Overview
- A NASA SPHEREx analysis led by Michael Werner finds up to roughly 20 times more water, CO, CO₂ and organic volatiles released after the Oct. 29, 2025 perihelion.
- The comet appeared comparatively quiet before perihelion, then became far more active as solar heating reached deeper ices in the nucleus.
- Breakthrough Listen observations with the Allen Telescope Array, MeerKAT and the Green Bank Telescope reported no artificial radio emissions.
- Earlier observations, including Hubble, indicated a CO₂‑dominated coma and unusual dust behavior, with changing jets and a sunward anti‑tail.
- Scientists are tracking a March 2026 approach to Jupiter that could perturb its trajectory as the rare interstellar visitor continues outbound.