planetary defence

Interstellar Comet 3I/ATLAS on November 28, 2025: UN Planetary‑Defence Drill, NASA’s Verdict and How to See It

Published: November 28, 2025 Interstellar comet 3I/ATLAS – only the third known object from another star system to visit our Solar System – has just stepped into a new role. As of today, it’s the centerpiece of a United Nations–endorsed planetary‑defence exercise, the

28 November 2025

Interstellar Comet 3I/ATLAS Update – UN Planetary‑Defence Drill, New Orbit Data And NASA’s Latest Verdict (28 November 2025)

As of Friday, 28 November 2025, interstellar comet 3I/ATLAS has gone from “weird new visitor” to the centerpiece of a United Nations–endorsed planetary‑defence drill, a live trajectory experiment using spacecraft around Mars, and a lightning rod for speculation about alien technology. The Times of

28 November 2025

Astronomy · Comet Discoveries · NASA News · Planetary Defense · Space Exploration

3I/ATLAS Interstellar Comet: UN Planetary‑Defence Campaign Begins as Mars Data Sharpens Its Path

On 27 November 2025, interstellar comet 3I/ATLAS hits a major milestone in its brief visit through our Solar System. The United Nations’ planetary‑defence network is officially turning the comet into a live global drill, while new data from spacecraft around Mars has tightened its predicted

27 November 2025

Astronomy · Comets · Planetary Defense · Science News · Space Exploration