ETI In the Sky

What the Search for Extraterrestrial Intelligent Life Means for Us

During my graduate school days at the University of Toronto (late 1960s) I took a short summer course, Advances in Planetary Physics, taught by astronomer Carl Sagan. Sagan was a rising star then and well on his way to becoming the science popularizer and communicator for which he later became famous. Most of the course and nearly all of the informal evening discussions focused on the possibility that extraterrestrial intelligent life existed and on the kinds of civilizations such beings would have established. In Sagan's mind, there was absolutely no doubt that extraterrestrial intelligent beings (ETI) existed. Furthermore, he was convinced that on many planets in our galaxy ETIs had developed civilizations...


is an astrophysicist and the founder and president of the science-faith think tank Reasons to Believe (RTB).

This article originally appeared in Salvo, Issue #36, Spring 2016 Copyright © 2020 Salvo |


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