Overview
- Avi Loeb says JPL tracking shows the first evidence of non‑gravitational acceleration near perihelion and raises a speculative artificial‑origin hypothesis.
- NASA and the European Space Agency state the object’s activity fits a natural comet and report no anomalous signals.
- Observers have noted unusual features, including an anti‑tail, a blue hue, and atypical passages near Jupiter, Venus, and Mars.
- Closest approach to Earth is forecast for December 19 at about 267 million kilometers, followed by departure from the Solar System after January 2026.
- An international campaign led by major observatories and IAWN continues, with Hubble/ESA reporting volatile and metallic signatures as size estimates range from very small to as large as roughly 20 kilometers.