The search for extraterrestrial intelligence (SETI) has yet to detect alien technosignatures like radio waves, but the cosmos is vast, and there are plenty of places left to look. New research ...

Alien civilisations may have just been given a 400,000-fold boost in their chances of finding humans, according to a new ...

Here’s what you’ll learn when you read this story: Even the most sophisticated radio arrays have not yet detected any signals that could have possibly been beamed through space by aliens. But maybe we ...

A NASA-backed study reveals that alien civilizations could detect human signals sent to spacecraft. Radio transmissions aimed at Mars rovers and orbiters aren't fully contained, creating a 'spillover' ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we ...

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 ...