This book offers an overview of solar physics with a focus on solar activity, particularly the activity cycle. It is known that solar activity varies periodically, but there are also phases of intermittency, such as the Maunder minimum, during which solar activity is very low or high over several decades. The book provides a brief introduction to chaos theory and investigates solar activity in terms of its chaotic behavior. It also discusses how intermittent phases of solar activity have affected and can affect Earth's climate and long-term space weather, and reviews the underlying theories relating to the solar dynamo mechanism. Furthermore, each chapter includes references to scientific literature (review articles and papers) so that readers can delve deeper into the subjects covered. This richly illustrated book will appeal to a wide readership, and is also useful as a textbook for courses in solar physics and astrophysics.

This book offers an overview of solar physics with a focus on solar activity, particularly the activity cycle. It is known that solar activity varies periodically, but there are also phases of intermittency, such as the Maunder minimum, during which solar activity is very low or high over several decades. The book provides a brief introduction to chaos theory and investigates solar activity in terms of its chaotic behavior. It also discusses how intermittent phases of solar activity have affected and can affect Earth's climate and long-term space weather, and reviews the underlying theories relating to the solar dynamo mechanism. Furthermore, each chapter includes references to scientific literature (review articles and papers) so that readers can delve deeper into the subjects covered. This richly illustrated book will appeal to a wide readership, and is also useful as a textbook for courses in solar physics and astrophysics.

A trio of editors [Professors from Austria, Germany and Israel] present Life on Earth and other Planetary Bodies. The contributors are from twenty various countries and present their research on life here as well as the possibility for extraterrestrial life. This volume covers concepts such as life's origin, hypothesis of Panspermia and of life possibility in the Cosmos. The topic of extraterrestrial life is currently 'hot' and the object of several congresses and conferences. While the diversity of "normal" biota is well known, life on the edge of the extremophiles is more limited and less distributed. Other subjects discussed are Astrobiology with the frozen worlds of Mars, Europa and Titan where extant or extinct microbial life may exist in subsurface oceans; conditions on icy Mars with its saline, alkaline, and liquid water which has been recently discovered; chances of habitable Earth-like [or the terrestrial analogues] exoplanets; and SETI's search for extraterrestrial Intelligence.

Due to its specific chemical and physical properties, water is essential for life on Earth. And it is assumed that this would be the case for extraterrestrial life as well. Therefore it is important to investigate where water can be found in the Universe. Although there are places that are completely dry, places where the last rainfall happened probably several 100 million years ago, surprisingly this substance is quite omnipresent. In the outer solar system the large satellites of Jupiter and Saturn are covered by a thick layer of ice that could be hiding a liquid ocean below. This of course brings up the question of whether the recently detected extrasolar planets could have some water on their surfaces and how we can detect this. Water molecules are also found in interstellar gas and dust clouds. This book begins with an introductory chapter reviewing the physical and chemical properties of water. Then it illuminates the apparent connection between water and life. This is followed by chapters dealing with our current knowledge of water in the solar system, followed by a discussion concerning the potential presence and possible detection of water on exoplanets. The signature of water in interstellar space and stars are reviewed before the origin of water in the Universe is finally discussed. The book ends with an appendix on detection methods, satellite missions and astrophysical concepts touched upon in the main parts of the book. The search for water in the Universe is related to the search for extraterrestrial life and is of fundamental importance for astrophysics, astrobiology and other related topics. This book therefore addresses students and researchers in these fields.

A trio of editors [Professors from Austria, Germany and Israel] present Life on Earth and other Planetary Bodies. The contributors are from twenty various countries and present their research on life here as well as the possibility for extraterrestrial life. This volume covers concepts such as life's origin, hypothesis of Panspermia and of life possibility in the Cosmos. The topic of extraterrestrial life is currently 'hot' and the object of several congresses and conferences. While the diversity of "normal" biota is well known, life on the edge of the extremophiles is more limited and less distributed. Other subjects discussed are Astrobiology with the frozen worlds of Mars, Europa and Titan where extant or extinct microbial life may exist in subsurface oceans; conditions on icy Mars with its saline, alkaline, and liquid water which has been recently discovered; chances of habitable Earth-like [or the terrestrial analogues] exoplanets; and SETI's search for extraterrestrial Intelligence.

This book presents comprehensive coverage of the Sun and space weather, two rapidly evolving topics. In this new edition, the information has been updated to include the latest results. In addition, new sections are included, like one on space weather data sources, as well as examples and information on new satellite missions.

Due to its specific chemical and physical properties, water is essential for life on Earth. And it is assumed that this would be the case for extraterrestrial life as well. Therefore it is important to investigate where water can be found in the Universe. Although there are places that are completely dry, places where the last rainfall happened probably several 100 million years ago, surprisingly this substance is quite omnipresent. In the outer solar system the large satellites of Jupiter and Saturn are covered by a thick layer of ice that could be hiding a liquid ocean below. This of course brings up the question of whether the recently detected extrasolar planets could have some water on their surfaces and how we can detect this. Water molecules are also found in interstellar gas and dust clouds. This book begins with an introductory chapter reviewing the physical and chemical properties of water. Then it illuminates the apparent connection between water and life. This is followed by chapters dealing with our current knowledge of water in the solar system, followed by a discussion concerning the potential presence and possible detection of water on exoplanets. The signature of water in interstellar space and stars are reviewed before the origin of water in the Universe is finally discussed. The book ends with an appendix on detection methods, satellite missions and astrophysical concepts touched upon in the main parts of the book. The search for water in the Universe is related to the search for extraterrestrial life and is of fundamental importance for astrophysics, astrobiology and other related topics. This book therefore addresses students and researchers in these fields.

The evolution of life on Earth during the last four billion years has not been uniform. Several distinct periods of mass extinction are known, the last led to the extinction of the dinosaurs some 60 million years ago. The causes for these mass extinctions are, at least in some cases, cosmic catastrophes, such as impacts of asteroid sized bodies, nearby supernova explosions etc. It is also well known that the last ice ages are triggered by variations of different parameters of the Earth'r orbit about the Sun. Cosmic catastrophes therefore have to be considered when evolution of life on planets are discussed, especially the question of habitability on them.
In this book we first discuss habitability not only on planets (in the solar system as well in extrasolar planetary systems) but also on satellites of giant planets. Life needs some energy source which is provided either by the central star of a planetary system or by tidal forces exerted by a giant planet on a large satellite of it. On Earth it took about four billion years for intelligent life to evolve. Such a long time span (which is about 1/3 of the total age of the universe) requires rather stable conditions. We therefore investigate in detail how cosmic catastrophes may destroy life, and at the same time lead to the evolution of new species. Catastrophes therefore seem to be essential for evolution to higher lifeforms.
With the recent advances of biology, the detection of extrasolar planetary systems, the great advancement of our knowledge about the chemical and physical processes that enable life, these questions can be answered in much more detail than several years ago. The reader is provided with an introduction into the various topics and for further details recent literature is cited. It will be also stressed that the evolution of life on Earth is not only connected with the existence of a stable long-lived star, the Sun, but also depends on conditions and distribution of mass in the planetary system (the existence of giant planets at a certain distance from the Sun), the existence of the Moon (which stabilizes the Earth's rotational axis), the location of the solar system in the galaxy and other factors. Primitive forms of life, however, may require less stringent environmental conditions as the detection of extremophiles has proven.

This second edition contains new sections such as space weather data sources and examples, new satellite missions, and latest results. The importance of the Sun for the Earth, life on Earth, climate and weather processes was recognized long ago by the ancients. Now, for the first time, there is a continuous surveillance of solar activity at nearly all wavelengths. These data can be used to improve our understanding of the complex Sun-Earth interaction. Since the field is quite interdisciplinary, the book will be of interest to scientists working in different fields such as solar physics, geophysics, and space physics.

Die Beobachtungsmöglichkeiten der modernen Astrophysik werden immer zahlreicher. Sie reichen von optischen Teleskopen über Weltraumteleskope im Infraroten bis zu Radioteleskopen und von Gravitationswellendetektoren bis hin zu Neutrinoobservatorien. Während die einen im Weltraum ein Augenmerk auf das Licht werfen, nehmen andere unter Wasser kleinste Teilchen unter die Lupe oder messen Störungen der Raumzeit, die kleiner sind als der Durchmesser eines Protons. Das Buch bietet einen spannenden umfassenden Überblick über unsere technischen Möglichkeiten, das Universum zu erforschen. Als Grundlage für eine Vorlesung in Astronomie bzw. Astrophysik ist es ebenso geeignet wie als Lektüre für naturwissenschaftlich Interessierte.

Dieses Lehrbuch vermittelt das theoretische und praktische Grundwissen der Astronomie und Astrophysik. Es bietet eine UEbersicht von der klassischen Astronomie und Beobachtungsmethoden bis hin zur Sonnenphysik und Astrophysik der Sterne und Galaxien. Den Abschluss bilden Kapitel zur Kosmologie, Astrobiologie sowie mathematische und numerische Methoden. Zahlreiche farbige Abbildungen, Rechenbeispiele sowie Aufgaben mit Loesungen machen das Werk zu einem nutzlichen Begleiter der Astronomie-Vorlesungen im Studium. Das Buch eignet sich fur Studierende der Physik und Astronomie auf Lehramt oder im Bachelor - aber auch an Naturwissenschaften interessierte Personen mit entsprechendem mathematisch-physikalischem Basiswissen finden hier einen ansprechenden Einstieg in das Thema. Die vorliegende vierte Auflage wurde hinsichtlich der neuesten Entwicklungen in der Astronomie aktualisiert und uberarbeitet. Das Kapitel uber mathematische Methoden wurde neu gestaltet und als Software wird nun ausschliesslich Python verwendet. Aus dem Inhalt: Spharische Astronomie - Geschichte der Astronomie - Himmelsmechanik - Astronomische Instrumente - Physik der Koerper des Sonnensystems - Die Sonne - Zustandsgroessen der Sterne - Sternatmospharen - Sternaufbau - Sternentwicklung - Interstellare Materie - Die Galaxis - Extragalaktische Systeme - Kosmologie - Astrobiologie - Mathematische Methoden

Dieses Buch zeigt, wie spannend Astronomie sein kann. Mit einfachen Beobachtungen kann man wichtige Fragen der Menschheit eroertern: Wie ist das Universum entstanden und wo ist unser Platz darin? Der Leser erhalt praktische Informationen, um die Faszination des Nachthimmels selbst zu erleben: Welches Teleskop ist geeignet, welche Details lassen sich damit auf den Himmelskoerpern erkennen u.v.m.. Der Autor beschreibt die Planetenbewegungen und wann selbige zu beobachten sind. Tipps zur Fotografie der Himmelskoerper mit Digitalkameras oder Webcams werden ebenfalls gegeben. Neben Anleitungen zu eigenen Beobachtungen erhalt der Leser auch astrophysikalisches Hintergrundwissen zu den Fragen "Wie entstehen Sterne und Planeten?", "Gibt es auf den neu gefundenen Exoplaneten Leben?" und "Was ist Dunkle Materie?". Mit diesem Buch werden die Wunder des Universums rasch zu einer Freude. Aber Vorsicht: Sternegucken kann suchtig machen.

'The whole text is written in a clear and light scientific style. It is fully referenced to scientific publications and supported by numerous figures, mainly in full colour ... The present book can be recommended to any interested reader with a background in physics and/or astronomy, in particular to undergraduate and graduate students within astronomy and related fields, possibly being also of interest to scientists in (evolutionary) biology.'Contemporary PhysicsThe search for exoplanets and habitable objects in general is one of the fastest growing and most prominent fields in modern astrophysics. This book provides an overview on habitability on exoplanets. Habitability is strongly dependent on stellar activity. Therefore, space weather effects on objects in the solar system as well as on exoplanets are discussed.The concept of the book is to introduce the topics and then discuss actual scientific papers so that the interested reader has access to most recent research. Therefore the book is valuable to undergraduate students as well as to graduate students and researchers.