Scientists failed to find radio signals emanating from the interstellar comet 3I/ATLAS, further bolstering its status as a natural object, not one made by aliens.

Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty

Source: space
Source Link: https://www.space.com/space-exploration/search-for-life/not-an-alien-spacecraft-hunt-for-technosignatures-around-interstellar-comet-3i-atlas-comes-up-empty