Ever since Carl Sagan first predicted that extraterrestrial civilizations must number in the millions, the search for life on other planets has gripped our imagination. Is Earth so rare that advanced life forms like us--or even the simplest biological organisms--are unique to the universe? How to Find a Habitable Planet describes how scientists are testing Sagan's prediction, and demonstrates why Earth may not be so rare after all.
James Kasting has worked closely with NASA in its mission to detect habitable worlds outside our solar system, and in this book he introduces readers to the advanced methodologies being used in this extraordinary quest. He addresses the compelling questions that planetary scientists grapple with today: What exactly makes a planet habitable? What are the signatures of life astronomers should look for when they scan the heavens for habitable worlds? In providing answers, Kasting explains why Earth has remained habitable despite a substantial rise in solar luminosity over time, and why our neighbors, Venus and Mars, haven't. If other Earth-sized planets endowed with enough water and carbon are out there, he argues, chances are good that some of those planets sustain life. Kasting describes the efforts under way to find them, and predicts that future discoveries will profoundly alter our view of the universe and our place in it.
This book is a must-read for anyone who has ever dreamed of finding other planets like ours--and perhaps even life like ours--in the cosmos.
"This is a very well-written book that serves perfectly as an introduction for the lay reader to astrobiology and the search for life beyond Earth, and it also presents some important and up-to-date material for the specialist researcher. Of particular note for me is Kasting's rebuttal of several aspects of the Rare Earth hypothesis and his discussion of the features that truly are crucial for planetary habitability."--Lewis Dartnell, Times Higher Education
"How to Find a Habitable Planet will fascinate those who care about the evolution of Earth's climate and wonder about how we will eventually detect life--even simple cellular life--elsewhere."--Nature
"He argues persuasively that Earth's large moon and strong magnetic field are red herrings; neither is a prerequisite for life. The second part of his book is a detailed account of the search for Earth-like exoplanets, and prospects for future success."--New Scientist
"Kasting, a key planner for future NASA missions seeking Earth-like exoplanets, possesses a deep understanding of all the multifarious complexities that feed into forming--and finding--living worlds. He writes about these topics, for all their profundity, with remarkable precision and clarity, drawing clear linkages between what we observe through telescopes with what we see right here, in the only biosphere we know. How to Find a Habitable Planet is a canonical guide to the probable future of humanity's search for life elsewhere in the Universe."--SEED Magazine
"A 'popular textbook', low on speculation but high on nuts-and-bolts science, it covers everything from the habitable zones around other stars to how to find other Earths. If I had to choose just one of these books, it would be Kasting's."--Marcus Chown, BBC Focus Magazine
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File created: 11/25/2013