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Planetary Defense News 23 September 2025 - 2 December 2025

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

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
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Interstellar Comet 3I/ATLAS Update – UN Planetary‑Defence Drill, New Orbit Data And NASA’s Latest Verdict (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
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3I/ATLAS Interstellar Comet: UN Planetary‑Defence Campaign Begins as Mars Data Sharpens Its Path

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
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Interstellar Comet 3I/ATLAS Today (Nov. 27, 2025): UN Planetary‑Defense Drill Begins, New Trajectory Data and Fresh “Alien Probe” Claims

Interstellar Comet 3I/ATLAS Today (Nov. 27, 2025): UN Planetary‑Defense Drill Begins, New Trajectory Data and Fresh “Alien Probe” Claims

As of November 27, 2025, Earth’s newest interstellar visitor is back in the pre‑dawn sky, at the center of a United Nations planetary‑defense exercise and a wave of viral speculation. Here’s what’s actually happening with comet 3I/ATLAS today. Quick overview
27 November 2025
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Interstellar Comet 3I/ATLAS Today: UN Planetary‑Defense Drill, New “Anomaly” Images and How to See It – November 26, 2025

Interstellar Comet 3I/ATLAS Today: UN Planetary‑Defense Drill, New “Anomaly” Images and How to See It – November 26, 2025

Published: November 26, 2025 Interstellar comet 3I/ATLAS has just gone from “cool space story” to a centerpiece of planetary‑defense practice, scientific debate and sky‑watching buzz. Today, the United Nations–backed International Asteroid Warning Network (IAWN) confirmed that 3I/ATLAS is the focus of a formal observing campaign
26 November 2025
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Interstellar Comet 3I/ATLAS on 18 November 2025: New Multi‑Tailed Image, NASA’s Big Reveal and a Planetary‑Defense Rehearsal

Interstellar Comet 3I/ATLAS on 18 November 2025: New Multi‑Tailed Image, NASA’s Big Reveal and a Planetary‑Defense Rehearsal

Updated 18 November 2025 Interstellar comet 3I/ATLAS is having a huge day in the headlines. As of today, 18 November 2025, astronomers have unveiled a spectacular new multi‑tailed image, NASA has confirmed details of a live global broadcast tomorrow to share the sharpest spacecraft
18 November 2025
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