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Interstellar Objects News 6 December 2025 - 26 December 2025

Comet 3I/ATLAS Today: Latest News, Science Updates, and How to See the Rare Interstellar Comet Before Its Dec. 19, 2025 Flyby

Comet 3I/ATLAS Today: Latest News, Science Updates, and How to See the Rare Interstellar Comet Before Its Dec. 19, 2025 Flyby

Updated Wednesday, Dec. 17, 2025 — Interstellar comet 3I/ATLAS (also referenced as C/2025 N1 (ATLAS)) is now just two days from its closest approach to Earth, and today’s coverage spans everything from practical skywatching advice to fresh scientific analysis of the comet’s “non‑gravitational” motion.  Space+1 On Friday,
17 December 2025
Comet 3I/ATLAS Today (Dec. 15, 2025): The Interstellar Visitor Turns Green Ahead of Its Dec. 19 Flyby

Comet 3I/ATLAS Today (Dec. 15, 2025): The Interstellar Visitor Turns Green Ahead of Its Dec. 19 Flyby

On December 15, 2025, the solar system’s most talked-about “visitor” is back in headlines for two very comet-like reasons: it’s brightening and it’s glowing green. The object is Comet 3I/ATLAS—often shortened to “3I/Atlas comet”—the third confirmed interstellar object ever found passing through our neighborhood, after 1I/ʻOumuamua (2017) and 2I/Borisov (2019). 
15 December 2025
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