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Book Did Extraterrestrials Bring Us to Intelligence on Our Planet  a Scientist Speculates on the Sparse Information Available from Prehistory

Download or read book Did Extraterrestrials Bring Us to Intelligence on Our Planet a Scientist Speculates on the Sparse Information Available from Prehistory written by John F. Caddy Ph.D. and published by Xlibris Corporation. This book was released on 2019-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book results from my literature search as an interested ecologist into the origin of intelligent life on our planet. I conclude that the evolution of life here was speeded up by extraterrestrial life forms of advanced intelligence who long preceded us. Through directed panspermia, they inoculated DNA or living cells onto our planet once its surface had cooled adequately—evolution then followed Darwinian processes. Panspermia reduced dramatically the time needed for evolution, given that the time required for unaided synthesis of the hypercomplex DNA molecule would be no less than this planet’s current age. It is supposed, however, that as intelligence evolved, galactic influences speeded up the convergence of intelligent terrestrial organisms with similar entities already existing off planet and human space flight and the recent technological revolution was aided by reverse engineering of crashed UFOs. It is concluded that the Earth has had a long history as an incubator for intelligent life, but these species, including us, are obliged to evolve rapidly to intellectual maturity and space-going capabilities to minimize the impacts of periodic catastrophes on their planetary populations. Successive past catastrophes such as periodic Ice Ages, planetary bombardments, and extreme atmospheric temperature fluctuations, all disrupt planetary civilizations. Inspired by reading Sitchin’s conclusions on the Anunnaki, it seemed very probable that other intelligent life forms capable of space exploration would become involved in our future. In the form of the Anunnaki, these were conventionally viewed by the first translators of cuneiform writing as the divinities of the ancient Sumerians. From a modern perspective, however, there seems adequate information accumulated by the twentieth century to support Sitchin’s idea that they were extraterrestrials from the planet Nibiru, which is possibly rotating around a dwarf star captured by the sun, whose orbit intersects the solar system at long intervals. Following the last Ice Age, an Anunnaki influence is postulated for the very rapid growth of urban civilizations. The sudden transition from hunter-gatherer cultures to large cities in Mesopotamia, India, Egypt, and elsewhere are associated with mathematics, writing, skills in construction, trade and irrigated agriculture—all without extended evolutionary stages. The subsequent growth of Megalithic civilizations worldwide originated by the Anunnaki saw the birth of common supporting technologies not yet understood by contemporary science. Amongst these was the construction of pyramids worldwide similar to those found on Mars. Evidence is accumulating that pyramids were not primarily tombs but, quite possibly, energy generators. A genetic intervention by the Anunnaki converting prehumans to effective workers is addressed in Sumerian accounts. Recent studies of human genotypes support the idea that the prehominids encountered by the Anunnaki were genetically modified to become useful workers and eventually gave rise to modern human beings. An extensive group of enclosures and associated terraces for food production discovered in southern Africa suggests these may have been constructed to accommodate and feed slave labor working the ancient gold mines in the vicinity. The product was shipped back to their home planet, Nibiru, to be used in monoatomic form to counter a climatic crisis. The subsequent northward African migration of modified humans and Anunnaki to Sumeria and ancient Egypt is mentioned. Early biblical texts from Genesis and the Book of Enoch parallel even earlier Sumerian accounts of actual events, such as those of the Garden of Eden and Noah’s Ark. The fable of the Tower of Babel may also stem from an account of Mesopotamian humans erecting a ziggurat as a signaling device for extraterrestrial vehicles, provoking the Anunnaki to prevent space technology falling into human hands. They dispersed the humans into different communities worldwide, where isolated groups of this relatively short-lived species soon diverged linguistically from a common tongue. This successful Tower of Babel principle is unfortunately at the basis of our mutual incomprehension between different linguistic groups and has fomented many armed conflicts and racial discrimination.

Book Did Extraterrestrials Bring Us to Intelligence on Our Planet  a Scientist Speculates on the Sparse Information Available from Prehistory

Download or read book Did Extraterrestrials Bring Us to Intelligence on Our Planet a Scientist Speculates on the Sparse Information Available from Prehistory written by John F. Caddy and published by . This book was released on 2019-05 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book results from my literature search as an interested ecologist into the origin of intelligent life on our planet. I conclude that the evolution of life here was speeded up by extraterrestrial life forms of advanced intelligence who long preceded us. Through directed panspermia, they inoculated DNA or living cells onto our planet once its surface had cooled adequately--evolution then followed Darwinian processes. Panspermia reduced dramatically the time needed for evolution, given that the time required for unaided synthesis of the hypercomplex DNA molecule would be no less than this planet''s current age.It is supposed, however, that as intelligence evolved, galactic influences speeded up the convergence of intelligent terrestrial organisms with similar entities already existing off planet and human space flight and the recent technological revolution was aided by reverse engineering of crashed UFOs. It is concluded that the Earth has had a long history as an incubator for intelligent life, but these species, including us, are obliged to evolve rapidly to intellectual maturity and space-going capabilities to minimize the impacts of periodic catastrophes on their planetary populations. Successive past catastrophes such as periodic Ice Ages, planetary bombardments, and extreme atmospheric temperature fluctuations, all disrupt planetary civilizations.Inspired by reading Sitchin''s conclusions on the Anunnaki, it seemed very probable that other intelligent life forms capable of space exploration would become involved in our future. In the form of the Anunnaki, these were conventionally viewed by the first translators of cuneiform writing as the divinities of the ancient Sumerians. From a modern perspective, however, there seems adequate information accumulated by the twentieth century to support Sitchin''s idea that they were extraterrestrials from the planet Nibiru, which is possibly rotating around a dwarf star captured by the sun, whose orbit intersects the solar system at long intervals.Following the last Ice Age, an Anunnaki influence is postulated for the very rapid growth of urban civilizations. The sudden transition from hunter-gatherer cultures to large cities in Mesopotamia, India, Egypt, and elsewhere are associated with mathematics, writing, skills in construction, trade and irrigated agriculture--all without extended evolutionary stages. The subsequent growth of Megalithic civilizations worldwide originated by the Anunnaki saw the birth of common supporting technologies not yet understood by contemporary science. Amongst these was the construction of pyramids worldwide similar to those found on Mars. Evidence is accumulating that pyramids were not primarily tombs but, quite possibly, energy generators.A genetic intervention by the Anunnaki converting prehumans to effective workers is addressed in Sumerian accounts. Recent studies of human genotypes support the idea that the prehominids encountered by the Anunnaki were genetically modified to become useful workers and eventually gave rise to modern human beings. An extensive group of enclosures and associated terraces for food production discovered in southern Africa suggests these may have been constructed to accommodate and feed slave labor working the ancient gold mines in the vicinity. The product was shipped back to their home planet, Nibiru, to be used in monoatomic form to counter a climatic crisis. The subsequent northward African migration of modified humans and Anunnaki to Sumeria and ancient Egypt is mentioned.Early biblical texts from Genesis and the Book of Enoch parallel even earlier Sumerian accounts of actual events, such as those of the Garden of Eden and Noah''s Ark. The fable of the Tower of Babel may also stem from an account of Mesopotamian humans erecting a ziggurat as a signaling device for extraterrestrial vehicles, provoking the Anunnaki to prevent space technology falling into human hands. They dispersed the humans into different communities worldwide, where isolated groups of this relatively short-lived species soon diverged linguistically from a common tongue. This successful Tower of Babel principle is unfortunately at the basis of our mutual incomprehension between different linguistic groups and has fomented many armed conflicts and racial discrimination.

Book The Contact Paradox

    Book Details:
  • Author : Keith Cooper
  • Publisher : Bloomsbury Publishing
  • Release : 2019-10-31
  • ISBN : 1472960440
  • Pages : 337 pages

Download or read book The Contact Paradox written by Keith Cooper and published by Bloomsbury Publishing. This book was released on 2019-10-31 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: What will happen if (perhaps when) humanity makes contact with another civilisation on a different planet? In 1974 a message was beamed towards the stars by the giant Arecibo telescope in Puerto Rico, a brief blast of radio waves designed to alert extraterrestrial civilisations to our existence. Of course, we don't know if such civilisations really exist. For the past six decades a small cadre of researchers have been on a quest to find out, as part of SETI, the search for extraterrestrial intelligence. So far, SETI has found no evidence of extraterrestrial life, but with more than a hundred billion stars in our Galaxy alone to search, the odds of quick success are stacked against us. The silence from the stars is prompting some researchers to transmit more messages into space, in an effort to provoke a response from any civilisations out there that might otherwise be staying quiet. However, the act of transmitting raises troubling questions about the process of contact. In The Contact Paradox, author Keith Cooper looks at how far SETI has come since its modest beginnings, and where it is going, by speaking to the leading names in the field and beyond. SETI forces us to confront our nature in a way that we seldom have before – where did we come from, where are we going, and who are we in the cosmic context of things? This book considers the assumptions that we make in our search for extraterrestrial life, and explores how those assumptions can teach us about ourselves.

Book Exogenesis  Hybrid Humans

Download or read book Exogenesis Hybrid Humans written by Bruce R. Fenton and published by Red Wheel/Weiser. This book was released on 2020-06-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Exogenesis is a milestone in understanding our past." —Erich von Däniken, author of Chariots of the Gods Exogenesis: the hypothesis that life originated elsewhere in the universe and was spread to Earth. Exogenesis: Hybrid Humans offers a deep dive into the strongest ever scientific evidence that supports the popular belief that Earth has been visited in prehistory, but goes even further, concluding that there is also compelling evidence of alien involvement with the human genome. The broader history of possible extraterrestrial contact is explored alongside a look at current events in the subject of alien disclosure with the result of highlighting evidence of a contact continuum that has continued since the dawn of humanity. The data brought together suggests that the next stage in human evolution may involve the manifestation of full open contact with the visitors in our lifetimes. Exogenesis: Hybrid Humans explores: An ancient sacred Aboriginal artifact Wreckage from a huge colony ship gets identified along with associated NASA studies concluding it is a material found in only one place on Earth Genetic engineering of Homo sapiens from an early hominin species is confirmed with a lengthy list of DNA anomalies only explainable by humans being an alien ‘hybrid’ creation The recent NASA sea change with certain academics calling for serious study of UFOs and other anomalous phenomena The theory that an extraterrestrial modified retrovirus was used to deliver some of the genetic information into the upgraded humans

Book Summary   Analysis of Extraterrestrial

Download or read book Summary Analysis of Extraterrestrial written by SNAP Summaries and published by SNAP Summaries. This book was released on with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: PLEASE NOTE: This is a summary and analysis of the book and not the original book. SNAP Summaries is wholly responsible for this content and is not associated with the original author in any way. If you are the author, publisher, or representative of the original work, please contact info[at]snapsummaries[dot]com with any questions or concerns. If you'd like to purchase the original book, please paste this link in your browser: https://amzn.to/2N2dUV2 In 2017, an object raced through our solar system that confounded astrophysicists. Was it just a comet or meteor? Or was it finally proof of alien life forms—an intelligent object that behaved nothing like anything scientists have seen before. Join Avi Loeb on his quest for the truth of the origin of the UFO and humanity's future in space exploration. What does this SNAP Summary Include? - Synopsis of the original book - Key takeaways from each chapter - What ‘Oumuamua could be and why its appearance is one of the most important astrophysical events ever - Why we might have to leave Earth, and how astro-archaeology could give us the answers we need - Editorial Review - Background on Avi Loeb About the Original Book: In his book, Extraterrestrial, Harvard astrophysicist Avi Loeb explores the origins of the mysterious ‘Oumuamua event that caused explosive debate in the scientific community. In addition to investigating the event itself, Loeb opines on the state of astrophysics, the future of humanity, and our chances of finding life on other planets. The last few years have brought unprecedented ideas to the fore as our galaxy becomes clearer. We’ve seen an extraterrestrial visitor speeding away on sunbeams and felt the thrill of our new telescopic capabilities revealing habitable planets, as if by magic. We’re closer than ever to discovering lightspeed travel, and Avi Loeb is at the forefront of it all. DISCLAIMER: This book is intended as a companion to, not a replacement for, Extraterrestrial. SNAP Summaries is wholly responsible for this content and is not associated with the original author in any way. If you are the author, publisher, or representative of the original work, please contact info[at]snapsummaries.com with any questions or concerns. Please follow this link: https://amzn.to/2N2dUV2 to purchase a copy of the original book.

Book Extra terrestrial Intelligence

Download or read book Extra terrestrial Intelligence written by James Lee Christian and published by . This book was released on 1976 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: For centuries, from the earliest legends of the man on the moon, mankind has fantasized and speculated about other life in the universe. With the discovery of biochemical evolution - which showed how life could evolve out of simple compounds - those speculations took on a new dimension. Most scientists now believe that it is possible that there is other intelligent life in the universe. What are the possibilities of our making contact with ETIs in the profound vastness of space (a problem, as Isaac Asimov notes, too easily dismissed by cultists)? What will be the consequences to our images of ourselves and our world of the first proven contact with beings from another planet, since they are likely to be of superior intelligence? Could we still believe in the value of life as we live it? How would it affect mankind's religions, both Western and Eastern? Would it in fact mean, as Arthur C. Clarke has said, an end to mankind's childhood? These and other questions are explored in Extraterrestrial Intelligence - from the most practical issues, such as how the news of contact should be handled, to the most exciting and troubling questions of philosophy, religion, and science. Extraterrestrial Intelligence begins the search for a cosmic context for mankind. It leads the way in reflecting on the next stage in our gradual self-discovery.

Book Extraterrestrial

    Book Details:
  • Author : Avi Loeb
  • Publisher : Houghton Mifflin
  • Release : 2021
  • ISBN : 0358278147
  • Pages : 245 pages

Download or read book Extraterrestrial written by Avi Loeb and published by Houghton Mifflin. This book was released on 2021 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harvard's top astronomer lays out his controversial theory that our solar system was recently visited by advanced alien technology from a distant star

Book Extraterrestrials

    Book Details:
  • Author : E. Regis
  • Publisher : CUP Archive
  • Release : 1987-04-24
  • ISBN : 9780521348522
  • Pages : 292 pages

Download or read book Extraterrestrials written by E. Regis and published by CUP Archive. This book was released on 1987-04-24 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: With current interest in extraterrestrials at a peak, this book is a collection of original and reprinted articles advancing the latest scientific ideas as to the possible existence and nature of extraterrestrial intelligent life. Usually this subject is treated only in popular media, such as science fiction novels, movies, and television. Recently, however, scientists and researchers have begun to consider in earnest whether extraterrestrials really exist, whether they have evolved from simpler forms of life, whether they have evolved intelligence, and if so whether their modes of understanding the world are comparable to and congruent with our own. The contributors to this volume cover these topics, and also consider how we might communicate with aliens, and whether we would be able to understand the alien messages we might receive. Finally the authors, who include distinguished scientists, speculate whether the aliens might have a moral code, and what might be our moral obligations in the event any extraterrestrials were ever discovered.

Book Intelligent Life in the Universe

Download or read book Intelligent Life in the Universe written by Peter Ulmschneider and published by Springer Science & Business Media. This book was released on 2005-02-23 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the origins, development and fate of intelligent species in the observable part of our universe. It scrutinizes what kind of information about extraterrestrial intelligent life can be inferred from our own biological, cultural and scientific evolution and the likely future of mankind. There is emphasis on the geological conditions and consequences of life's conquest of land as the pre-condition for the emergence of life with our type of technical intelligence.

Book Seti Pioneers

    Book Details:
  • Author : David W. Swift
  • Publisher :
  • Release : 1993-09
  • ISBN : 9780816514083
  • Pages : 464 pages

Download or read book Seti Pioneers written by David W. Swift and published by . This book was released on 1993-09 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Are there beings in some sense like you, elsewhere in the universe, or are we the only ones around? It's one of the most basic questions there is." --Carl SaganCarl Sagan, when asked his assessment of the importance of the search for extraterrestrial intelligence (SETI), replied, "You find out who you are. It's a basic question. Are there beings in some sense like you, elsewhere in the universe, or are we the only ones around? It touches deeply into myth, folklore, religion, mythology; and every human culture in some way or another has wondered about that kind of question. It's one of the most basic questions there is." Why did some scientists decide to conduct a search for extraterrestrial intelligence? What factors in their personal development predisposed them to such a quest? What obstacles did they encounter along the way? To learn about their search, to preserve historical information not otherwise available, and to discover more about how scientific fields originate and develop, sociologist David Swift interviewed the first scientists to be involved in this fascinating quest. These SETI Pioneers reveal not only their involvement in the search, but also the facets of their personal backgrounds that led them to participate--family, education, intellectual growth--and their speculations about the nature of extraterrestrial life. Each interviewee is asked the same set of questions to facilitate comparison of how their careers developed. Introductory text by Swift reviews the emergence of SETI and early attempts to detect extraterrestrial life; a concluding interview with Paul Horowitz, a leader in the new generation of SETI scientists, reflects on the contributions of the pioneers. While a host of books have considered the search for extraterrestrial intelligence, none has considered the motivations of the individuals who initiated it; nor have any books documented from the participant's perspective the emergence of a new field of science while it was actually evolving. This collection of interviews thus sheds important light not only on the search for other life forms in our universe, but also on the nature of scientific discovery.

Book The Search for Extraterrestrial Intelligence

Download or read book The Search for Extraterrestrial Intelligence written by Thomas R. McDonough and published by Wiley. This book was released on 1988-04-29 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the infinite universe there exists the infinite possibility that we are not alone. Since 1959, scientists engaged in the SETI effort (Search for Extraterrestrial Intelligence) have been quietly searching the cosmos for evidence of intelligent life--a discovery, that, if made, will be the most dramatic event in human history. And it's getting harder to detect signals from space--the very technology that makes it possible to detect other civilizations is now clogging the skies with radio pollution from ground-based radio transmitters, spy satellites, and communications satellites. In this intriguing behind-the-scenes view of the search for ET, McDonough reveals recent scientific advances and controversies, battles with the government to get various projects funded, and international projects--particularly those of the Soviets. He also provides an entertaining look at Alien in literature and popular culture, as well some exciting speculation for the future.

Book Extraterrestrial Intelligence

Download or read book Extraterrestrial Intelligence written by Jean Heidmann and published by Cambridge University Press. This book was released on 1995-08-25 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of whether or not we are alone in the universe has piqued the curiosity of humankind from ancient to modern times. If extraterrestrial intelligence exists, then positive detection of it would be the greatest scientific discovery of all time. By what criteria should we judge if we are alone in the cosmos, and how should we set about detecting extraterrestrials? Jean Heidmann answers these questions in his engaging discussion of extraterrestrial intelligence. The author shows how planets fit into the hierarchy of the universe, and discusses prebiotic stages of life, and the emergence of primitive biological life in the solar system. From this base the entire subject of extraterrestrials is explained: techniques for searching and the results of current projects (including the Search for Extra Terrestrial Intelligence (SETI) project); the expansion of searches for extraterrestrials; the habitable zones in our universe; and what might happen if actual contact takes place. This lively account is written for a general readership with interest in this topic. Jean Heidmann is the author of Cosmic Odessey (CUP, 1989).

Book The Science of Aliens

    Book Details:
  • Author : Jack Challoner
  • Publisher : Prestel Publishing
  • Release : 2005
  • ISBN : 9783791334851
  • Pages : 60 pages

Download or read book The Science of Aliens written by Jack Challoner and published by Prestel Publishing. This book was released on 2005 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Are we alone? The idea of life existing elsewhere in the Universe has been put forward by philosophers since the time of Ancient Egypt. Today, through science fiction literature, films and television we have all had close encounters with aliens. Now The Science of Aliens examines the possibilities of alien life in outer space as well as presenting a close-up look at 'aliens' on earth. Based on an international interactive exhibition. The Science of Aliens is a combination of imagination and ground-breaking science in the quest for extraterrestrial life."--BOOK JACKET.

Book Civilized Life in the Universe

Download or read book Civilized Life in the Universe written by George Basalla and published by . This book was released on 2006 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this fascinating history of scientific speculation about intelligent extraterrestrial life from Plutarch to Hawking, Basalla traces the influence of one speculation on the next, showing an unbroken but twisting chain of ideas passed from one scientist to another, and from science to popular culture.

Book The Eerie Silence

    Book Details:
  • Author : P. C. W. Davies
  • Publisher : Houghton Mifflin
  • Release : 2010
  • ISBN : 9780547133249
  • Pages : 241 pages

Download or read book The Eerie Silence written by P. C. W. Davies and published by Houghton Mifflin. This book was released on 2010 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this mind-expanding book, Paul Davies, astrobiologist and chairman of the SETI Post-Detection Taskgroup and, refocuses the search, challenging existing ideas of what form an alien intelligence might take, how it might try to communicate with us, and how we should respond if it does.

Book Contact Paradox

Download or read book Contact Paradox written by Keith Cooper and published by . This book was released on 2021 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In 1974 a message was beamed towards the stars by the giant Arecibo telescope in Puerto Rico, a brief blast of radio waves designed to alert extraterrestrial civilisations to our existence. Of course, we don't know if such civilisations really exist. For the past six decades a small cadre of researchers have been on a quest to find out, as part of SETI, the search for extraterrestrial intelligence. So far, SETI has found no evidence of extraterrestrial life, but with more than a hundred billion stars in our Galaxy alone to search, the odds of quick success are stacked against us. The silence from the stars is prompting some researchers, inspired by the Arecibo transmission, to transmit more messages into space, in an effort to provoke a response from any civilisations out there that might otherwise be staying quiet. However, the act of transmitting raises troubling questions about the process of contact. We look for qualities such as altruism and intelligence in extraterrestrial life, but what do these mean to humankind? Can civilisations survive in the Universe long enough for us to detect them, and what can their existence, or lack thereof, reveal to us about our future prospects? Can we learn something about our own history when we explore what happens when two civilisations come into contact? Finally, do the answers tell us that it is safe to transmit, even though we know nothing about extraterrestrial life, or as Stephen Hawking argued, are we placing humanity in jeopardy by doing so? In The Contact Paradox , author Keith Cooper looks at how far SETI has come since its modest beginnings, and where it is going, by speaking to the leading names in the field and beyond. SETI forces us to confront our nature in a way that we seldom have before - where did we come from, where are we going, and who are we in the cosmic context of things? This book considers the assumptions that we make in our search for extraterrestrial life, and explores how those assumptions can teach us about ourselves."--

Book Life on Other Worlds

    Book Details:
  • Author : Steven J. Dick
  • Publisher : Cambridge University Press
  • Release : 1998-09-28
  • ISBN : 9780521620123
  • Pages : 304 pages

Download or read book Life on Other Worlds written by Steven J. Dick and published by Cambridge University Press. This book was released on 1998-09-28 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are we alone in the Universe? From the furor over Percival Lowell's claim of canals on Mars at the beginning of the century to the more recent controversial rock from Mars and the sophisticated Search for Extraterrestrial Intelligence (SETI), the prospect of otherworldly life has often titillated and occasionally consumed science and the public. The search for planetary systems, the quest to explain UFOs, and inquiries into the origin of life have fueled an abundance of popular and scientific literature. They have also provided Hollywood with fodder for some of the most popular films of our time, including ET, Aliens, Independence Day, and Contact. Lucid and accessible, Life on Other Worlds chronicles the history of the twentieth-century extraterrestrial debate. Putting the latest findings and heated controversies into a broader historical context, Steven Dick documents how the concept of extraterrestrial intelligence is a world view of its own--a "biophysical cosmology" that seeks confirmation no less than physical views of the Universe. The debate rests at the very limits of science, and attempts at confirmation only illuminate the nature of science itself. Dick shows that appreciating the history of the debate enables a better understanding of the nature of science, and is central to any forward-looking view of religion and philosophy. For anyone interested in a look over the edge of scientific discovery, Life on Other Worlds provides the exciting tale behind the greatest debate in the twentieth century. Dr. Steven J. Dick is an astronomer and historian of science at the U.S. Naval Observatory. He is the author of Plurality of Worlds: The Origins of the Extraterrestrial Life Debate from Democritus to Kant (Cambridge, 1982) and Biological Universe (Cambridge, 1996).