Carl Sagan, writer and scientist, returns from the frontier to tell us about how the world works. In his delightfully down-to-earth style, he explores and explains a mind-boggling future of intelligent robots, extraterrestrial life and its consquences, and other provocative, fascinating quandries of the future that we want to see today

Ellie è il direttore del «Progetto Argus,» nel quale i segnali provenienti dallo spazio e captati da radiotelescopi nel Nuovo Messico sono analizzati intensivamente per cercare l’intelligenza extraterrestre (SETI). Dopo un po’, il progetto scopre, effettivamente, la prima comunicazione confermata da esseri extraterrestri, una serie ripetitiva dei numeri primi sino al 261 (una sequenza di numeri primi è un primo messaggio comunemente previsto da intelligenza aliena, poiché la matematica è considerata «un linguaggio universale», ed è congetturato che le procedure che producono i numeri primi successivi sono sufficientemente complicate da richiedere intelligenza per effettuarli). Un’ulteriore analisi del messaggio rivela che due messaggi supplementari sono codificati all’interno di esso in forme differenti di modulazione del segnale. Il secondo messaggio è un abecedario, una specie di manuale d’istruzioni che insegna come leggere ulteriori comunicazioni. Il terzo è il messaggio vero e proprio, i progetti per una macchina che sembra essere un genere di veicolo altamente avanzato, destinata ad ospitare un equipaggio umano. Una sottotrama vede Ellie interagire con una coppia di predicatori cristiani, che dibatte in maniera informale l’esistenza di Dio. Applicando il metodo scientifico, dichiara che «non esiste una prova schiacciante che Dio esista… e non esiste una prova schiacciante che Dio non esista.» Infine, una macchina è costruita con successo ed attivata, e trasporta cinque passeggeri — compresa Ellie — attraverso i buchi neri in un luogo vicino al centro della Via Lattea, dove vengono a contatto con i mittenti del messaggio. Molte delle domande dei viaggiatori trovano risposta. Al ritorno, i passeggeri scoprono che la loro esperienza che soggettivamente per loro era durata molte ore, sulla Terra era durata solo circa venti minuti, e che tutta la loro registrazione video è stata cancellata, presumibilmente da un certo fenomeno nel veicolo. Rimangono pertanto privi di prove del loro racconto

…Contato deve ser a obra de Carl Sagan mais conhecida. O cientista e divulgador de ciências experimentou pela primeira vez o gênero romance para apresentar suas idéias a respeito do universo, da humanidade e da própria ciência. O livro conta a história de uma pesquisadora que utiliza radiotelescópios à procura de vestígios de vida inteligente fora da Terra. A trama avança quando um sinal é detectado. Com certeza a parte do livro que mais me intrigou foi as especulações sobre as conseqüências de sabermos que não estamos sozinhos. As regras da economia, religião e política internacional seriam seriamente modificadas na análise de Carl. O livro nos faz pensar, e vale a pena a leitura

Carl Sagant nem kell bemutatni a hazai olvasóközönségnek. A nemzeközi hírű amerikai csillagász és kozmosztkutató azok közé a természettudósok közé tartozik, akik tudásukat élvezetes és érthető formában osztják meg a laikus érdeklődőkkel. Magyarországon Carl Sagan neve az ÉDEN SÁRKÁNYAI című könyvével és a KOZMOSZ televíziós sorozattal vált ismertté. A KAPCSOLAT (Contact) című regénye igazi bestsellerré, sőt, túlzás nélkül világszenzációvá vált, és a világ legtöbb nyelvére lefordították. A KAPCSOLAT minden idők legérdekesebb ismeretterjesztése a fizika, matematika és a csillagászat terén,s mindez regényes, olvasmányos formában. Sagan fantasztikus kalandra invitálja az olvasót - egy magasan fejlett civilizáció felfedezésére a határtalan világűrben. Egy nemzetközi kutatócsoprt végigéli a fénysebesség és a relativitás fogalmát eltörlő utazást, hogy tanúi és résztvevői lehessenek az emberi történelem leglélegzetelállítóbb találkozásának

To było wielkości planety. Nie mogło być tworem sztucznym według ludzkich miar, a przecież było czymś tak dziwnym i skomplikowanym, że ponad wszelką wątpliwość służyć musiało wyższym celom lub ucieleśniać jakąś ideę. Błyszcząc w orbicie polarnej obok wielkiej, białoniebieskiej gwiazdy, przypominało olbrzymi, nierównomierny mnogościan, obłożony milionami miseczkowato zagłębionych muszelek. Każda muszelka celowała w określony punkt nieba tak, że wszystkie konstelacje nieba były pod ich kontrolą. Ta wieloboczna planeta wykonywała swoje funkcje w wieczności. Nadzwyczaj cierpliwa. Mogła czekać wiecznie

Carl Sagan, a modern-day Renaissance man of science, was born in 1934 in New York. After graduating with both a B.A. and a B.S. degree from the University of Chicago, Sagan completed his M.S. in physics and earned a Ph.D. in astronomy and astrophysics in 1960. Sagan was nominated to join the Smithsonian Astrophysical Observatory in 1962. At the same time, he also worked with the Nobel-prize winner Joshna Lederberg, investigating the origins of life on Earth, and taught genetics at Stanford. Sagan then taught astronomy at Harvard until 1968, when he became professor of astronomy and space sciences at Cornell University. He was then appointed director of the laboratory for Planetary Studies. Sagan was awarded the NASA medal for exceptional scientific achievement in 1972, after his hypotheses about Mars were validated by data obtained from the 1971 Mars Mariner expedition. Beginning in 1968, Sagan was editor of Icarus, the international journal of astronomy, and wrote many distinguished books. His works include The Cosmic Connection (1973), which received the Campbell Award for best science book; the Pulitzer-prize winning Dragons of Eden (1977); Broca’s Brain (1979), on developments in neurophysiology; and Cosmos (1980), which accompanied his widely-acclaimed television series. In “The Nuclear Winter” (1983), Sagan explored the unforeseen and devastating physical and chemical effects of even a small-scale nuclear war on the earth’s biosphere and life on earth

From the #1 New York Times best-selling author of God Is Not Great, a provocative and entertaining guided tour of atheist and agnostic thought through the ages—with never-before-published pieces by Salman Rushdie, Ian McEwan, and Ayaan Hirsi Ali. Christopher Hitchens continues to make the case for a splendidly godless universe in this first-ever gathering of the influential voices—past and present—that have shaped his side of the current (and raging) God/no-god debate. With Hitchens as your erudite and witty guide, you'll be led through a wealth of philosophy, literature, and scientific inquiry, including generous portions of the words of Lucretius, Benedict de Spinoza, Charles Darwin, Karl Marx, Mark Twain, George Eliot, Bertrand Russell, Emma Goldman, H. L. Mencken, Albert Einstein, Daniel Dennett, Sam Harris, Richard Dawkins, and many others well-known and lesser known. And they’re all set in context and commented upon as only Christopher Hitchens—“political and literary journalist extraordinaire” (Los Angeles Times). Atheist? Believer? Uncertain? No matter: The Portable Atheist will speak to you and engage you every step of the way

Carl Sagan's prophetic vision of the tragic resurgence of fundamentalism and the hope-filled potential of the next great development in human spirituality The late great astronomer and astrophysicist describes his personal search to understand the nature of the sacred in the vastness of the cosmos. Exhibiting a breadth of intellect nothing short of astounding, Sagan presents his views on a wide range of topics, including the likelihood of intelligent life on other planets, creationism and so-called intelligent design, and a new concept of science as "informed worship." Originally presented at the centennial celebration of the famous Gifford Lectures in Scotland in 1985 but never published, this book offers a unique encounter with one of the most remarkable minds of the twentieth century