Ancient Greeks believed in alien life, as well as in gods, souls, and beings that inhabited the Moon, stars, and Heavens.

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

Fans have been arguing for decades about which superhero is the strongest, but here's the most powerful being in all of ...

Searching for alien languages sheds light on how much human languages have in common—with each other and even with animal ...

Peter Dinklage is about to have another franchise under his belt. The actor has joined the cast of “Alien: Earth” Season 2 at ...

You never have seen an alien peeing standing up in a movie or like, yucking it up with his alien buddies. That's never ...

What would alien life from another planet be like? But we rarely ask the opposite: What would they think of us? Theoretical physicist Avi ...

From the ugly to the awesome to the downright weird, Hollywood has brought a whole cosmos' worth of alien characters to the silver screen — but what do we know about the human beings who portrayed ...

Most alien invasion movies play out the exact same way. Some human beings are going about their lives, spaceships arrive, ...

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...

Star Trek is packed with all sorts of alien, both on the Enterprise and throughout the final frontier, and these are the ...

A growing number of researchers are raising a startling possibility: intelligent extraterrestrial life may already exist—and ...