These findings suggest that the absence of past detections does not mean discovery is imminent. If extraterrestrial technologies exist and have already sent signals that reached Earth, they are likely ...

What would happen if aliens contacted us? It's a longstanding question that now has at least a partial answer after a transmission designed to mimic correspondence from an extraterrestrial ...

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 ...

One of the most famous messages ever beamed to space was a string of 1,679 bits sent by the Arecibo radio telescope in 1974. But if E.T. sent us such a string, how could we Earthlings even begin to ...