The Eerie Silence 2025 pdf epub mobi 電子書下載

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Fifty years ago, a young astronomer named Frank Drake pointed a radio telescope at nearby stars in the hope of picking up a signal from an alien civilization. Thus began one of the boldest scientific projects in history, the Search for Extraterrestrial Intelligence (SETI). But after a half century of scanning the skies, astronomers have little to report but an eerie silence-eerie because many scientists are convinced that the universe is teeming with life. The problem, argues leading physicist and astrobiologist Paul Davies, is that we've been looking in the wrong place, at the wrong time, and in the wrong way. Davies should know. For more than three decades, he has been closely involved with SETI and now chairs the SETI Post-Detection Taskgroup, charged with deciding what to do if we're confronted with evidence of alien intelligence. In this extraordinary book, he shows how SETI has lost its edge, then offers a new and exciting road map for the future.Davies believes that our

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發表於2025-01-10

The Eerie Silence 2025 pdf epub mobi 電子書下載

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1960年4月的一個早上，年輕的天文學傢法蘭剋·德雷剋(Frank Drake)將位於西弗吉尼亞州綠岸的美國國傢射電天文颱26米射電望遠鏡對準瞭鯨魚座t星(Tau Ceti)，在1420兆赫波段進行瞭半個小時的觀測，由此開始瞭人類曆史上最雄心勃勃也可能是最重要的研究計劃：搜索地外文明計劃(SET...

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