Science fiction often shows aliens with human features like eyes, limbs, and faces. But science has a reason for questioning ...

A UFO whistleblower claims aliens walk among us, are billions of years more advanced than humans and may have inspired famous ...

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.

When we imagine alien life, we picture monsters, insects, or tentacles—but what if the most realistic aliens are human-like?

Despite the vast differences in human and bee brains, both of us can do mathematics. As we argue in a new paper published in ...

Comet 3I/ATLAS, a remarkable cosmic entity, began its journey far beyond our solar system, potentially expelled by a cataclysmic event from another star system. It made headlines when it approached ...

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that finding—which won the scientists a portion of the 2019 Nobel Prize in ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.