Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

The first unmistakable sign of extraterrestrial technology may not arrive as a calm greeting. It may look more like a flare.

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 ...

The most consequential signal humanity ever detects from another civilization may not arrive as a calm introduction. It may ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological ...

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Add Yahoo as a preferred source to see more of our stories on Google. Sometimes it seems like we got to the galactic party late and everyone has already gone home. Our species only figured out how to ...

If intelligent aliens are out there, why aren’t we hearing from them? Are they silently observing us like zoo animals, or staying quiet out of fear that they’d catch the attention of a bloodthirsty ...