Some people treat the idea of aliens as nonsense, but scientists actually believe that the notion we're alone in the entire universe is alien! The universe is so vast and so unexplored that ...

Add Yahoo as a preferred source to see more of our stories on Google. The latest tranche of government UFO documents includes a report of an anomalous object hovering over a Texas nuclear weapons ...

Is intelligent alien life really out there? With powerful telescopes identifying more potentially habitable planets each year ...