For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp question: if alien signals have already reached Earth without us noticing, what ...

The hunt for intelligent life beyond Earth has quietly entered a more exacting phase, and one small, cool star has become a proving ground for how serious that search can be. TRAPPIST-1, a dim red ...

Astronomers have detected the first-ever "radio signal" coming from the interstellar comet 3I/ATLAS, right as it passed the halfway mark on its oneway trip through the solar system. And while this may ...

Astronomers have been scanning the skies for alien radio signals for decades, but so far they’ve heard nary a peep (with one possible exception). But according to a recent study, that could be because ...

Astronomers have detected a mysterious object in our galaxy that emits intense bursts of radio waves and X-rays with remarkable regularity, every 44 minutes. The signals, coming from a source called ...

A team of UC Berkeley scientists has painstakingly analyzed billions of radio signals received over fifteen years and have zeroed in on 100 that are most likely to be sent by extraterrestrial ...

January brought a wide range of thoughtful science conversations featuring researchers from the SETI Institute, spanning everything from hands-on planetary defense with citizen scientists to careful ...

What does it take to detect a radio signal sent by extraterrestrial life to Earth? Two decades of work involving radio telescopes stationed on opposite sides of the world, a supercomputer in Germany, ...