Most alien-signal searches listen to a narrow part of the radio spectrum, but astronomers are now testing higher frequencies that have barely been explored. A first search using archived ALMA ...

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has ...

Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more ...

Astronomers searching for signs of extraterrestrial intelligence may have been missing alien signals in part of the radio ...

Most SETI attempts have focused on a narrow stretch of the radio spectrum known as the “water hole." ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more natural source.

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 ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that ...

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 ...

Archived radio observations could open new frequencies to SETI while showing that past searches covered millions more stars ...

Could the interstellar object 3I/ATLAS exhibit technosignatures, or signals of alien technology? This is what a recent study published in The Astronomical Journal hopes to address as a team of ...

Advanced aliens could be chatting with each other using light flashes in plain sight, similar to how fireflies communicate, according to a new study that could lead to new approaches in finding ...