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Comets News 18 December 2025 - 25 December 2025

Comet 3I/ATLAS Today (Dec. 25, 2025): What’s New After the Flyby, What NASA and ESA Just Saw, and Why It Matters

Comet 3I/ATLAS Today (Dec. 25, 2025): What’s New After the Flyby, What NASA and ESA Just Saw, and Why It Matters

December 25, 2025 marks the strange, quiet “afterglow” phase of Comet 3I/ATLAS—the third confirmed interstellar object ever found passing through our solar system. The comet’s closest approach to Earth is already behind us (it passed at a safe distance), but the science story is still unfolding fast: Breakthrough Listen has now reported results from an ultra-sensitive “are you broadcasting?” radio search, while NASA and ESA continue to publish spacecraft observations that help pin down what this visitor is actually made of—and how it behaves when the Sun starts cooking it. SETI Institute The quick recap: what is 3I/ATLAS, and why
25 December 2025
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Comet 3I/ATLAS Today: December 24, 2025 Updates on the Interstellar Visitor

Comet 3I/ATLAS Today: December 24, 2025 Updates on the Interstellar Visitor

December 24, 2025 — Comet 3I/ATLAS (also cataloged as C/2025 N1 (ATLAS)) is already past its closest point to Earth, fading and drifting outward again — but the science and the headlines are accelerating, not slowing down. Today’s developments include a newly released Breakthrough Listen radio search that reports no sign of artificial transmissions, fresh discussion about the comet’s cyanide chemistry, and continued analysis of the comet’s rare sunward-facing “anti-tail” and wobbling jet behavior. NASA Science+3arXiv+3The Economic Times+3 Where is Comet 3I/ATLAS today? As of December 24, 2025, ephemeris trackers place 3I/ATLAS at roughly 1.81 AU from Earth and 2.44
24 December 2025
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Comet 3I/ATLAS Today (Dec. 23, 2025): New Spacecraft Data, X‑Rays, “Radio Signals,” and the Next Big Test at Jupiter

Comet 3I/ATLAS Today (Dec. 23, 2025): New Spacecraft Data, X‑Rays, “Radio Signals,” and the Next Big Test at Jupiter

December 23, 2025 — Comet 3I/ATLAS, the third confirmed interstellar object ever seen passing through our solar system, is already on its way out. But the news cycle around it is still very much inbound. In the days following 3I/ATLAS’ closest approach to Earth on Dec. 19, 2025, space agencies and research teams have been stitching together an unusually rich, multiwavelength “biography” of this visitor from another star system: NASA says it’s a normal (if rare) active comet, while ESA and Japan’s XRISM mission have revealed something never conclusively seen in an interstellar comet before—an X‑ray glow produced as the
23 December 2025
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Comet 3I/ATLAS Today (22 December 2025): The Latest Science, Spacecraft Views, and “Radio Signal” Reality Check

Comet 3I/ATLAS Today (22 December 2025): The Latest Science, Spacecraft Views, and “Radio Signal” Reality Check

As of 22.12.2025, the interstellar comet 3I/ATLAS—only the third confirmed object from beyond our solar system—is already on its way out again. Its closest pass by Earth happened just days ago, and while the comet never came anywhere near “close” in a human sense, the flyby has triggered a wave of fresh data releases, rapid-response observations, and (inevitably) some internet-fueled mythology. Here’s what’s new right now: what scientists have actually seen, what they haven’t seen, and what comes next as 3I/ATLAS heads toward the outer solar system. NASA Science+1 The big headline today: 3I/ATLAS is leaving—but the best data is
22 December 2025
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Comet 3I/ATLAS Today: Latest Updates, Science Highlights, and the Week-Ahead Skywatching Forecast (Dec. 21–28, 2025)

Comet 3I/ATLAS Today: Latest Updates, Science Highlights, and the Week-Ahead Skywatching Forecast (Dec. 21–28, 2025)

On Sunday, December 21, 2025, the interstellar comet 3I/ATLAS is already on the “goodbye” leg of its once-in-a-lifetime pass through our solar system—two days after its closest approach to Earth. The comet is still observable with amateur gear, but it’s fading night by night as it retreats outward, while scientists race to squeeze out every last clue about what formed around another star. AP News+2NASA Science+2 This week-ahead report pulls together the key news, observing forecasts, and scientific analyses available as of Dec. 21, 2025, including new space-telescope results (X-rays!), radio searches, and NASA mission updates—plus what to expect in
21 December 2025
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Night Sky Today (Dec. 20, 2025): New Moon Darkness, Jupiter All Night, Ursid Meteors Next, and Interstellar Comet 3I/ATLAS

Night Sky Today (Dec. 20, 2025): New Moon Darkness, Jupiter All Night, Ursid Meteors Next, and Interstellar Comet 3I/ATLAS

Saturday, December 20, 2025 brings one of the most skywatcher-friendly setups of the year: a New Moon has wiped out moonlight, Jupiter is blazing in the evening sky and staying up late, the Ursid meteor shower is building toward its peak, and an interstellar comet—3I/ATLAS—is still within reach of backyard telescopes just after its closest pass by Earth. AP News+4EarthSky+4Scientific American+4 If you’ve been waiting for a “go night” to step outside, let your eyes adjust, and simply follow bright signposts across the sky, tonight is it. New Moon Night: The Dark-Sky Advantage Peaks Now The Moon reaches New Moon
20 December 2025
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Comet 3I/ATLAS Today (Dec. 20, 2025): Europa Clipper’s UV Surprise, Parker Solar Probe Images, and the Latest Forecast

Comet 3I/ATLAS Today (Dec. 20, 2025): Europa Clipper’s UV Surprise, Parker Solar Probe Images, and the Latest Forecast

December 20, 2025 — The rare interstellar visitor known as Comet 3I/ATLAS is now past its closest approach to Earth and heading back out toward the outer solar system. But “past” doesn’t mean “gone.” Today’s updates include a new research release describing ultraviolet measurements from NASA’s Europa Clipper that captured the comet when Earth- and Mars-based observers had limited views, plus fresh details on how NASA’s Parker Solar Probe tracked the comet near the Sun—right through the glare that normally hides objects like this from ground-based telescopes. ScienceDaily+2NASA Science+2 For skywatchers, 3I/ATLAS remains a telescope target rather than a naked-eye
20 December 2025
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Night Sky Tonight (December 19, 2025): How to See Interstellar Comet 3I/ATLAS, Catch New Moon Darkness, and Get Ready for the Ursid Meteor Shower

Night Sky Tonight (December 19, 2025): How to See Interstellar Comet 3I/ATLAS, Catch New Moon Darkness, and Get Ready for the Ursid Meteor Shower

Friday, December 19, 2025 brings a rare “headline night” for skywatchers: an interstellar comet is making its closest pass by Earth, the Moon is slipping into (or extremely near) a New Moon phase that darkens the sky, and the year’s final major meteor shower is ramping up ahead of its peak just before Christmas. If you only step outside once this week, tonight is a strong candidate—especially if you have access to binoculars or a telescope and a spot away from city lights. The big sky story today: Interstellar comet 3I/ATLAS makes its closest approach The most talked-about celestial visitor
19 December 2025
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Comet 3I/ATLAS Today (Dec. 19, 2025): Closest Earth Flyby, New NASA/ESA Updates, and How to Watch Live

Comet 3I/ATLAS Today (Dec. 19, 2025): Closest Earth Flyby, New NASA/ESA Updates, and How to Watch Live

In the early hours of Friday, December 19, 2025, an icy visitor from beyond our Solar System swept through our cosmic neighborhood—not close enough to scare anyone, but close enough to thrill astronomers. Comet 3I/ATLAS (also known by its formal designation C/2025 N1 (ATLAS)) reached its closest point to Earth at about 1:00 a.m. EST (06:00 GMT)—still a vast ~1.8 astronomical units away, or roughly 168 million miles (270 million kilometers). Space+2NASA Science+2 That distance is nearly twice the average Earth–Sun separation, which is exactly why scientists keep repeating the same reassuring line: there is no impact risk. NASA Science+2European Space Agency+2 So why all the attention? Because 3I/ATLAS is only the
19 December 2025
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Comet 3I/ATLAS Today: Interstellar Visitor Nears Closest Approach to Earth — What’s Happening on Dec. 18, 2025 and How to Watch

Comet 3I/ATLAS Today: Interstellar Visitor Nears Closest Approach to Earth — What’s Happening on Dec. 18, 2025 and How to Watch

December 18, 2025 — The interstellar comet 3I/ATLAS (sometimes written as 3I/Atlas) is back in the spotlight today as it heads into a key milestone: its closest approach to Earth early Friday, Dec. 19. It won’t be a dramatic “near miss” in everyday terms—NASA emphasizes the comet will remain about 1.8 astronomical units away (roughly 170 million miles / 270 million kilometers, nearly twice the Earth–Sun distance)—but in astronomy, that’s close enough to trigger an all-hands observation push across telescopes and spacecraft. NASA Science Today’s coverage (Dec. 18) is dominated by two themes: how to watch the flyby in real time, and what scientists are learning from this rare visitor from another star system—only
18 December 2025
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Night Sky Tonight (Dec. 18, 2025): Watch Interstellar Comet 3I/ATLAS Live, Plus Moon–Mercury Dawn Pairing, Jupiter and Aurora Chances

Night Sky Tonight (Dec. 18, 2025): Watch Interstellar Comet 3I/ATLAS Live, Plus Moon–Mercury Dawn Pairing, Jupiter and Aurora Chances

Dec. 18, 2025 — If you’re planning to look up tonight, the sky has a rare mix of “big news” and easy wins. The headline event is an interstellar visitor—Comet 3I/ATLAS—making its closest pass by Earth (and getting a free livestream). Meanwhile, the Moon is down to a razor-thin crescent, setting up a pre-dawn scene with Mercury that’s short, low, and beautiful if you catch it on time. Add a bright Jupiter, a golden Saturn, and a minor geomagnetic storm forecast that could help aurora watchers at higher latitudes, and Dec. 18 becomes one of those winter nights worth bundling up for. Below is a practical, location-flexible guide
18 December 2025
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Interstellar Comet 3I/ATLAS Today: Latest Dec. 17, 2025 Updates Ahead of Its Dec. 19 Earth Flyby

Interstellar Comet 3I/ATLAS Today: Latest Dec. 17, 2025 Updates Ahead of Its Dec. 19 Earth Flyby

Two days before it reaches its closest point to Earth, interstellar comet 3I/ATLAS is giving astronomers and serious backyard skywatchers a rare, time-limited opportunity: observe a visitor that formed around another star, then wandered into our solar system on a one-way trip back to interstellar space. The flyby itself isn’t close in the everyday sense—NASA says 3I/ATLAS will remain about 1.8 astronomical unitsfrom Earth on Dec. 19, 2025 (roughly 170 million miles / 270 million kilometers, nearly twice the Earth–Sun distance). But for scientists, it’s still “close” enough to run intensive observation campaigns, compare measurements across many telescopes and spacecraft, and test new ways of tracking
18 December 2025
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Stock Market Today

Seagate (STX) stock jumps nearly 6% as Citi hikes target — what to watch next week

Seagate (STX) stock jumps nearly 6% as Citi hikes target — what to watch next week

7 February 2026
Seagate shares rose 5.9% to $429.32 Friday after Citigroup raised its price target to $480 and reiterated a buy rating. The gain ended a two-day slide but left the stock 6.6% below its Feb. 3 high. CEO Dave Mosley sold 20,000 shares on Feb. 2 under a pre-arranged plan, SEC filings show. U.S. jobs and inflation data next week are seen as key tests for tech stocks.
Cummins (CMI) stock price rebounds after earnings whipsaw as investors eye data-center power demand

Cummins (CMI) stock price rebounds after earnings whipsaw as investors eye data-center power demand

7 February 2026
Cummins shares jumped 6.8% to $577.73 Friday, recovering from a nearly 9% post-earnings drop the day before. The company reported Q4 revenue up 1% to $8.54 billion, took a $218 million charge tied to its hydrogen business, and guided for 2026 EBITDA of 17–18% of sales. Demand for data center generators offset weakness in North American truck markets. Analyst reaction was mixed; Truist raised its price target.
Corning stock hits first record close since 2000 as jobs, CPI data loom

Corning stock hits first record close since 2000 as jobs, CPI data loom

7 February 2026
Corning shares surged 8.3% to $122.16 Friday, their highest close since the dot-com era, after Meta agreed to buy up to $6 billion in fiber-optic cables. The stock is up 40% since late 2025, fueled by strong first-quarter guidance and AI data-center demand. Insiders sold shares following the rally, SEC filings show. Investors await next week’s U.S. jobs and inflation data for rate signals.
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