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Ben Bova‏ · John Betancourt‏

دی ۲۰۲۳ · Wildside Press LLC · با روایت هوش مصنوعی توسط Mason (از Google)

درباره این کتاب صوتی

Two drafted soldiers, an optical astronomer and a radio astronomer, are stationed in an isolated weather dome at the South Pole for the winter. While observing a distant star, they inexplicably detect a complex signal being transmitted through space. Through painstaking analysis, they determine the signal carries a message conveying the technological history of an advanced alien civilization.