The inhabited planets quantity in the Galaxy and Universe according to the SETI. The civilization development strategies

Basing on the new physical approach in description of the characteristics of alive matter, the author obtained a numerical values for mass of living matter in the Universe, quantity of biospheres in the Universe (N_bio≈3,3·10¹⁸), quantity of biospheres in the Galaxy (N≈(1±0,5)·10⁸). The calculated average distance between biospheres in the Galaxy is I≈25light years. However, the probability of disclosure of an extra-terrestrial civilization, analogous to Earth one, is too small, P≈10^-5. It is shown, that a paradigm of the expansive and extensive development of the modern technological civilization in the bounds of SETI is useless principally. A strategy of intensive growth of civilization using the low-energy quantum technologies is more realistic. In that case, the radiation of civilization becomes low and it is very difficult to detect such civilization in the electromagnetic diapason.