If The Universe Is Teeming With Aliens. Where Is Everybody Seventy-five Soluti - Stephen Webb
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If The Universe Is Teeming With Aliens. Where Is Everybody Seventy-five Soluti - Stephen Webb
Given The Fact That There Are Perhaps 400 Billion Stars In Our Galaxy Alone, And Perhaps 400 Billion Galaxies In The Universe, It Stands To Reason That Somewhere Out There, In The 14-billion-year-old Cosmos, There Is Or Once Was A Civilization At Least As Advanced As Our Own. The Sheer Enormity Of The Numbers Almost Demands That We Accept The Truth Of This Hypothesis. Why, Then, Have We Encountered No Evidence, No Messages, No Artifacts Of These Extraterrestrials?
- 品牌: Unbranded
- 类别: 科学、 医学与自然
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语言: English
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作者: Stephen Webb
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出版日期: 2015-05-29
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页数: 452
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出版社／标签: Springer Nature B.V
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格式: Paperback
- Fruugo ID: 26654027-57877053
- ISBN: 9783319132358
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