Admin Administrator Staff member Mar 18, 2008 23,349 2,759 23,560 Dec 4, 2021 #1 The Kardashev scale classifies hypothetical alien civilizations by how much energy they use. The Kardashev scale: Classifying alien civilizations : Read more Reactions: sam85geo
The Kardashev scale classifies hypothetical alien civilizations by how much energy they use. The Kardashev scale: Classifying alien civilizations : Read more