The Search for Life's Origins
The Search for Life's Origins

Author: National Research Council

Publisher: National Academies Press

Published: 1990-02-01

Total Pages: 161

ISBN-13: 0309042461

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The field of planetary biology and chemical evolution draws together experts in astronomy, paleobiology, biochemistry, and space science who work together to understand the evolution of living systems. This field has made exciting discoveries that shed light on how organic compounds came together to form self-replicating molecules-the origin of life. This volume updates that progress and offers recommendations on research programs-including an ambitious effort centered on Mars-to advance the field over the next 10 to 15 years. The book presents a wide range of data and research results on these and other issues: The biogenic elements and their interaction in the interstellar clouds and in solar nebulae. Early planetary environments and the conditions that lead to the origin of life. The evolution of cellular and multicellular life. The search for life outside the solar system. This volume will become required reading for anyone involved in the search for life's beginnings-including exobiologists, geoscientists, planetary scientists, and U.S. space and science policymakers.

Exoplanet Atmospheres
Exoplanet Atmospheres

Author: Sara Seager

Publisher: Princeton University Press

Published: 2010-08-02

Total Pages: 258

ISBN-13: 1400835305

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Over the past twenty years, astronomers have identified hundreds of extrasolar planets--planets orbiting stars other than the sun. Recent research in this burgeoning field has made it possible to observe and measure the atmospheres of these exoplanets. This is the first textbook to describe the basic physical processes--including radiative transfer, molecular absorption, and chemical processes--common to all planetary atmospheres, as well as the transit, eclipse, and thermal phase variation observations that are unique to exoplanets. In each chapter, Sara Seager offers a conceptual introduction, examples that combine the relevant physics equations with real data, and exercises. Topics range from foundational knowledge, such as the origin of atmospheric composition and planetary spectra, to more advanced concepts, such as solutions to the radiative transfer equation, polarization, and molecular and condensate opacities. Since planets vary widely in their atmospheric properties, Seager emphasizes the major physical processes that govern all planetary atmospheres. Moving from first principles to cutting-edge research, Exoplanet Atmospheres is an ideal resource for students and researchers in astronomy and earth sciences, one that will help prepare them for the next generation of planetary science. The first textbook to describe exoplanet atmospheres Illustrates concepts using examples grounded in real data Provides a step-by-step guide to understanding the structure and emergent spectrum of a planetary atmosphere Includes exercises for students

Why Is There Life on Earth?
Why Is There Life on Earth?

Author: Andrew Solway

Publisher: Capstone

Published: 2015-12-21

Total Pages: 102

ISBN-13: 1410985024

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This book explains the conditions that allow life to flourish on Earth, and the possibility of finding life on other planets.

What is Life? On Earth and Beyond
What is Life? On Earth and Beyond

Author: Andreas Losch

Publisher: Cambridge University Press

Published: 2017-07-13

Total Pages: 337

ISBN-13: 1107175895

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This volume explores the questions and answers surrounding the 'secret of life', combining approaches from the sciences, philosophy and theology, including the emerging discipline of astrobiology.

The Life and Death of Planet Earth
The Life and Death of Planet Earth

Author: Peter D. Ward

Publisher: Macmillan

Published: 2003

Total Pages: 260

ISBN-13: 9780805075120

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Planet Earth is middle-aged. Science has worked hard to piece together the story of the evolution of our world up to this point, but only recently have we developed the understanding and the tools to describe the entire life cycle of a planet. Ward and Brownlee, a geologist and an astronomer respectively, combine their knowledge of how the critical sustaining systems of our planet evolve through time with their understanding of the life cycles of stars and solar systems, to tell the story of the second half of Earth's life. The process of evolution will essentially reverse itself: life as we know it will subside until only the simplest forms remain. Eventually, they too will disappear. The oceans will evaporate, the atmosphere will degrade, and, as the sun slowly expands, Earth itself will eventually meet a fiery end. --From publisher description.

The Emergence of Life on Earth
The Emergence of Life on Earth

Author: Iris Fry

Publisher: Rutgers University Press

Published: 2000

Total Pages: 348

ISBN-13: 9780813527406

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How did life emerge on Earth? Is there life on other worlds? These questions, until recently confined to the pages of speculative essays and tabloid headlines, are now the subject of legitimate scientific research. This book presents a unique perspective--a combined historical, scientific, and philosophical analysis, which does justice to the complex nature of the subject. The book's first part offers an overview of the main ideas on the origin of life as they developed from antiquity until the twentieth century. The second, more detailed part of the book examines contemporary theories and major debates within the origin-of-life scientific community. Topics include: Aristotle and the Greek atomists' conceptions of the organism Alexander Oparin and J.B.S. Haldane's 1920s breakthrough papers Possible life on Mars?

Life of Earth
Life of Earth

Author: Stanley A. Rice, Ph.D

Publisher: Prometheus Books

Published: 2012-10-31

Total Pages: 255

ISBN-13: 1616142731

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In this portrait of Planet Earth-at just about the mid point of its probable lifespan-a biologist discusses the evolution of the network of life and the crucial role played by humans in determining the future of our world.Unlike most books on earth history, which present the story of life on our planet in terms of one chronological period after another, the author discusses Earth''s teeming diversity in terms of pivotal evolutionary developments. Among these he stresses the importance of symbiosis, sex, and altruism as key determinants of the Earth''s biodiversity. Symbiosis-when single cells began working together-sparked the sudden appearance of complex animals. Much later symbiotic relationships led to flowering plants that depended on animals for pollination and seed dispersal. With the advent of sexual selection, there developed an astonishing world of complex behavior and a dizzying array of life forms. In humans, sexual selection exerted a great influence on the development of our large brains. Altruism-when species learned to work together-resulted in even greater variety and complexity. In early humans, altruism gave rise to ever-widening social circles and the spread of culture. The author also discusses the role of photosynthesis in establishing and maintaining life on earth; the evidence for ancient natural catastrophes, which caused widespread extinctions; and the importance of religion and the recent use of scientific reasoning in the development and the future of the human species. This eloquent, panoramic perspective is well designed to foster an appreciation for the scope of life on Earth and to encourage wise stewardship of the natural world on which our survival depends.

Is There Life Out There?
Is There Life Out There?

Author: Carol Hand

Publisher: The Rosen Publishing Group, Inc

Published: 2015-12-15

Total Pages: 112

ISBN-13: 1508170533

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In the search for other habitable planets, perhaps the most fascinating question that has persistently captivated humans has been: is there life out there? Eschewing science fiction fantasies, this title looks at the hard research behind the possibility of extraterrestrial life. Theories, studies, and advances of exobiologists-scientists who study life in outer space-are presented, alongside more philosophical questions on the implications of life beyond Earth. Discussions of the definition of life, personhood, and the qualities of extremophiles (animals that survive under extreme conditions) bring this discussion to intriguing and unexpected places.

Is There Life in Outer Space?
Is There Life in Outer Space?

Author: Franklyn Mansfield Branley

Publisher:

Published: 2000

Total Pages: 36

ISBN-13: 9780439173261

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Discusses some of the ideas and misconceptions about life in outer space and speculates on the existence of such life in light of recent space explorations.