From The Matrix to 2001: A Space Odyssey, these sci fi masterpieces grip you with ideas so strong they never let go.

Ellen Ripley, Willy Wonka, Carrie White, Superman, Darth Vader, and more make up our list of movie characters that defined ...

High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for potential alien life elsewhere. Saturn's moon Enceladus (shown here in a 2006 ...