If we send a message into space, will extraterrestrial beings receive it? Will they understand? The endlessly fascinating question of whether we are alone in the universe has always been accompanied by another, more complicated one: if there is extraterrestrial life, how would we communicate with it? In this book, Daniel Oberhaus leads readers on a quest for extraterrestrial communication. Exploring Earthlings' various attempts to reach out to non-Earthlings over the centuries, he poses some not entirely answerable questions: If we send a message into space, will extraterrestrial beings receive it? Will they understand? What languages will they (and we) speak? Is there not only a universal grammar (as Noam Chomsky has posited), but also a grammar of the universe? Oberhaus describes, among other things, a late-nineteenth-century idea to communicate with Martians via Morse code and mirrors; the emergence in the twentieth century of SETI (the search for extraterrestrial intelligence), CETI (communication with extraterrestrial intelligence), and finally METI (messaging extraterrestrial intelligence); the one-way space voyage of Ella, an artificial intelligence agent that can play cards, tell fortunes, and recite poetry; and the launching of a theremin concert for aliens. He considers media used in attempts at extraterrestrial communication, from microwave systems to plaques on spacecrafts to formal logic, and discusses attempts to formulate a language for our message, including the Astraglossa and two generations of Lincos (lingua cosmica). The chosen medium for interstellar communication reveals much about the technological sophistication of the civilization that sends it, Oberhaus observes, but even more interesting is the information embedded in the message itself. In Extraterrestrial Languages, he considers how philosophy, linguistics, mathematics, science, and art have informed the design or limited the effectiveness of our interstellar messaging.

In April 2010, fifty years to the month after the first experiment in the Search for Extraterrestrial Intelligence (SETI), scholars from a range of disciplines—including astronomy, mathematics, anthropology, history, and cognitive science—gathered at NASA's biennial Astrobiology Science Conference (AbSciCon) for a series of sessions on the search for intelligent life. This book highlights the most recent developments in SETI discussed at that conference, emphasizing the ways that SETI has grown since its inception. The volume covers three broad themes: First, leading researchers examine the latest developments in observational SETI programs, as well as innovative proposals for new search strategies and novel approaches to signal processing. Second, both proponents and opponents of "Active SETI" debate whether humankind should be transmitting intentional signals to other possible civilizations, rather than only listening. Third, constructive proposals for interstellar messages are juxtaposed with critiques that ask whether any meaningful exchange is possible with an independently evolved civilization, given the constraints of contact at interstellar distances, where a round-trip exchange could take centuries or millennia. As we reflect on a half-century of SETI research, we are reminded of the expansion of search programs made possible by technological and conceptual advances. In this spirit of ongoing exploration, the contributors to this book advocate a diverse range of approaches to make SETI increasingly more powerful and effective, as we embark on the next half-century of searching for intelligence beyond Earth.

New York Times Bestseller | Wall Street Journal Bestseller | Publishers Weekly Bestseller | Publishers Marketplace 2020 Buzz Book | Amazon Best Book of the Year | Longlisted for the 2022 PEN/E.O. Wilson Literary Science Writing Award “Provocative and thrilling ... Loeb asks us to think big and to expect the unexpected.” —Alan Lightman, New York Times bestselling author of Einstein’s Dreams and Searching for Stars on an Island in Maine Harvard’s top astronomer lays out his controversial theory that our solar system was recently visited by advanced alien technology from a distant star. In late 2017, scientists at a Hawaiian observatory glimpsed an object soaring through our inner solar system, moving so quickly that it could only have come from another star. Avi Loeb, Harvard’s top astronomer, showed it was not an asteroid; it was moving too fast along a strange orbit, and left no trail of gas or debris in its wake. There was only one conceivable explanation: the object was a piece of advanced technology created by a distant alien civilization. In Extraterrestrial, Loeb takes readers inside the thrilling story of the first interstellar visitor to be spotted in our solar system. He outlines his controversial theory and its profound implications: for science, for religion, and for the future of our species and our planet. A mind-bending journey through the furthest reaches of science, space-time, and the human imagination, Extraterrestrial challenges readers to aim for the stars—and to think critically about what’s out there, no matter how strange it seems.

An exploration of the practice of inventing languages, from speaking in tongues to utopian schemes of universality to the discoveries of modern linguistics. In Imaginary Languages, Marina Yaguello explores the history and practice of inventing languages, from religious speaking in tongues to politically utopian schemes of universality to the discoveries of modern linguistics. She looks for imagined languages that are autonomous systems, complete unto themselves and meant for communal use; imaginary, and therefore unlike both natural languages and historically attested languages; and products of an individual effort to lay hold of language. Inventors of languages, Yaguello writes, are madly in love: they love an object that belongs to them only to the extent that they also share it with a community. Yaguello investigates the sources of imaginary languages, in myths, dreams, and utopias. She takes readers on a tour of languages invented in literature from the sixteenth to the twentieth century, including that in More’s Utopia, Leibniz’s “algebra of thought,” and Bulwer-Lytton’s linguistic fiction. She examines the linguistic fantasies (or madness) of Georgian linguist Nikolai Marr and Swiss medium Hélène Smith; and considers the quest for the true philosophical language. Yaguello finds two abiding (and somewhat contradictory) forces: the diversity of linguistic experience, which stands opposed to unifying endeavors, and, on the other hand, features shared by all languages (natural or not) and their users, which justifies the universalist hypothesis. Recent years have seen something of a boom in invented languages, whether artificial languages meant to facilitate international communication or imagined languages constructed as part of science fiction worlds. In Imaginary Languages (an updated and expanded version of the earlier Les Fous du langage, published in English as Lunatic Lovers of Language), Yaguello shows that the invention of language is above all a passionate, dizzying labor of love.

Here is the captivating story of humankind’s enduring quest to build a better language—and overcome the curse of Babel. Just about everyone has heard of Esperanto, which was nothing less than one man’s attempt to bring about world peace by means of linguistic solidarity. And every Star Trek fan knows about Klingon. But few people have heard of Babm, Blissymbolics, Loglan (not to be confused with Lojban), and the nearly nine hundred other invented languages that represent the hard work, high hopes, and full-blown delusions of so many misguided souls over the centuries. With intelligence and humor, Arika Okrent has written a truly original and enlightening book for all word freaks, grammar geeks, and plain old language lovers.

Human language allows us to plan, communicate, and create new ideas, without limit. Yet we have only finite experiences, and our languages have finite stores of words. Drawing on research from neuroscience, psychology, and linguistics, David Adger takes us on a journey to the hidden structure behind all we say (or sign) and understand.

This book provides a snapshot of the field of language acquisition at the beginning of the 21st Century. It represents the multiplicity of approaches that characterize the field and provides a review of current topics and debates, as well as addressing some of the connections between sub-fields and possible future directions for research.

Addressing a field that has been dominated by astronomers, physicists, engineers, and computer scientists, the contributors to this collection raise questions that may have been overlooked by physical scientists about the ease of establishing meaningful communication with an extraterrestrial intelligence. These scholars are grappling with some of the enormous challenges that will face humanity if an information-rich signal emanating from another world is detected. By drawing on issues at the core of contemporary archaeology and anthropology, we can be much better prepared for contact with an extraterrestrial civilization, should that day ever come.

Are we alone in the universe? If other lifeforms exist, how might their languages have evolved? Could we ever understand them, even learn their languages? This highly original, thought-provoking book explores how human life evolved on our own planet in order to analyse the likelihood of life and language beyond Earth.