Humans have wondered for centuries whether we are alone in the universe — and a new study suggests that if alien ...

The first unmistakable signal from another intelligence may not be a cheerful greeting. A growing group of researchers is arguing that our inaugural contact is more likely to be a distress call, the ...

These findings suggest that the absence of past detections does not mean discovery is imminent. If extraterrestrial ...

The history of astronomical discovery shows that many of the most detectable phenomena, especially detection firsts, are not ...

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

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 ...

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 ...

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 ...