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

The aliens were next door, and somebody killed them. That’s the story plasma physicist John Brandenburg, PhD, tells about ...

Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, "Mystery Hum and Mayans on Mars." ...

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

Assuming our solar system’s newest interstellar object isn’t an alien mothership sent here to menace us, humankind still hasn’t spotted any signs of extraterrestrial life, let alone intelligence — ...

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 ...

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 ...

Is anybody out there? Probably. Most stars have planets; we've discovered more than 6,000 exoplanets thus far, and the most basic statistics point toward the existence of countless potentially ...

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 ...

We’ve likely had at least one close encounter of the 3I kind before. Harvard scientist Avi Loeb claims that not only does 3I/ATLAS potentially have alien origins, but that this wouldn’t be the first ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got stranded on earth when his alien compadres abandoned their botany mission. In ...

Get full access to The Daily Beast for $1 If scientists sift through the Moon’s surface, we could find microscopic dust suggesting alien life, an Oxford astrophysicist suggested NASA/NASA via Getty ...