"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

A new Alien: Earth teaser has set up the alien invasion of earth the show revolves around. The brief clip, below, shows events from the point of view of an alien as it races through the interior of a ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...