This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

A well-known conspiracy theory (also seen in The X-Files) attests that aliens are in communication with the U.S. government, ...

Trump wrote no caption to shed light on the meaning of the image, triggering speculation online.

Flying discs, metallic orbs, and a mysterious cylinder tumbling past the Apollo spacecraft. Those are just a few of the ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Alien Day was this past ...