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

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

TO START: Flip through the bands to find signals. In the log at the bottom, it should say in blue how many signals are in ...

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 ...

A RUSSIAN radio telescope sparked a frenzy earlier this week, with reports it had received a ‘signal’ from outer space. But alien hunters SETI now say it’s a case of mistaken identity. What was ...

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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 ...

A mysterious radio signal detected nearly five decades ago and long speculated to be evidence of extraterrestrial life may finally have a natural explanation, according to new research. The so-called ...

Imagine the terror if a celestial visitor was not only on a collision course with Earth but also sending a mysterious radio signal. While the latest interstellar ...