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Comets News 19 November 2025 - 2 December 2025

Interstellar Comet 3I/ATLAS Is Erupting, Pulsing and Powering Planetary‑Defense Drills Ahead of Its December 19 Flyby

Interstellar Comet 3I/ATLAS Is Erupting, Pulsing and Powering Planetary‑Defense Drills Ahead of Its December 19 Flyby

Interstellar comet 3I/ATLAS – also known as C/2025 N1 (ATLAS) – has gone from obscure discovery to the most talked‑about object in the Solar System in just a few months. As of December 2, 2025, astronomers are reporting: All of this is happening while NASA, ESA and observatories worldwide repeat the same core message: 3I/ATLAS is a natural comet from another star system, and it poses no threat to Earth. NASA Science+1 Below is a deep, news‑style rundown of what we actually know today – and what remains a mystery. 1. Quick facts: What is comet 3I/ATLAS? 3I/ATLAS is only the third confirmed interstellar object ever seen passing through
2 December 2025
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Interstellar Comet 3I/ATLAS Makes Closest Approach to Earth on December 19, 2025 — How to See It and Why It Matters

Interstellar Comet 3I/ATLAS Makes Closest Approach to Earth on December 19, 2025 — How to See It and Why It Matters

Updated December 1, 2025 On Friday, December 19, 2025, an ancient visitor from another star system will make its closest pass to Earth. Interstellar comet 3I/ATLAS will sweep by at a distance of about 170 million miles (270 million kilometers) — nearly twice as far away as the Sun and more than 700 times the distance to the Moon.NASA Science+1 It poses no danger whatsoever, but it does offer a once‑in‑a‑lifetime chance: a front‑row seat to the third confirmed interstellar object in history, after 1I/ʻOumuamua and 2I/Borisov.NASA Science+1 Now through mid‑December is the prime observing window for skywatchers with telescopes and for the global fleet of
2 December 2025
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Interstellar Comet 3I/ATLAS: NASA Confirms Natural Visitor as UN Turns It into a Planetary‑Defense Drill

Interstellar Comet 3I/ATLAS: NASA Confirms Natural Visitor as UN Turns It into a Planetary‑Defense Drill

As of 1 December 2025, interstellar comet 3I/ATLAS is racing back out of the inner solar system, sparking a rare combination of hard science, UN‑level planetary‑defense drills and loud public debate over whether this icy visitor is “just” a comet or something more exotic. In the last few days, NASA has formally reiterated that 3I/ATLAS is a natural comet with no alien technosignatures, even as new multi‑spacecraft images and chemical data show it is one of the strangest objects ever observed.Space+2BizzBuzz+2 At the same time, the United Nations and the International Asteroid Warning Network (IAWN) have officially selected 3I/ATLAS as the centerpiece of a months‑long planetary‑defense exercise, while stressing
1 December 2025
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Interstellar Comet 3I/ATLAS: Latest NASA, ESA and UN Updates on the 3I ATLAS Comet (30 November 2025)

Interstellar Comet 3I/ATLAS: Latest NASA, ESA and UN Updates on the 3I ATLAS Comet (30 November 2025)

Published: 30 November 2025 Interstellar comet 3I/ATLAS – also known as C/2025 N1 (ATLAS) or simply the 3I ATLAS comet – is racing out of the inner solar system after a dramatic swing around the Sun. It’s only the third known object ever seen entering our neighbourhood from another star system, and it has triggered an unprecedented response from NASA, ESA and the United Nations. NASA Science+1 As of 30 November 2025, 3I/ATLAS is: Below is where things stand today: what 3I/ATLAS is, what the latest data show and why the world has turned this icy visitor into a full‑scale test of planetary defence. Key facts about the 3I ATLAS comet
30 November 2025
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Comet 3I/ATLAS Today: NASA, UN Drill and Alien‑Probe Claims Explained (Nov. 29, 2025)

Comet 3I/ATLAS Today: NASA, UN Drill and Alien‑Probe Claims Explained (Nov. 29, 2025)

The interstellar comet 3I/ATLAS is now sweeping back out of the inner solar system, but the news cycle around it is only getting hotter. On November 29, 2025, new headlines are mixing hard data from NASA and the UN with high‑profile speculation from physicists Avi Loeb and Michio Kaku about “energy boosts,” “controlled emissions” and even possible alien probes. Here’s a clear, fact‑checked look at what’s actually new today, how comet 3I/ATLAS is behaving, and why scientists say it’s extraordinary but not a threat. Quick facts about comet 3I/ATLAS What’s new about 3I/ATLAS today (Nov. 29, 2025)? Several threads have come together in the last 24–48 hours: Let’s
29 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 trajectory by a factor of ten.Universe Today+1 Here’s what’s happening today, why scientists are so excited — and why you absolutely don’t need to worry about a doomsday comet. What is 3I/ATLAS, and why is it such a big deal? 3I/ATLAS is the third confirmed interstellar object ever seen passing through our Solar System, after 1I/ʻOumuamua in 2017 and 2I/Borisov in 2019. It was
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 that doubles as a planetary‑defense exercise, beginning November 27.iawn.net+2iawn.net+2 At the same time, new amateur images and analyses from Harvard astrophysicist Avi Loeb are fuelling fresh discussion about whether the comet’s jets and tail behave “too strangely” for a purely natural object, even as NASA and ESA firmly maintain that 3I/ATLAS looks and acts like an unusually extreme, but still natural, comet.WIRED+4TS2 Tech+4NASA Science+4 Below
26 November 2025
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3I/ATLAS Comet Today (24 November 2025): NASA Mars Images, Jet ‘Anomalies’, Alien Debate and How to See It

3I/ATLAS Comet Today (24 November 2025): NASA Mars Images, Jet ‘Anomalies’, Alien Debate and How to See It

On 24 November 2025, interstellar comet 3I/ATLAS is at the center of one of the noisiest space-news cycles in years. In the last 24 hours we’ve had: Here’s a full, Google-News-friendly rundown of everything that matters about 3I/ATLAS today, 24 November 2025 — plus how and where you can try to see it. 1. Quick snapshot: What’s new about 3I/ATLAS today? Several key updates dated or reported on 24 November 2025: So: the science is getting sharper, the images are getting better, and the headlines are getting wilder — but the collision risk remains zero. 2. What exactly is 3I/ATLAS – and where is it today?
25 November 2025
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Comets in the Night Sky November–December 2025: How to See Lemmon, ATLAS and Interstellar Visitor 3I/ATLAS Tonight (24 November)

Comets in the Night Sky November–December 2025: How to See Lemmon, ATLAS and Interstellar Visitor 3I/ATLAS Tonight (24 November)

Updated: 24 November 2025 On this late November night, the sky is crowded with icy visitors. A bright green comet, a shattered golden comet, a new long‑period “Swan,” and a rare interstellar comet are all sharing the stage — and today, 24 November 2025, they’re also making headlines. NASA has just released close‑up images of interstellar comet 3I/ATLAS from spacecraft orbiting Mars, while astronomers continue to track the evolving fragments of C/2025 K1 (ATLAS) and the still‑naked‑eye C/2025 A6 (Lemmon).Universe Today+2IFLScience+2 Below is your practical, observer‑friendly guide to which comets you can actually see in the sky in late November and through December 2025, plus a rundown of
24 November 2025
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Comet 3I/ATLAS Today (23 November 2025): New NASA MAVEN Results, Jupiter ‘Anomaly’ Claims and the Truth About Those Break‑Up Rumors

Comet 3I/ATLAS Today (23 November 2025): New NASA MAVEN Results, Jupiter ‘Anomaly’ Claims and the Truth About Those Break‑Up Rumors

Interstellar comet 3I/ATLAS continues to dominate space headlines this Sunday, 23 November 2025. New data from NASA’s Mars missions are sharpening our picture of what this visitor is made of, while a fresh claim of an “extraordinary anomaly” in its path toward Jupiter is reigniting the alien‑probe debate. At the same time, astronomers are busy debunking online rumors that the comet has broken apart. Key updates on Comet 3I/ATLAS – 23 November 2025 What is 3I/ATLAS and where is it now? 3I/ATLAS is the third confirmed interstellar object ever found, after 1I/ʻOumuamua (2017) and 2I/Borisov (2019). It was discovered on
23 November 2025
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NASA Reveals New 2025 Images of Interstellar Comet 3I/ATLAS, Debunking Alien Rumors

NASA Reveals New 2025 Images of Interstellar Comet 3I/ATLAS, Debunking Alien Rumors

November 20, 2025 NASA has unveiled a spectacular new collection of images and data of interstellar comet 3I/ATLAS, the third known visitor from beyond our solar system, while firmly dismissing online speculation that the object might be an alien spacecraft. The release pulls together observations from an unprecedented network of spacecraft around Mars, near the Sun, and deep in space, along with some of the world’s most powerful telescopes. NASA Science+2NASA Science+2 What is Comet 3I/ATLAS and Why Is It Special? Comet 3I/ATLAS (also designated C/2025 N1 ATLAS) is only the third confirmed interstellar object ever observed passing through our solar system, following 1I/ʻOumuamua in
20 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

Comet 3I/ATLAS Today: NASA’s Big Image Reveal, ISRO’s New Data and How to Follow the Interstellar Visitor (Nov. 19, 2025)

On Wednesday, November 19, 2025, the interstellar comet 3I/ATLAS is center stage: NASA is set to unveil its sharpest images yet of this rare object, while ISRO scientists in India share fresh observations from their Mount Abu telescope. Here’s everything you need to know today about what’s happening, why it matters, and how to watch. India Today+3Reuters+3NASA+3 Today’s Big 3I/ATLAS Headlines (Nov. 19, 2025) NASA’s live reveal at 3 p.m. ET NASA is holding a live media event at 3 p.m. Eastern Time today from Goddard Space Flight Center in Greenbelt, Maryland, to unveil new imagery of 3I/ATLAS collected by multiple space- and ground-based observatories. NASA+2NASA
19 November 2025
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Stock Market Today

Wesfarmers share price: what to watch on ASX next week as results loom

Wesfarmers share price: what to watch on ASX next week as results loom

7 February 2026
Wesfarmers shares closed down 1.33% at A$85.04 on Friday, following a sharp drop in the S&P/ASX 200, which fell 2% for its steepest one-day loss in 10 months. Investors are watching for Australia’s household spending data next week and Wesfarmers’ half-year results due Feb. 19.
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