Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

The UFO phenomenon has captured the imagination of the American public for nearly eight decades. Now, with recent ...

The Fermi Paradox asks a simple but unsettling question: if the universe is so vast, why haven’t we found evidence of alien civilizations? Scientists have proposed many explanations, but some of the ...

The Proof Is Out There” is back this Friday, March 6. Watch the season 6 premiere at 10 p.m. ET on the History Channel.

Government officials have said little about Trump’s most recent social media post on the matter. The president cited “tremendous interest” in the files, whatever they might contain. Perhaps the most ...

Former President Barack Obama has clarified comments he made last week about the existence of aliens. He said in an Instagram post on Sunday that he was trying to “stick with the spirit” of his ...

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Former U.S. President Barack Obama said he did not see evidence that aliens “have made contact with us,” after sending social media abuzz by saying aliens were real on a podcast over the weekend.

Add Yahoo as a preferred source to see more of our stories on Google. In an Instagram post on Sunday, former President Barack Obama said he has not seen evidence of the existence of aliens after ...