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Date: 2008-05-29 11:30:19 SETI Fermi paradox Open problems Risks to civilization humans and planet Earth Great Filter Self-replicating spacecraft Search for extraterrestrial intelligence Extrasolar planet Space colonization Astrobiology Extraterrestrial life Space		Add to Reading List Source URL: www.nickbostrom.com Download Document from Source Website File Size: 200,11 KB Share Document on Facebook

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