Comet 3I/ATLAS Today (Dec. 25, 2025): What’s New After the Flyby, What NASA and ESA Just Saw, and Why It Matters
Breakthrough Listen reported no credible radio signals from Comet 3I/ATLAS after scanning it with the Green Bank Telescope on Dec. 18, 2025. The comet, the third confirmed interstellar object, passed Earth safely at 1.8 AU on Dec. 19. NASA and ESA continue to analyze data on its composition and behavior as it moves away from the Sun.