3I/ATLAS Today (Nov. 11, 2025): Interstellar Comet Reappears with Growing Ion Tail, Morning-Sky Return & Rumor Control
Updated: November 11, 2025 Key points at a glance What’s new today A longer, sharper tail. Astrophysicist Gianluca Masi reports that 3I/ATLAS’s ion tail has lengthened to at least 0.7°, with an anti‑tail also apparent in stacked exposures taken this