![](https://www.extremetech.com/wp-content/uploads/2015/12/Planets-under-a-red-sun-300x166.jpg)
A theory on why we don't see more life (much less alien civilizations) argues that life might arise easily, but go extinct within a billion years of planetary formation.
The post Where Are All the Aliens? Maybe They’re Mostly Microbial (and Dead) appeared first on ExtremeTech.
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