An advanced alien civilization arrives on Earth, and humanity has just 48 hours to respond. This hypothetical scenario ...

Scientists have pieced together a pretty clear picture of what life was like on Earth thousands, even millions of years ago.

A massive spaceship appears in the night sky. Communications are cut off, and cities around the world are attacked. Humanity rises above national borders to make a final stand against an enemy with ...

Steven Spielberg has long made movies about aliens, like 'Close Encounters of the Third Kind' and 'Disclosure Day', now ...