Thousands of feet below the surface lies a world that looks more like an alien planet than Earth. Towering glass sponges, ...

The plants outside your window carry a hidden geography. Many arrived from distant continents. A new global forecast shows that mix is about to shift, in ways few people notice until it takes hold.

For instance, what if we really are being visited by aliens from other worlds and they turn out to be aggressive, violent, ...

Star Trek can usually make rubber forehead aliens not just cool, but turn them into pop culture icons. Their five worst ...

Alas, it’s not a study-abroad course – yet – but exoplanets may provide insight into how life formed on Earth.

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got ...

Whether you're introducing a new alien species or even a new planet, there are only so many "firsts" you can introduce in Star Wars. For Star Wars: Acolyte, it was a whip lightsaber. For the Star Wars ...

What are the processes necessary to do so? Can life travel from one planet to another? If so, how? Today's technology brings ...

Earth' Season 2 Behind the Scenes - Ollie Upton/FX As we gear up for the continuation of the Earth-based adventure, we're ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...