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Add Yahoo as a preferred source to see more of our stories on Google. Illustration by Tag Hartman-Simkins / Futurism. Source: Getty Images If intelligent aliens are out there, why aren’t we hearing ...

The search for extraterrestrial intelligence (SETI) has been ongoing since the 1960s, yet no confirmed signals from alien civilizations have ever been detected. A new study published in Astrophysical ...

IS this evidence of first contact? UFO aficionados are in a spin after NASA appeared to suggest ancient rock art was planted by aliens. The NASA e-book titled Archaeology, Anthroology, and ...