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Abstract

The available observational date and cosmological models indicate the possible existence of supercivilizations with ages of technological development 6-8 gigayears larger than on the Earth. The probability of their detection is probably conne with observations at wavelengths from 3 mcm to 3 mm, and also with the solution of the hidden mass problem and searches for multiconnection of the Universe.

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Kardashev, N. Cosmology and Civilizations. Astrophysics and Space Science 252, 25–40 (1997). https://doi.org/10.1023/A:1000837427320

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