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

The most consequential signal humanity ever detects from another civilization may not arrive as a calm introduction. It may ...

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

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Turbulent star environments may broaden alien radio signals, making them harder for SETI to detect. (CREDIT: Shutterstock) Radio ...

Advanced aliens could be chatting with each other using light flashes in plain sight, similar to how fireflies communicate, according to a new study that could lead to new approaches in finding ...

SETI researchers may have missed alien signals due to a cosmic phenomenon that distorts narrowband radio waves, new research ...

Aliens: "Sorry, you're cutting out!" The post Something May Be Scrambling Alien Messages, NASA-Funded Research Finds appeared ...

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 ...