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Vie extraterrestre --- Vie --- Exobiologie
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Exobiology --- Life --- Exobiologie --- Vie --- Origin --- Origines
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Astrobiology involves the study of the origin and history of life on Earth, planets and moons where life may have arisen, and the search for extraterrestrial life. It combines the sciences of biology, chemistry, palaeontology, geology, planetary physics and astronomy. This textbook brings together world experts in each of these disciplines to provide the most comprehensive coverage of the field currently available. Topics cover the origin and evolution of life on Earth, the geological, physical and chemical conditions in which life might arise and the detection of extraterrestrial life on other planets and moons. The book also covers the history of our ideas on extraterrestrial life and the origin of life, as well as the ethical, philosophical and educational issues raised by astrobiology. Written to be accessible to students from diverse backgrounds, this text will be welcomed by advanced undergraduates and graduates who are taking astrobiology courses.
Exobiologie --- Exobiology --- Vie extraterrestre --- Life on other planets --- Exobiology. --- Life on other planets. --- Exobiologie. --- Vie extraterrestre.
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Life on other planets. --- Exobiology. --- Vie extraterrestre --- Exobiologie
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Sommes-nous seuls dans l'Univers ? La Terre, le vivant seraient-ils uniques dans le cosmos ? Aucune des millions, des milliards de planètes qui peuplent l'Univers ne serait-elle donc habitée ? Cette vision est biaisée, nous prévient ici Jean-Pierre Bibring : aucun argument solide ne nous permet d'affirmer que ce que nous appelons "vivant" existe ailleurs que sur ce minuscule îlot cosmique et vagabond qu'est la Terre. Au contraire, depuis que nous explorons l'espace, tout semble montrer que notre planète, née d'une longue chaîne d'événements fortuits et de hasards, est unique en son genre. Et le vivant serait terrien par essence.
Vie (biologie) --- Exobiologie --- Exobiology --- Life (Biology) --- Outer space
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"The Chemical Evolution of Phosphorus : An Interdisciplinary Approach to Astrobiology" is an exploration of "the phosphorus enigma." The volume attempts to answer the questions How did phosphorus atoms, which are produced inside the inner cores of a handful of huge stars, become concentrated in relatively high proportions in the organisms composing Earth's biosphere? And how did these phosphate derivatives manage to be included in such a great variety of organic molecules playing essential biochemical roles in all known life forms? Due to the interdisciplinary nature of the topic, the volume is arranged in three main sections. The first section introduces the fundamental concepts and notions of physics, chemistry, and biology necessary for the proper understanding of the topics discussed within an astronomical framework. It covers the basic features of astrophysics, cosmochemistry, and astrobiology disciplines and provides a brief summary of the main physical and chemical properties of phosphorus compounds of interest. The second section focuses on the role of phosphorus and its compounds within the context of chemical evolution in galaxies. Following an interdisciplinary approach, the author discusses the position of P among the main biogenic elements by considering its relevance in most essential biochemical functions as well as its peculiar chemistry under different physicochemical conditions. The phosphorus distribution in different cosmic sites, such as terrestrial planets, interplanetary dust particles, cometary dust, planetary atmospheres, and the interstellar medium (ISM) is reviewed, showing that this element is both scarce and ubiquitous in the universe. Also addressed are some possible routes allowing for the incorporation of phosphorus compounds of prebiotic interest during the earlier stages of solar system formation. The third section features an overall perspective on the role of phosphorus and its compounds in current areas of research of solid state physics, materials engineering, nanotechnology or medicine, as well as some perspectives for future work in order to properly solve the enigma of phosphorus in chemical evolution. The book can be used as reader-friendly resource for undergraduate, graduate, or postgraduate students, senior scientists, and researchers coming from diverse related fields of physics, chemistry, and materials science, as well as senior scientists interested in primary sources of the main biogenic elements.
Phosphorus. --- Molecular evolution. --- Exobiology. --- Phosphore. --- Évolution moléculaire. --- Exobiologie.
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Life on other planets --- Exobiology --- Vie extraterrestre. --- Exobiologie.
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Evolution --- Evolution chimique --- Vie --- Origines --- Géobiologie. --- Evolution moleculaire. --- Exobiologie. --- Origines. --- Vie - Origines.
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How did life on Earth begin ? How common is it elsewhere in the Universe ? Written and edited by planetary scientists and astrobiologists, this undergraduate-level textbook provides an introduction to the origin and nature of life, the habitable environments in our solar system and the techniques most successfully used for discovery and characterisation of exoplanets. This third edition has been thoroughly revised to embrace the latest developments in this field. Updated topics include the origins of water on Earth, the exploration of habitable environments on Mars, Europa and Enceladus, and the burgeoning discoveries in exoplanetary systems. Ideal for introductory courses on the subject, the textbook is also well-suited for self-study. It highlights important concepts and techniques in boxed summaries, with questions and exercises throughout the text, with full solutions provided. Online resources, hosted at www.cambridge.org/features/planets, include selected figures from the book, self-assessment questions and sample tutor assignments.Read more at http://www.cambridge.org/be/academic/subjects/physics/computational-science-and-modelling/introduction-astrobiology-3rd-edition#v6ts7IeXKeC6j5Xu.99
Exobiology. --- Life on other planets. --- Space biology. --- Exobiologie. --- Vie extraterrestre. --- Biologie spatiale. --- Astronomy --- Evolution. Phylogeny
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Exobiology. --- Evolution (Biology) --- Life --- Cosmogony. --- Exobiologie --- Evolution (Biologie) --- Vie --- Cosmogonie --- Origin. --- Origines
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