A new study proposes searching the moon for remnants of ancient extraterrestrial technology. Researchers suggest the moon's surface could preserve microscopic "technosignatures" left by alien ...

Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, ...

Intelligent alien life has remained elusive despite decades of searching the skies, but new technologies and ideas are ...

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are dominated by several recurrent tropes. There's the invasion by a warlike ...

Suppose an alien civilization discovers Earth and decides to investigate. Before it chooses a landing site or considers how ...

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Add Yahoo as a preferred source to see more of our stories on Google. Distance, light speed, biology, and time may explain why alien civilizations never meet. (CREDIT: Wikimedia / CC BY-SA 4.0) "There ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that signal has normally been based on our own current cutting-edge technology. But ...

In the coming month, humans are going to experience their first encounter with an alien civilization as predicted by blind ...

The mathematical certainty that 'they' definitely exist in the universeWhen looking up at the night sky, everyone has surely ...