science-junkie: In 1963 on his “Transmission of Information by Extraterrestrial Civilizations” the Russian astronomer Kardashev proposed a system to classify any extraterrestrial civilizations based on the energy available to them in order to make
science-junkie: In 1963 on his “Transmission of Information by Extraterrestrial Civilizations” the Russian astronomer Kardashev proposed a system to classify any extraterrestrial civilizations based on the energy available to them in order to make
science-junkie: In 1963 on his “Transmission of Information by Extraterrestrial Civilizations” the Russian astronomer Kardashev proposed a system to classify any extraterrestrial civilizations based on the energy available to them in order to make
science-junkie: In 1963 on his “Transmission of Information by Extraterrestrial Civilizations” the Russian astronomer Kardashev proposed a system to classify any extraterrestrial civilizations based on the energy available to them in order to make
