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

Some people treat the idea of aliens as nonsense, but scientists actually believe that the notion we're alone in the entire ...

Aliens in Our Imagination: Friendly or Frightening? From the pointy ears of the Vulcans to the razor-sharp teeth of the Xenomorph, humanity has never stopped imagining what aliens might look like.