Scientists failed to find radio signals emanating from interstellar comet 3I/ATLAS, further bolstering its status as a ...

Observations with the Allen Telescope Array set new limits on possible signals from extraterrestrial transmitters.

In May 2026, SETI Institute scientists and affiliates contributed to a wide range of conversations spanning planetary science ...

When Comet 3I/ATLAS entered our solar system last year—only the third known interstellar object to do so—astronomers took ...

The SETI Institute, the nonprofit that conducts a search for extraterrestrial intelligence by examining radio waves for artefacts that are unlikely to be the result of natural processes, thinks it may ...

NASA spacecraft observed the celestial iceball as it swung past Mars last October, venturing within 19 million miles ...

Scientists hunting for radio signals from any form of advanced extraterrestrial life that might be out there trying to contact us are now starting to wonder if something has been messing with their ...

The SETI Institute said Wednesday that extensive radio scans by its telescope in Northern California found no signs of ...

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 ...