The first unmistakable sign of extraterrestrial technology may not arrive as a calm greeting. It may look more like a flare.

Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the ...

A recent SETI Institute study suggests that space weather could blur and weaken extraterrestrial radio signals long before ...

The search for alien life no longer feels like pure speculation. This video walks through the strongest signs ever put forward, from the Wow Signal to Martian fossil claims and other near-breakthrough ...

If advanced aliens lived on a planet within a few hundred to a thousand light years away from Earth, then vast numbers of their signals must already have crossed Earth without being noticed, a new ...

A mysterious radio signal has been traced to a galaxy far, far away. And, it's causing a stir among astronomers -- although nobody is sure what it is. Research published this week in the journal ...

If it were a phone call, we might call it a butt dial: A strong radio signal that set off questions about whether it emanated from an advanced alien race earlier this week is now believed to have come ...

We may have been missing signals from intelligent aliens because of solar wind. Researchers from the Search for Extraterrestrial Intelligence (SETI) Institute say this means we have been watching for ...