Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.
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Scientists study 100 possible alien radio signals from collapsed Arecibo Observatory, ending groundbreaking 21-year search
A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...
The History Channel series returns January 15 with "Skulls of the Gods," examining whether these archaeological finds have ...
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