Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

When scientists search for alien life, they usually look for planets that resemble Earth. The reasoning is simple. Every known living thing depends on liquid water, carbon based chemistry, and the ...

Add Yahoo as a preferred source to see more of our stories on Google. While the buzzy sci-fi series is science fiction (obviously), Dr. Sward says there's plenty of real science peppered throughout.

This fun fictional alien size comparison video lines up extraterrestrial creatures from across movies, TV, comics, and pop ...

The TV series Alien:Earth has introduced a number of new creatures to the much loved, albeit terrifying, Alien franchise. But how realistic are the new aliens? That's a question that we—a trio of ...

With the release of "Disclosure Day," Steven Spielberg's new film about aliens, a question as old as science fiction itself resurfaces: If aliens were to arrive on Earth, would they come to conquer us ...

The story of comet 67P/Churyumov-Gerasimenko and the European Space Agency's Philae spacecraft just got a whole hell of a lot more interesting. After a semi-botched landing resulting in the spacecraft ...

New research has found that a specific form of life may be able to live on one of Saturn’s moons, Enceladus. Enceladus is a ...

The first episode opens with a familiar scenario. We witness a research ship in deep space carrying unknown alien organisms suddenly having an outbreak, with the aliens killing most of the crew. But ...