The Fermi paradox asks why we haven’t found aliens yet. Scientists say the answer may lie in timing, technology, and the vast ...

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

The search for intelligent alien life goes far beyond listening for simple radio signals. This documentary explores how ...

The Search for Extraterrestrial Intelligence (SETI) is a dream of humanity, but advanced extraterrestrial civilizations do not ...

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that finding—which ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth could thus be overlooking prime evidence of alien intelligence.

Aliens in Our Imagination: Friendly or Frightening? From the pointy ears of the Vulcans to the razor-sharp teeth of the ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new ...

When people imagine first contact with aliens, they often picture giant ships in the sky or wise beings sending peaceful messages.

"There is a silence in the night sky that has bothered me for as long as I can remember." That line, attributed to Richard ...