When you think of threats from outer space, you might picture deadly solar flares, planet destroying asteroids, or even a ...

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

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Some of the greatest sci-fi movies of all time revolve around humans in a desperate struggle for survival. Sometimes we're ...

On June 24, 1947, the civilian pilot Kenneth Arnold reported seeing nine objects, glowing bright blue-white, flying in a “V” formation over Washington State’s Mount Rainier. He estimated their flight ...