Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

Here's what one might expect from a series rooted in the "Alien" universe: dimly lit spaceship corridors, sleeping pods, computer screens, something slithering in the shadows and, of course, lots and ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...