Kellin? There's no one here by that name.

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

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

It's a strange sight, to be sure: thousands of sailboat-like gelatinous organisms all arrayed on a beach like the landing of ...

What do aliens sound like? We have no idea, but for Hollwood's smash hit "Project Hail Mary", that was the question that ...

Award winning duo James S. A. Corey show humanity’s struggle with staggering alien power in their latest installment of the ...

From fish and turtles, to hippos and crocodiles, about 43% of all known large freshwater animal species have been ...

Over four decades, the Alien franchise has brought many different versions of the xenomorph creature to theaters.

If you trace the animal family tree back through the fossil record, the trail usually goes cold about 539 million years ago. Before this boundary—the start of the famous Cambrian explosion—multicelled ...

Some animals are so unusual that they barely look real, and transparent creatures are among the strangest of them all. These ...

Because there's more to extra-terrestrial life than humans with prosthetics stuck to their foreheads.

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...