SETI's 1977 "Wow!" signal from deep space was even stronger than originally thought, but its source remains a complete mystery.

A super powerful space laser could be the source of a mysterious signal that has puzzled astronomers for nearly 50 years. No, not a warning shot from an alien civilization, but rather the work of a ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. "Wow!" signal printout. The comment on the side inspired the event's name. | Credit: Big Ear ...

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 ...

On August 15, 1977, a large radio telescope at Ohio State University — which went by its more popular name "The Big Ear" — received a mysterious signal that got immortalized as "the WOW! signal" in ...

The "Wow!" signal has been etched with a red marker in the memory of advocates for the search for extraterrestrial intelligence (SETI) since its unveiling in 1977. To this day, it remains one of the ...

In 1977, astronomer Jerry R. Ehman observed a data signal so unique he drew a red circle around it and wrote “Wow!” to emphasize the discovery. The source of the signal was never identified, leading ...

This month an astronomer claimed to have debunked a mysterious 1977 radio signal from deep space, but other scientists aren't buying his theory. Eric Mack has been a CNET contributor since 2011. Eric ...

The Wow! alien signal may have come from the constellation Sagittarius. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Researchers may have ...

In August 1977, the Ohio State University Radio Observatory picked up a radio transmission from the Sagittarius constellation that was so strong it inspired the astronomer who discovered it to write ...