Alien Supercivilizations Absent from 100,000 Nearby Galaxies

17 abril 2015

The most far-seeing search ever performed for “Dyson spheres” and other artifacts of “astroengineering” comes up empty. Where is everybody?

— Read more on ScientificAmerican.com

http://rss.sciam.com/~r/sciam/physics/~3/vPF9btGebcA/