If Earth’s astronomical observatories were to pick up a signal from outer space, it would require an all-hands-on-deck effort to untangle and decipher the extraterrestrial message. An art project from ...

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 “coherent” radio signal has been detected from an alien planet, suggesting it could be more likely to be habitable. The signal suggests that the planet has its own magnetic field, which is thought ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo credit: Jeff Dai/Stocktrek Images - Getty Images (popular_mechanics_642) A Chinese radio telescope detected radio signals ...

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 ...

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A .

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 ...