From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Some creative calculations using bug traps, epidemiology and trees suggest there are some 20 million unique insect species on ...

He looks at three of the strangest sea creatures he has ever seen: an alien-looking isopod with armor, spiky legs, and ...

Case in point: Scientists from Tokyo University and Hokkaido University in Japan stumbled across some mysterious jet-black ...

At that stage they aren’t very good at cannibalism, but if a would-be Hulk manages to capture one of its siblings or cousins ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

You've seen the famous aliens, planets and scientists, but now it's time to venture even farther into the depths of space.

If someone told you there’s a place in Wisconsin where the landscape looks like it was borrowed from another planet, you’d ...

Lionfish, mitten crabs and “sea vomit.” Meet eight marine species inadvertently brought to new territory that are taking the ...

In a new paper, researchers examine the possibility of other consciousnesses that take on forms far beyond our imagination.

In the book version of “Project Hail Mary,” author Andy Weir, known for grounding his fiction in plausible science, describes ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...