Aliens lived on a certain planet.They had built a civilization far more advanced than Earth's.They had overcome disease, aging, and even death. As a result, the planet's surface became too small, so t ...

An enormous rectangular-shaped 'structure' has been spotted on a map of the seafloor, sparking theories that an alien base could be hiding deep below the surface.

With the release of "Disclosure Day," Steven Spielberg's new film about aliens, a question as old as science fiction itself resurfaces: If aliens were to arrive on Earth, would they come to conquer us ...