Bad news for those hoping interstellar invader 3I/ATLAS is an alien spacecraft as technosignature search turns up empty.

If the Milky Way ever hosted a star-faring civilization, its most durable monument may not be a beacon, a ruined spacecraft or a city-size machine. It may be dust. A team of researchers argues that ...

The next major search for extraterrestrial intelligence might involve putting Moon dust under a microscope rather than pointing a radio telescope toward the stars. A new study led by SETI Institute ...