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Planets are common.
A brine martini - shaken and stirred . . Current Search Projects Books we recommend General Information SETI information regarding the various SETI projects supported by the Planetary Society Declaration of Principles Concerning Activities Following the Detection of Extraterrestrial Intelligence , a document developed over a period of several years by the SETI Committee of the International Academy of Astronautics to serve as a guide for what happens when we actually DO detect a message from an extraterrestrial civilization. Fact and Fiction a page by the SETI Institute that servesto point out a few differences between the actual and screen versions of the SETI Institute. An equation developed in the 1960's by Dr. Frank Drake conceived an approach to bound the terms involved in estimating the number of technological civilizations that may exist in our galaxy. A Decision Process for Examining the Possibility of Sending Communications to Extraterrestrial Civilizations , a position paper by the International Academy of Astronautics which looks to begin serious international consultation on the question of future attempts to deliberately transmit electromagnetic signals from Earth to extraterrestrial civilizations.