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 ...

One of the greatest astronomical mysteries of the past few decades, the Wow! signal, has been solved – and it definitely isn’t aliens. In 1977, a team of astronomers listening to the cosmos at Ohio ...

A mysterious radio signal detected nearly five decades ago and long speculated to be evidence of extraterrestrial life may finally have a natural explanation, according to new research. The so-called ...

Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping ...

A mysterious space signal that has never been explained may have come from an equally mysterious object racing through our solar system. Harvard astrophysicist Avi Loeb, who has continued to theorize ...

This year, the US Congress has heard testimonies from "UFO witnesses", suggesting there is more evidence than ever of attempts by alien intelligence to make contact with Earth. But what have been the ...

On Earth, we're constantly detecting signals from deep space. Many of these radio waves and other forms of electro–magnetic radiation can be attributed to natural phenomena such as pulsars, colliding ...

On Earth, we're constantly detecting signals from deep space. Many of these radio waves and other forms of electro–magnetic radiation can be attributed to natural phenomena such as pulsars, colliding ...