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If the universe is teeming with aliens where is everybody?: fifty solutions to the Fermi paradox and the problem of extraterrestrial life
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. The sheer enormities of...
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Lenguaje: | eng |
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Springer
2002
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Acceso en línea: | https://dx.doi.org/10.1007/b97464 http://cds.cern.ch/record/2023268 |