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The Search for Extraterrestrial Intelligence (SETI)

The Search for Extraterrestrial Intelligence (SETI)
The Search for Extraterrestrial Intelligence (SETI) In this photograph, taken in the direction of the center of our Milky Way Galaxy, there are, very roughly, a million stars. Optimistic estimates on the abundance of galactic civilizations suggest that a million stars must be examined before we have a fair chance of detecting an alien signal. This is one reason that serious SETI programs require substantial commitments of time. David L. Talent, ©1978 The Association of Universities for Research in Astronomy, The Cerro Tololo Inter-American Observatory