Just over 40 years ago, in his novel Contact, astronomer Carl Sagan imagined what it would be like to detect radio signals ...

If advanced aliens lived on a planet within a few hundred to a thousand light years away from Earth, then vast numbers of their signals must already have crossed Earth without being noticed, a new ...

The latest research suggests that communicative civilizations would prioritize efficiency through laser-like directional ...

Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the source of potential signals than previously thought. Conditions around ...

Japan's first SETI group plans radio observations near Sagittarius next August, aiming to decode the 1977 signal Astronomers in Japan have recently launched what they say is the country's first ...

Aliens may have been trying to contact humans for years, suggests new research. But stellar “space weather” could mean radio signals from friendly extraterrestrial intelligence get lost in space, say ...

A new peer-reviewed study challenges long-held SETI assumptions, proposing that advanced civilizations might transmit powerful, highly focused beams at specific targets instead of weak, diffuse ...

What steps can be taken to identify why we haven’t received radio signals from an extraterrestrial intelligence, also called technosignatures? This is what a recent study published in The ...

If it were a phone call, we might call it a butt dial: A strong radio signal that set off questions about whether it emanated from an advanced alien race earlier this week is now believed to have come ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Scientists have searched the skies for alien radio signals for more than 60 years, but all ...