Friday, 14 February 2014

Why It's So Hard to Find Alien Life

Why It's So Hard to Find Alien Life
Feb 14th 2014, 16:00, by Paul Gilster - Centauri Dreams

Why It's So Hard to Find Alien LIfe
A big reason why the Fermi paradox has punch is the matter of time. Max Tegmark gets into this in his excellent new book Our Mathematical Universe (Knopf, 2014), where he runs through what many thinkers on the subject have noted: Our Sun is young enough that countless stars and the planets that orbit them must have offered homes for life long before we ever appeared. With at least a several billion year head start, wouldn't intelligent life have had time to spread, and shouldn't its existence be perfectly obvious by now?
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