A probabilistic analysis of the Fermi paradox in terms of the Drake formula: the role of the L factor

22 Sep 2020 Prantzos Nikos

In evaluating the number of technological civilizations N in the Galaxy through the Drake formula, emphasis is mostly put on the astrophysical and biotechnological factors describing the emergence of a civilization and much less on its the lifetime, which is intimately related to its demise. It is argued here that this factor is in fact the most important regarding the practical implications of the Drake formula, because it determines the maximal extent of the "sphere of influence" of any technological civilization... (read more)

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  • ASTROPHYSICS OF GALAXIES