The most far-seeing search ever performed for “Dyson spheres” and other artifacts of “astroengineering” comes up empty. Where is everybody? --
Alien Supercivilizations Absent from 100,000 Nearby Galaxies
Scientific American - 17 Apr 2015 17:25
The most far-seeing search ever performed for “Dyson spheres” and other artifacts of “astroengineering” comes up empty. Where is everybody? --
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