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Skywatching

Comet 3I/ATLAS Update (Dec. 12, 2025): First X‑Ray View, Green Glow, and How to Spot the Interstellar Visitor

Comet 3I/ATLAS Update (Dec. 12, 2025): First X‑Ray View, Green Glow, and How to Spot the Interstellar Visitor

On December 12, 2025, the rare interstellar comet 3I/ATLAS (also written 3I/Atlas) is back in headlines for two reasons: a newly released X‑ray view from ESA’s XMM‑Newton and fresh Gemini North telescope images showing the comet looking noticeably greener—all as the object heads toward its closest approach to
13 December 2025
Interstellar Comet 3I/ATLAS Nears December 19 Flyby: New Hubble Photos, First X‑Rays and How to See It Today

Interstellar Comet 3I/ATLAS Nears December 19 Flyby: New Hubble Photos, First X‑Rays and How to See It Today

On December 9, 2025, interstellar comet 3I/ATLAS (also known as C/2025 N1 (ATLAS)) is racing through the inner solar system, just 10 days away from its closest approach to Earth. Today’s wave of new images and data — from Hubble, ESA’s JUICE spacecraft, Japan’s XRISM X‑ray observatory, ALMA, and both
9 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
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
Northern Lights Alert: Best Places, Timing & Photography Tips for 2025’s Auroras

Severe G4 Geomagnetic Storm Is Lighting Up U.S. Skies — Northern Lights Could Return Tonight (Nov. 12, 2025) NOAA confirms a severe storm; where and when to look, what’s driving it, and what it can affect

Key points NOAA: Severe storm confirmed, more to come The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center (SWPC) reported that G4 (Severe) geomagnetic storm conditions were observed at 01:20 UTC on Wednesday, Nov. 12 (8:20 p.m. ET Tuesday).
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