Dr. Michio Kaku: 3 types of Extraterrestrial Civilizations
Dr. Michio Kaku, theoretical physicist and co-founder of string field theory, a branch of superstring theory, speaks about 3 types of Extraterrestrial Civilizations.
Author: sergejsh
Length: 07:54
Views: 104068
Tags: astrobiology Civilization et exobiology Extraterrestrial Kaku life Michio space ufo
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