Extraterrestrial intelligence and galactic nuclear activity

Details Extraterrestrial intelligence and galactic nuclear activity Extraterrestrial intelligence and galactic nuclear activity

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...46...94c&link_type=abstract

Icarus, vol. 46, Apr. 1981, p. 94-96.

Mathematics

Logic

11

Cosmic Rays, Extraterrestrial Intelligence, Galactic Nuclei, Seyfert Galaxies, Interstellar Magnetic Fields, Nuclear Explosion Effect, Ozonosphere, Ultraviolet Radiation

Scientific paper

After many years of searching, no evidence has been found for the existence of any technological civilization but our own. The conclusion that we are therefore alone in our galaxy has seemed unacceptable, for lack of a plausible explanation. Earlier authors have suggested that there may be Seyfert-like outbursts from the galactic nucleus, with a period of approximately 100-million years. It is proposed here that this phenomenon could provide the needed explanation for the nonexistence of ETI. The question of why we ourselves have survived is considered.

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