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There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

A nutrition scientist applies metabolism, biology and food science to one of science fiction's oldest questions.

“Disclosure” has become a cult word. It shouldn't be, since all it means, technically, is to reveal something. But the new wave of alien conspiracy theorists have made “disclosure” into a teasingly ...

The White House turned a legal term into a science-fiction spectacle. The real story is not the theatrics. It is how language ...

Disclosure Day treats extraterrestrial life as a challenge to faith. It’s not.

Add Yahoo as a preferred source to see more of our stories on Google. Illustration by Alberto Mier/CNN When the Trump administration registered the domains Aliens.gov and Alien.gov in March, UFO ...

Steven Spielberg's claims of alien visits to Earth spark debate among scientists, who stress the lack of credible evidence ...

The alien thriller leaves audiences with one final directive—and plenty to debate.

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

"Disclosure Day" posits that the U.S. government is concealing proof of aliens. Here's what Steven Spielberg had to say about ...

Our search for technosignatures—clear signs of advanced civilizations beyond Earth—takes many forms. Many are driven by the famous Drake equation, which attempts to estimate how many technological ...