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Extraterrestrial : the first sign of intelligent life beyond Earth

Avi Loeb, Author | [S.l.] : Houghton Mifflin Company | 2021

"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 i[...]

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Life in the Cosmos : from biosignatures to technosignatures

Avi Loeb, Author ; Manasvi Lingam, Author | Cambridge, Massachusetts : Harvard University Press | 2021

"Are we alone in the universe?" This tantalizing question has captivated humanity over millennia, but seldom has it been approached rigorously. Today the search for signatures of extraterrestrial life and intelligence has become a rapidly advanc[...]

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