Some of the most common planets in our galaxy may be hiding far more water than scientists can currently detect—even with the ...

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

A new study challenges the familiar idea that the brain evolved by stacking rational systems on top of primitive emotional ...

Researchers probe the geochemistry of the moon, Mars, asteroids, and water worlds to understand our home and plan for future ...

Far beneath the surface of the ocean lies the largest and least explored habitat on Earth. The deep sea is cold, dark, highly ...

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...

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

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

Scientists have identified new clues that could help astronomers spot one of the most famous hypothetical alien ...

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

If humans vanished, evolution might not crown another primate. One unlikely marine predator has the brain, dexterity, and ...

That little alien emoji staring back from your phone, with its smooth, bulbous head and almond-shaped black eyes, has ...