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"It is statistically unlikely that humans are the only intelligent species in the universe. Nothing about the others will be known until contact is made beyond a radio signal from space that merely tells us they existed when it was sent. That contact may occur tomorrow, in a hundred years, or never. If it does it will be a high-risk scenario for humanity. It may be peaceful or hostile. Relying on alien altruism and benign intentions is wishful thinking. We need to begin identifying as a planetary species, and develop a global consensus on how to respond in either scenario"--

Space law. --- Life on other planets. --- Extraterrestrial beings. --- Human-alien encounters. --- Interstellar communication. --- Space warfare. --- War (International law) --- International law and human rights. --- Search for Extraterrestrial Intelligence (Study group : U.S.)

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Although we have done extensive studies of the Solar System and thus far found over 300 extrasolar planets – planets outside our Solar System – we have not yet found life, even primitive life, on any planet other than Earth. Might there be life on some of these newly discovered extrasolar planets? Not likely, as most are gas giants or are too close or too far from their sun. However, of late we are finding more and more Earthlike planets. It is now estimated that about 15 percent of the planets in the galaxy are Earthlike, and many of these will likely orbit their suns at the right distance to support life as we know it. No one knows yet if radio searches or other means of detection will reveal that we are not alone in the universe. But if we do discover intelligent life elsewhere, how will we communicate with it? Are there some “universal” methods of communication we can use? Is music or mathematics a universal language? Are there alien intelligences right here on Earth we can use to help us figure out ways of communicating? The answers may surprise you. All of these issues and more are covered in this exciting, readable, and authoritative book on a subject that is not mere idle speculation anymore. We are certainly getting closer to finding out who, if anybody, is out there. This book will not only inform you about the search and the likelihood of finding life, it will also actually teach you how to talk to aliens!

Extraterrestrial beings. --- Interstellar communication. --- Search for Extraterrestrial Intelligence (Study group : U.S.). --- Interstellar communication --- Extraterrestrial beings --- Astronomy & Astrophysics --- Astronomy - General --- Astronomical Observatories & Instruments --- Physical Sciences & Mathematics --- Life on other planets. --- Interplanetary communication --- Outer space communication --- Space communication --- Space telecommunication --- Extraterrestrial life --- Physics. --- Linguistics. --- Observations, Astronomical. --- Astronomy --- Popular works. --- Astronomy. --- Aerospace engineering. --- Astronautics. --- Astronomy, Observations and Techniques. --- Popular Science in Astronomy. --- Theoretical Linguistics. --- Popular Science, general. --- Aerospace Technology and Astronautics. --- Observations. --- Space sciences --- Aeronautics --- Astrodynamics --- Space flight --- Space vehicles --- Aeronautical engineering --- Astronautics --- Engineering --- Physical sciences --- Astronomical observations --- Observations, Astronomical --- Linguistic science --- Science of language --- Language and languages --- Natural philosophy --- Philosophy, Natural --- Dynamics --- Life on other planets --- Radio astronomy --- Telecommunication --- Planets --- Fermi's paradox --- Science (General). --- Astronomy—Observations. --- Search for Extraterrestrial Intelligence (Study group : U.S.) --- SETI --- S.E.T.I. --- Ames Research Center. --- Jet Propulsion Laboratory (U.S.).

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Au cours de son histoire, la science a livré de nombreux combats. À la Renaissance, Galilée a été condamné par le tribunal de l'Inquisition. Depuis lors, le Vatican a fait amende honorable, mais il est des idéologies plus profondément ancrées qui refusent de s'incliner devant les arguments scientifiques. Tel le racisme, qui a fait tant de mal au genre humain mais qui continue pourtant d'empoisonner nos sociétés. Quant au spécimen qui imprégnait le 19e siècle, il a subi un coup dur lorsque Darwin a publié L'Origine des espèces. Au grand dam des créationnistes, l'homme cessait alors de se considérer comme un être à part, directement issu de la volonté divine. Quant aux extraterrestres, suspectés un temps d'avoir capturé des terriens à bord de leurs ovnis ou participé à l'érection des pyramides, la science les a également remis à leur place.

Controverses scientifiques --- Science --- science --- extraterrestres --- géocentrisme --- héliocentrisme --- géoglyphes --- agroglyphes --- crop circles --- soucoupes volantes --- UFOs --- ovnis --- paradoxe de Fermi --- Search for Extraterrestrial Intelligence (SETI) --- racisme --- race humaine --- concept de race --- classification linnéenne --- Louis Agassiz (1807-1873) --- acide désoxyribonucléique (ADN) --- science et religion --- Galilée (1564-1642) --- Nicolas Copernic (1473-1543) --- Charles Darwin (1809 - 1882) --- dessein intelligent --- pseudoscience --- pseudo-science --- créationnisme --- intelligent design --- Trofim Lysenko (1898-1976) --- lyssenkisme --- vernalisation --- communisme --- nazisme --- juives --- antisémitisme --- Philipp Lenard (1862-1947) --- Johannes Stark (1874-1957) --- postmodernisme --- relativisme cognitif --- erreurs de la science --- fraudes scientifiques --- Trofim Lyssenko (1898-1976)

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This book is a collection of essays written by the very scientists and engineers who have led, and continue to lead, the scientific quest known as SETI, the search for extraterrestrial intelligence. Divided into three parts, the first section, ‘The Spirit of SETI Past’, written by the surviving pioneers of this then emerging discipline, reviews the major projects undertaken during the first 50 years of SETI science and the results of that research. In the second section, ‘The Spirit of SETI Present’, the present-day science and technology is discussed in detail, providing the technical background to contemporary SETI instruments, experiments, and analytical techniques, including the processing of the received signals to extract potential alien communications. In the third and final section, ‘The Spirit of SETI Future’, the book looks ahead to the possible directions that SETI will take in the next 50 years, addressing such important topics as interstellar message construction, the risks and assumptions of interstellar communications, when we might make contact, what aliens might look like and what is likely to happen in the aftermath of such a contact.

Electronic books. -- local. --- Extraterrestrial anthropology -- Research -- History. --- Life on other planets. --- Interstellar communication --- Extraterrestrial beings --- Exobiology --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Astronomy - General --- Astronomical Observatories & Instruments --- Extraterrestrial anthropology --- Research --- History. --- Extraterrestrial life --- Physics. --- Observations, Astronomical. --- Astronomy --- Astrobiology. --- Astronomy, Observations and Techniques. --- Signal, Image and Speech Processing. --- Observations. --- Planets --- Fermi's paradox --- Anthropology --- Interplanetary voyages --- Life on other planets --- Space sciences --- Astrobiology --- Biology --- Habitable planets --- Life --- Origin --- Astronomy—Observations. --- Signal processing. --- Image processing. --- Speech processing systems. --- Pictorial data processing --- Picture processing --- Processing, Image --- Imaging systems --- Optical data processing --- Astronomical observations --- Observations, Astronomical --- Processing, Signal --- Information measurement --- Signal theory (Telecommunication) --- Computational linguistics --- Electronic systems --- Information theory --- Modulation theory --- Oral communication --- Speech --- Telecommunication --- Singing voice synthesizers --- Search for Extraterrestrial Intelligence (Study group : U.S.) --- SETI --- S.E.T.I. --- Ames Research Center. --- Jet Propulsion Laboratory (U.S.).

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A provocative and inspiring look at the future of humanity and science from world-renowned scientist and bestselling author Martin ReesHumanity has reached a critical moment. Our world is unsettled and rapidly changing, and we face existential risks over the next century. Various outcomes-good and bad-are possible. Yet our approach to the future is characterized by short-term thinking, polarizing debates, alarmist rhetoric, and pessimism. In this short, exhilarating book, renowned scientist and bestselling author Martin Rees argues that humanity's prospects depend on our taking a very different approach to planning for tomorrow.The future of humanity is bound to the future of science and hinges on how successfully we harness technological advances to address our challenges. If we are to use science to solve our problems while avoiding its dystopian risks, we must think rationally, globally, collectively, and optimistically about the long term. Advances in biotechnology, cybertechnology, robotics, and artificial intelligence-if pursued and applied wisely-could empower us to boost the developing and developed world and overcome the threats humanity faces on Earth, from climate change to nuclear war. At the same time, further advances in space science will allow humans to explore the solar system and beyond with robots and AI. But there is no "Plan B" for Earth-no viable alternative within reach if we do not care for our home planet.Rich with fascinating insights into cutting-edge science and technology, this accessible book will captivate anyone who wants to understand the critical issues that will define the future of humanity on Earth and beyond.

Technology --- Science --- Social aspects. --- Social aspects. --- Adaptation to global warming. --- Andrei Linde. --- Anthropocene. --- Astronomer. --- Astronomy. --- Biotechnology. --- Blue Origin. --- Boston Dynamics. --- Breakthrough Listen. --- Breeder reactor. --- Calculation. --- Carbon. --- Carl Sagan. --- Climate change. --- Climate sensitivity. --- Credential. --- Cryonics. --- David Deutsch. --- Didier Queloz. --- Disaster. --- Dystopia. --- E. O. Wilson. --- Edward Teller. --- Electric charge. --- Elon Musk. --- Eugene Wigner. --- Eugenics. --- Exoplanet. --- Extended family. --- Externality. --- Extraterrestrial life. --- Fossil fuel. --- Frank Drake. --- Frank Wilczek. --- Frequency allocation. --- Fruition. --- Fuel. --- Fusion power. --- Future Evolution. --- Gene. --- Geologist. --- Golden rice. --- Great Leap Forward. --- Handbook. --- Hans Bethe. --- Human spaceflight. --- Hyperloop. --- Impact event. --- Instance (computer science). --- Intelligence explosion. --- Interstellar travel. --- John F. Kennedy. --- Joseph Rotblat. --- Life extension. --- Ludwig Wittgenstein. --- Lunar south pole. --- National Ignition Facility. --- Nobel Prize. --- Normal science. --- Nuclear power. --- Nuclear warfare. --- Nuclear weapon. --- Nuclear winter. --- One-child policy. --- Our Final Hour. --- Pale Blue Dot (book). --- Paul Dirac. --- Perplexity. --- Pfizer. --- Physicist. --- Pigment. --- Political agenda. --- Probability. --- Project Orion (nuclear propulsion). --- Radio telescope. --- Real Humans. --- Retirement age. --- Science. --- Scientist. --- Search for extraterrestrial intelligence. --- Second language. --- Self-interest. --- Solar cell. --- SpaceX. --- Spacecraft. --- Stuxnet. --- Technology. --- Test pilot. --- The Better Angels of Our Nature. --- The Philosopher. --- The Population Bomb. --- The Skeptical Environmentalist. --- Theoretical physics. --- Thought. --- Vasili Arkhipov. --- Vulnerability. --- Warfare. --- Waste heat. --- Year. --- Yuri Milner.