Advanced aliens could be chatting with each other using light flashes in plain sight, similar to how fireflies communicate, ...

It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

Historically, many scientists and society have been fascinated by the prospect of making contact with extraterrestrial ...

Radio telescopes have long scanned quiet patches of sky for a lone, artificial-sounding ping, but a growing body of research ...

Machine learning is quietly rewriting the rules of the cosmic hunt for company. Instead of waiting to recognize familiar ...

A distant pulsar’s radio signal flickers as it passes through space, much like stars twinkle in Earth’s atmosphere. By ...

The recent, widely covered signal that's allegedly got SETI hot and bothered is almost certainly not aliens. But that doesn't mean it's not cool. Share on Facebook (opens in a new window) Share on X ...

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What if the first signal ever detected from an alien lifeform wasn't a ...