The Great Filterhttps://mason.gmu.edu/~rhanson/greatfilter.html
future. Reconsidering AstroPhysics There are also several ways in which we might reconsider our understanding of physics and astronomy to help explain the Great Filter. One possib
What's New! January 1994http://home.mcom.com/home/whatsnew/whats_new_0194.html
Herzberg Institute of Astrophysics of the National Research Council of Canada. The observatory instruments are particulary suited to comprehensive studies of the interstellar envi
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