The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life. The problem is not finding the star.

E.T. the Extra-Terrestrial was a global phenomenon that spawned many knockoffs, with films like Purple People Eater, Badi, ...

Hidden deep within southern Siberia lies one of the most mysterious places on Earth. At first glance, Lake Baikal looks like ...

In the book version of “Project Hail Mary,” author Andy Weir, known for grounding his fiction in plausible science, describes ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

Octopuses, bees, and dogs all process information differently. Even within the narrow confines of one planet, evolution produced a wide range of nervous systems rather than a single design. A new ...

What if consciousness isn’t limited to brains like ours? Philosophers Eric Schwitzgebel and Jeremy Pober argue that ...

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