Gerda Horneck - Böcker

How did life begin on Earth? Is it confined to our planet? Will humans one day be able to travel long distances in space in search of other life forms? Written by three experts in the space arena, Looking for Life, Searching the Solar System aims to answer these and other intriguing questions. Beginning with what we understand of life on Earth, it describes the latest ideas about the chemical basis of life as we know it, and how they are influencing strategies to search for life elsewhere. It considers the ability of life, from microbes to humans, to survive in space, on the surface of other planets, and be transported from one planet to another. It looks at the latest plans for missions to search for life in the Solar System, and how these are being influenced by new technologies, and current thinking about life on Earth. This fascinating and broad-ranging book is for anyone with an interest in the search for life beyond our planet.

How did life begin on Earth? Is it confined to our planet? Will humans one day be able to travel long distances in space in search of other life forms? Written by three experts in the space arena, Looking for Life, Searching the Solar System aims to answer these and other intriguing questions. Beginning with what we understand of life on Earth, it describes the latest ideas about the chemical basis of life as we know it, and how they are influencing strategies to search for life elsewhere. It considers the ability of life, from microbes to humans, to survive in space, on the surface of other planets, and be transported from one planet to another. It looks at the latest plans for missions to search for life in the Solar System, and how these are being influenced by new technologies, and current thinking about life on Earth. This fascinating and broad-ranging book is for anyone with an interest in the search for life beyond our planet.

Human health, aquatic, and terrestrial ecosystems are all under threat from increasing levels of environmental radiation from a variety of sources, many of them anthropogenic. This book surveys the state of our knowledge of the fundamental processes that result from the interaction of environmental (both ionizing and UV) with living matter. Concepts of risk estimation and radiation protection are also considered. The book covers the consequences of radioactive pollution from accidents to nuclear power plant, especially in large areas of the former Soviet Union; the global problem of an increase in the incidence of UVB radiation at the earth's surface due to the depletion of the stratospheric ozone layer; the increase of natural radiation levels in areas of former uranium mining; and the increased levels of natural radiation experienced in air travel and space flight.

Human health, aquatic, and terrestrial ecosystems are all under threat from increasing levels of environmental radiation from a variety of sources, many of them anthropogenic. This book surveys the state of our knowledge of the fundamental processes that result from the interaction of environmental (both ionizing and UV) with living matter. Concepts of risk estimation and radiation protection are also considered. The book covers the consequences of radioactive pollution from accidents to nuclear power plant, especially in large areas of the former Soviet Union; the global problem of an increase in the incidence of UVB radiation at the earth's surface due to the depletion of the stratospheric ozone layer; the increase of natural radiation levels in areas of former uranium mining; and the increased levels of natural radiation experienced in air travel and space flight.

Space missions subject human beings or any other target of a spacecraft to a radiation environment of an intensity and composition not available on earth. Whereas for missions in low earth orbit (LEO), such as those using the Space Shuttle or Space Station scenario, radiation exposure guidelines have been developed and have been adopted by spacefaring agencies, for exploratory class missions that will take the space travellers outside the protective confines of the geomagnetic field sufficient guidelines for radiation protection are still outstanding. For a piloted Mars mission, the whole concept of radiation protection needs to be reconsidered. Since there is an increasing interest of many nations and space agencies in establishing a lunar base and lor exploring Mars by manned missions, it is both, timely and important to develop appropriate risk estimates and radiation protection guidelines which will have an influence on the design and structure of space vehicles and habitation areas of the extraterrestrial settlements. This book is the result of a multidisciplinary effort to assess the state of art in our knowledge on the radiation situation during deep space missions and on the impact of this complex radiation environment on the space traveller. It comprises the lectures by the faculty members as well as short contributions by the students given at the NATO Advanced Study Institute "Biological Effects and Physics of Solar and Galactic Cosmic Radiation" held in Armacao de Pera, Portugal, 12-23 October, 1991.

Space missions subject human beings or any other target of a spacecraft to a radiation environment of an intensity and composition not available on earth. Whereas for missions in low earth orbit (LEO), such as those using the Space Shuttle or Space Station scenario, radiation exposure guidelines have been developed and have been adopted by spacefaring agencies, for exploratory class missions that will take the space travellers outside the protective confines of the geomagnetic field sufficient guidelines for radiation protection are still outstanding. For a piloted Mars mission, the whole concept of radiation protection needs to be reconsidered. Since there is an increasing interest ci many nations and space agencies in establishing a lunar base and lor exploring Mars by manned missions, it is both, timely and important to develop appropriate risk estimates and radiation protection guidelines which will have an influence on the design and structure of space vehicles and habitation areas of the extraterrestrial settlements. This book is the result of a multidisciplinary effort to assess the state of art in our knowledge on the radiation situation during deep space missions and on the impact of this complex radiation environment on the space traveller. ]t comprises the lectures by the faculty members as well as short contributions by the students given at the NATO Advanced Study Institute "Biological Effects and Physics of Solar and Galactic Cosmic Radiation" held in Armacao de Pera, Portugal, 12-23 October, 1991.