Scientists found that planets with life produce more complex, information-dense signals than nonliving worlds.

For decades, humanity has listened to the cosmos, hoping that somewhere among the stars another civilization might be trying to reach us. Powerful telescopes scan distant worlds, radio antennas search ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of biology because they are often produced by living microbes. However, ...

A new study by the SETI Institute has found that stellar "space weather" could make radio signals from extraterrestrial intelligence more difficult to detect by altering them before they leave their ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, humanity has scoured the cosmos for any signs that we aren't alone in the universe. But now, researchers at the SETI ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets. Things mistaken for UFOs. In the search for alien life, humans have been fooled ...

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 ...

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 ...

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For six decades, SETI researchers have been pointing their radio telescopes at a narrow slice of the electromagnetic spectrum and telling the world what they found — or more precisely, what they did ...