect object, classify crops, recognize targets, and monitor and support earth resources. Readers will need a basic understanding of computing, remote sensing and image interpretation.

This book is a comprehensive reference on ancient Egyptian astronomy, one of the most important topics in historical astronomy. Written by two recognized specialists¿one an astronomer trained in Egyptology and the other an Egyptologist trained in astronomy¿it synthesizes and analyses the international body of research surrounding this ancient culture.The chapters in this work address all major topics in the field, including Egyptian cosmogony and worldview, timekeeping devices and calendars, landscapes and skyscapes, astronomy-influenced architecture, chronology and more. Each chapter includes an introduction, an overview of the existing documentation on the subject, a critical discussion of ongoing debates and questions, and a presentation of state-of-the-art research.Straddling the line between Egyptology and astronomy, this multidisciplinary book will appeal to any scholar or specialist interested in studying ancient Egyptianastronomy.

The Bioethics of Space Exploration provides a comprehensive discussion of the possible bioethical issues and challenges that may arise when considering future long-term space missions. Because of numerous threats within the space environment, many consider the concept of radically modifying humans to be a serious and perhaps even necessary option. Konrad Szocik presents what types of ethical and bioethical challenges may await participants on commercial, scientific, and colonizing missions, and provides a new perspective into the potential for radical biomedical technologies.

En lyd i natten, et gulv, der knirker, og et værelse, der bliver foruroligende køligt. De er set i alle former og farver, fra dystre grå damer til kulørte mareridt.I årtier har efterforskere og medier viet deres liv til at trænge gennem sløret og få kontakt med den anden side. Uanset om spøgelser er de dødes sjæle, huller i tiden eller væsener fra andre dimensioner, så har vi reageret med frygt og fascination på deres skrækindjagende spøgerier.Tag med på en gennemillustreret spændende og fantasifuld rejse i de myter, legender og sære historier, der findes om spøgelser.Denne nervepirrende illustrerede fagbog for børn giver en historisk indsigt over genfærd og spøgelser fra forskellige lande op gennem tiden. Bogen består af seks kapitler fra forhistorien til det 21. århundrede.Bogens illustrationer består af små tegninger, helsides tegninger og tegneserier. Indeholder desuden indholdsfortegnelse, ordliste og stikordsregister.Selvlæsning fra 10+

This book presents the first comprehensive exploration of the state of this well studied and thus unsolved mystery of the value of the Hubble constant. Chapters covering data, systematics, independent methodologies, and theoretical explanations are authored by distinguished subject-matter experts. Tailored for scientists in the field or adjacent fields, this book provides a resource of insights and also an in-depth background sufficient for motivating future study. Key Features: Introduction: Written by the Nobel Laureate Adam Riess. Measurement Techniques: Gain a profound understanding of the leading Hubble constant measurement techniques, from parallax and masers to supernovae and cosmic chronometers, dissected by leading authorities on each. Systematic Errors: A deep dive into the complexities of data. Experts scrutinize potential sources of systematics that may contribute to the observed disagreements, offering a nuanced view of the challenges in Hubble constant determinations. Theoretical Explanations and Progress: A review of the theoretical explanations, some that are still standing, and some that have been ruled out; all of which have led to scientific progress toward the truth. A Comprehensive Take: This book covers every key and influential aspect to the dilemma of the Hubble tension to date and has gathered world-leading voices on each respective topic.

This volume provides an overview of the fast-developing field of tidal disruption events. For several decades, astronomers speculated that a hapless star could wander too close to a massive black hole and be torn apart by tidal forces. Yet it is only with the recent advent of wide-field transient surveys that such events have been detected.Written by a team of prominent researchers, the chapters detail the discoveries made so far in this burgeoning field of study across the entire electromagnetic spectrum, from gamma-rays through X-rays, ultra-violet, optical, infrared, and radio. In addition, they show how tidal disruption events can be used to study the properties of otherwise undetectable supermassive black holes; the populations and dynamics of stars in galactic nuclei; the physics of black hole accretion, including the potential to detect relativistic effects near a SMBH; and the physics of (radio) jet formation and evolution in a pristine environment.Finally,the book outlines important outstanding questions about TDEs. With more than 100 color images, the volume will be useful to researchers and others interested in learning more about this promising area of astrophysics.Previously published in Space Science Reviews in the Topical Collection ¿The Tidal Disruption of Stars by Massive Black Holes¿

Tina Ibsen interviewer Jens Frydenvang, der har deltaget i styringen af Marsrobotterne, Morten Bo Madsen, der har udviklet eksperimenter til undersøgelse af Marsstøvets sammensætning, og Line Drube, der har deltaget i projektet Mars Desert Research Station i Utah, hvor man undersøger, hvordan man kan bo og arbejde sammen under fremtidens Marsmissioner.

Case Studies in Star Formation offers an overview of our current observational and theoretical understanding in the molecular astronomy of star formation. The book is divided into six sections: the first introduces an overview of star formation and the essential language, concepts and tools specific to molecular astronomy studies. Each subsequent section focuses on individual sources, beginning with a description of large-scale surveys. The volume covers low- and high mass star formation, ionization and photodissociation regions, and concludes with the extragalactic perspective. Conventional textbooks begin with principles, ending with a few convenient examples. Through copious examples, Case Studies reflects the reality of research, which requires the creative matching of ongoing observations to theory and vice-versa, often raising as many questions as answers. This supplementary study guide enables graduate students and early researchers to bridge the gap between textbooks and the wealth of research literature.

This book highlights the fundamental physics of orbit theory, dynamical models, methods of orbit determination, design, measurement, adjustment, and complete calculations for the position, tracking, and prediction of satellites and deep spacecraft. It emphasizes specific methods, related mathematical calculations, and worked examples and exercises. Therefore, technicians and engineers in the aerospace industry can directly apply them to their practical work. Dedicated to undergraduate students and graduate students, researchers, and professionals in astronomy, physics, space science, and related aerospace industries, the book is an integrated work based on the accumulated knowledge in satellite orbit dynamics and the author¿s more than five decades of personal research and teaching experience in astronomy and aerospace dynamics.

Unlocking the secrets of the Universe involves the critical application of the laws of physics to the observations. This Very Short Introduction describes how we are turning observations into knowledge and how theory, in turn, is inspiring new observations.

A perfect book for anyone wishing to learn more about our local star, eclipses and the Northern LightsThe Sun is incredibly dynamic and shrouded in mystery, despite its apparent unchanging appearance in the daytime sky. In this guide, Dr. Ryan French explores history, science and modern observations to uncover the mysteries of the Sun.

The XIXth General Assembly of the International Astronomical Union was held in New Delhi, India, from November 19 to 28, 1985. It was dedicated to the memory of a former IAU President, Professor M. K. V. Bappu, who tragically passed away on August 19, 1982. On the occasion of the Delhi General Assembly, the IAU Minor Planet Center announced that Minor Planet (asteroid) No. 2596 henceforth will carry the name Vainu Sappu. The full text of the announcement reads: "e;(2596) VAINU BAPPU = 1979 KN (diameter about 8 kilometers, period 5 years 4 months, mean distance from the Sun around 450 million kilometers) Discovered 1979, May 19, by R. M. West at the European Southern Observatory. Named in memory of Manali f

For anyone artistically inclined, observing the Moon and attempting to sketch or paint it can easily become a passion. The Moon presents a broad array of tone, texture, and form. Capturing this in a painting or sketch at the eyepiece of a telescope - or even with binoculars - develops observational skills, leaves a record of the observation, and can also be a delightful and rewarding pastime. However, the choice of media available is extensive (acrylic paint, oils, pen, charcoal, etc., and even computer art programs), and there is no existing text that fully explains all lunar sketching and painting techniques in each respective medium. This beautiful and graphically rich book fulfills this requirement. It presents detailed step-by-step instructions, in the form of illustrated tutorials for every major medium employed to represent the Moon. It also provides practical advice on how to sketch outdoors at night (not ideal conditions for an artist!). This is easily the most extensive book on the subject of lunar art for amateur astronomers, particularly those observing through a telescope. The diverse features of the lunar surface will attract and entice readers to review the number of different media presented, exciting and inspiring them with the possibilities of learning to depict all of the fascinating aspects of Earth's very own satellite.

The Casual Sky Observer's Pocket Guide offers an observing program for occasional amateur observers looking for some quick, fun astronomy adventures under the stars. In the real world, where time for observing is limited, the weather is seldom perfect, and expensive equipment is not an option, amateur astronomy may not be seen as a worthwhile activity. However, portable and quick-to-set-up instruments are available. A pair of binoculars or a small telescope fills the bill. And the way to make the most of these instruments is described in the Casual Sky Observer's Pocket Guide. Not only does the book feature the best and brightest showpieces of the heavens; it also provides a great deal of physical and environmental data as well as lots of fascinating information and beautiful illustrations that provide a unique perspective on the many treasures within and beyond our home galaxy, the Milky Way--stars, star clusters, other galaxies, and nebulae, all within reach of binoculars or a small telescope.