No alien signal: most sensitive radio scan of interstellar comet 3I/ATLAS comes up empty
Breakthrough Listen researchers found no artificial radio signals from interstellar comet 3I/ATLAS during a deep scan with the Green Bank Telescope on Dec. 18. The comet passed Earth at 1.8 astronomical units in December and is now fading. No technosignatures were detected across multiple observatories. Astronomers continue tracking the object to refine orbital measurements.