Key Findings A new deep-sky image of 3I/ATLAS captures a tail so long and sharply defined that it stretches more than fifteen times the Earth–Moon distance. Its structure shows knots, twists, and straight segments that depart dramatically from normal cometary behavior. And for the first time, we can measure its full extent with high precision A new image of 3I/ATLAS reveals a sharply collimated 6.5-million-kilometer tail, segmented structures, helical distortions, and multiple jet anomalies that defy standard comet physics. Our forensic analysis breaks down the unprecedented behavior seen in the November 25, 2025 image by astrophotographer Julien de Winter.