How could the principle of "radical mundanity" proposed by the Fermi paradox help explain why humans haven't found evidence ...

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A new study argues that conditions necessary for intelligent extraterrestrial life may be far less common than once thought. Planets lacking plate tectonics and sufficient carbon dioxide and oxygen ...

Complex, intelligent life in the galaxy appears vanishingly rare, with the nearest possible civilization perhaps 33,000 light-years distant. Yet despite the odds, scientists insist that continuing the ...

Human civilization ranks 0.72 out of 3 on the scale of technological advancement, far from controlling planetary, stellar, or ...

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...

"Although ETIs might be rare, there is only one way to really find out, and that is by searching for it." A new study argues that conditions necessary for intelligent extraterrestrial life may be far ...