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

The most consequential signal humanity ever detects from another civilization may not arrive as a calm introduction. It may appear as a brief, violent spike in the data a burst so unusual that it ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. However, no confirmed technosignatures like artificial radio transmissions, laser flashes, or excess heat from large-scale alien ...

Discover the mysterious ‘Wow!’ signal, a 1977 transmission that sparked decades of speculation about extraterrestrial life.

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A new statistical study considers a narrower and ...

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 ...