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If the Universe is Teeming with Aliens... Where Is Everybody?

fifty solutions to the Fermi paradox and the problem of extraterrestial life
Verfasser*in: Suche nach Verfasser*in Webb, Stephen
Verfasser*innenangabe: Stephen Webb
Jahr: 2002
Verlag: New York, Copernicus [u.a.]
Mediengruppe: Buch
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AktionZweigstelleStandorteStatusFristVorbestellungen
Vorbestellen Zweigstelle: 07., Urban-Loritz-Pl. 2a Standorte: NN.SM FS.E Webb / College 6a - Englisch Status: Verfügbar Frist: Vorbestellungen: 0

Inhalt

In a 1950 conversation at Los Alamos, four world-class scientists generally agreed, given the size of the Universe, that advanced extraterrestrial civilizations must be present. But one of the four, Enrico Fermi, asked, "If these civilizations do exist, where is everybody?" Given the fact that there are perhaps 400 million stars in our Galaxy alone, and perhaps 400 million 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. Webb discusses in detail the 50 most cogent and intriguing solutions to Fermi's famous paradox. (Quelle: amazon.de)Aus dem Inhalt:Preface ix / Figure Credits xi / Chapter 1 Where Is Everybody? l // Chapter 2 Of Fermi and Paradox 7 / Enrico Fermi 8 / Paradox 12 / The Fermi Paradox 17 // Chapter 3 They Are Here 27 / SOLUTION i They Are Here and They,Call Themselves Hungarians 28 / SOLUTION 2 They Are Here and Are Meddling in Human Affairs 29 / SOLUTION 3 They Were Here and Left Evidence of Their Presence 33 / SOLUTION 4 They Exist and They Are Us ¿ We Are All Aliens! 44 / SOLUTION 5 The Zoo Scenario 46 / SOLUTION 6 The Interdict Scenario 49 / SOLUTION 7 The Planetarium Hypothesis 51 / SOLUTION 8 God Exists 55 // Chapter 4 They Exist But Have Not Yet Communicated 61 / SOLUTION 9 The Stars Are Far Away 62 / SOLUTION 10 They Have Not Had Time to Reach Us 72 / SOLUTION n A Percolation Theory Approach 74 / SOLUTION 12 Bracewell-von Neumann Probes 79 / SOLUTION 13 We Are Solar Chauvinists 84 / SOLUTION 14 They Stay at Home 85 / SOLUTION is and Surf the Net 86 / SOLUTION 16 They Are Signaling But We Do Not Know How to Listen 88 / SOLUTION 17 They Are Signaling But We Do Not Know at Which Frequency to Listen 94 / SOLUTION is Our Search Strategy Is Wrong 102 / SOLUTION 19 The Signal Is Already There in the Data 105 / SOLUTION 20 We Have Not Listened Long Enough 106 / SOLUTION 21 Everyone Is Listening, No One Is Transmitting 108 / SOLUTION 22 Berserkers 111 / SOLUTION 23 They Have No Desire to Communicate 113 / SOLUTION 24 They Develop a Different Mathematics 116 / SOLUTION 25 They Are Calling But We Do Not Recognize the Signal 118 / SOLUTION 26 They Are Somewhere But the Universe Is Stranger Than We Imagine 121 / SOLUTION 27 A Choice of Catastrophes 122 / SOLUTION 28 They Hit the Singularity 134 / SOLUTION 29 Cloudy Skies Are Common 137 / SOLUTION 30 Infinitely Many ETCs Exist / But Only One Within Our Particle Horizon: Us 138 // Chapter 5 They Do Not Exist 141 / SOLUTION 31 The Universe Is Here for Us 143 / SOLUTION 32 Life Can Have Emerged Only Recently 147 / SOLUTION 33 Planetary Systems Are Rare 150 / SOLUTION 34 We Are the First 153 / SOLUTION 35 Rocky Planets Are Rare 156 / SOLUTION 36 Continuously Habitable Zones Are Narrow 158 / SOLUTION 37 Jupiters Are Rare 160 / SOLUTION 38 Earth Has an Optimal "Pump of Evolution" 164 / SOLUTION 39 The Galaxy Is a Dangerous Place 166 / SOLUTION 40 A Planetary System Is a Dangerous Place 172 / SOLUTION 41 Earth's System of Plate Tectonics Is Unique 180 / SOLUTION 42 The Moon Is Unique 184 / SOLUTION 43 Life's Genesis Is Rare 189 / SOLUTION 44 The Prokaryote-Eukaryote Transition Is Rare 206 / SOLUTION 45 Toolmaking Species Are Rare 211 / SOLUTION 46 Technological Progress Is Not Inevitable 215 / SOLUTION 47 Intelligence at the Human Level Is Rare 217 / SOLUTION 48 Language Is Unique to Humans 223 / SOLUTION 49 Science Is Not Inevitable 231 // Chapter 6 Conclusion 233 / SOLUTION so The Fermi Paradox Resolved 234 // Chapter 7 Notes and Further Reading 241 // Chapter 8 References 275 // Index 283

Details

Verfasser*in: Suche nach Verfasser*in Webb, Stephen
Verfasser*innenangabe: Stephen Webb
Jahr: 2002
Verlag: New York, Copernicus [u.a.]
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Systematik: Suche nach dieser Systematik NN.SM, FS.E
Suche nach diesem Interessenskreis
ISBN: 0-387-95501-1
Beschreibung: XI, 288 S. : Ill.
Schlagwörter: Außerirdisches Leben, Suche, Extraterrestrisches Leben, Sternenbewohner (LThK)
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Fußnote: Literaturverz. S. 275 - 282. -
Mediengruppe: Buch