In a series of papers, amateur astronomer and exoplanet researcher Alberto Caballero narrows down who could have sent the Wow! Signal and how many hostile civilizations could be listening to our transmissions. The post There Could Be Four Hostile Civilizations in the Milky Way appeared first on Universe Today.
In a series of papers, amateur astronomer and exoplanet researcher Alberto Caballero narrows down who could have sent the Wow! Signal and how many hostile civilizations could be listening to our transmissions. The post There Could Be Four Hostile Civilizations in the Milky Way appeared first on Universe Today.
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