Where did life on Earth come from? It is one of humanity’s oldest and most fascinating questions. For centuries, people have ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

And if aliens made of different stuff potentially possess consciousness, then why not minds made of silicon, metal, and ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

We've been looking at nature the wrong way, argues Rowan Hooper. If we stop focusing on the individual, we get a whole new picture of how life on Earth – and elsewhere – may have begun ...

Disclosure Day treats extraterrestrial life as a challenge to faith. It’s not.