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

Scientists suggest the first alien signal we detect could be a desperate cry for help from a fading civilization.

A NASA astrophysicist argues alien civilizations may be out there—but too quiet or distant for us to detect. Here’s the new ...

A NASA-backed study reveals that alien civilizations could detect human signals sent to spacecraft. Radio transmissions aimed at Mars rovers and orbiters aren't fully contained, creating a 'spillover' ...

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What if the first signal ever detected from an alien lifeform wasn't a ...

Historically, many scientists and society have been fascinated by the prospect of making contact with extraterrestrial ...

Astronomers are actively investigating unexplained cosmic signals, including the famous 'WOW' signal from 1977, which still lacks a definitive natural explanation. The recent detection of ASKAP ...

The Allen radio telescope array at Hat Creek, California, was tilted towards a piece of the Pisces constellation which has been under Kepler’s careful scrutiny in recent years — it’s sensitive ...

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 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 ...