What would happen, then, should the first unquestionable indication of alien technology come in the form of a momentary flare, powerful enough to be observed, but too short to question? The ...

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 ...

TL;DR: In May 2023, the ESA's ExoMars Trace Gas Orbiter sent an "alien signal" to Earth as part of an art project called "A Sign in Space," aimed at testing the process of deciphering potential alien ...

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp ...

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The search for extraterrestrial intelligence (SETI) has yet to detect alien technosignatures like radio waves, but the cosmos is vast, and there are plenty of places left to look. New research ...

Estimating the chance of getting a message from life beyond Earth, say within the next decade, isn’t easy. Even the best experts are reluctant to offer precise odds. “Anybody who gave you a figure ...

On August 15, 1977, the Big Ear Radio Telescope in Delaware, Ohio, received the most powerful signal it would ever detect during its decades of observations. The signal lasted just 72 seconds, but ...

(CNN) — 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 ...