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This book describes a wide variety of speculations by many authors about the consequences for humanity of coming into contact with extraterrestrial intelligence

SETI has become a popular past time with the release of the SETI @ home screen saver, which analyzes data from the Arecibo radio telescope for signs of extrater

Astronomers around the world are pointing their telescopes toward the heavens, searching for signs of intelligent life. If they make contact with an advanced al

Are alien civilizations really possible? If extraterrestrials exist, where are they? How likely is it that somewhere in the universe an Earth-like planet suppor

Scientists have been searching for signals from extraterrestrial civilizations since Frank Drake’s first radio survey in 1960. But what would actually happen