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 ...

What you'll discover in this article ・The Search for Extraterrestrial Intelligence has mostly focused on a narrow range of ...

Looking ahead: Existing radio surveys may contain signals that were never recognized as potential technosignatures. New ...

SETI's search for extraterrestrial signals reached 21 times more stars than any prior published survey had claimed, according ...

Critics dismiss President Donald Trump’s UFO whistleblower waivers as "kabuki theater," while astronomers quietly ...

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

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

Astronomers may have been listening for alien civilizations in only a small slice of the radio spectrum while overlooking a largely unexplored range of higher frequencies. Using archived data from the ...

The Search for Extraterrestrial Intelligence (SETI) has a data scale problem. There are just too many places to look for an interstellar signal, and even if you're looking in the right place you could ...

SETI may have missed alien signals for 60 years because stellar plasma smears transmissions into noise, a new Astrophysical Journal study finds.

The recent, widely covered signal that's allegedly got SETI hot and bothered is almost certainly not aliens. But that doesn't mean it's not cool. Share on Facebook (opens in a new window) Share on X ...

In March 2026, SETI Institute researchers contributed to a wide range of conversations about our solar system and the search for life beyond Earth. From explaining unusual features on Mars and ...