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

Attention human. You are receiving an interstellar radio transmission. And it could be coming from one of the nearest exoplanets, Proxima Centauri b. What conditions make this planet a candidate for ...

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 ...

The Search for Extraterrestrial Intelligence (SETI) is a dream of humanity, but advanced extraterrestrial civilizations do not necessarily communicate in the same way as humans. A paper published on ...

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

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.

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

"There is a silence in the night sky that has bothered me for as long as I can remember." That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

When people imagine first contact with aliens, they often picture giant ships in the sky or wise beings sending peaceful messages. A new scientific idea suggests something very different. According to ...