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Scientific Discoveries News 4 December 2025 - 4 January 2026

SOHO spots water gushing from interstellar comet 3I/ATLAS after its Sun pass

SOHO spots water gushing from interstellar comet 3I/ATLAS after its Sun pass

NEW YORK, January 4, 2026, 17:01 ET Scientists have measured water streaming from interstellar comet 3I/ATLAS after its late-October pass around the Sun, using a solar-monitoring spacecraft to estimate how fast the object was shedding ice into space.  Phys The timing matters because most early work on 3I/ATLAS focused on its approach, when sunlight was ramping up the comet’s activity.…
Interstellar comet 3I/ATLAS spills its secrets as scientists clock its water loss and radio silence

Interstellar comet 3I/ATLAS spills its secrets as scientists clock its water loss and radio silence

NEW YORK, January 2, 2026, 12:50 ET Astronomers have measured water streaming from interstellar comet 3I/ATLAS after it passed closest to the Sun, using ultraviolet observations that track hydrogen released as water breaks apart, a report published on Friday said. Phys The finding matters because 3I/ATLAS is only the third confirmed object known to have entered the solar system from…
Hubble’s new 3I/ATLAS data show twin jets as rare interstellar comet fades

Hubble’s new 3I/ATLAS data show twin jets as rare interstellar comet fades

NEW YORK, December 29, 2025, 06:44 ET NASA’s Hubble Space Telescope has carried out a new observation of interstellar comet 3I/ATLAS, with the Space Telescope Science Institute’s status report showing a Dec. 27 visit now archived. (STScI visit status report) stsci.edu The update comes as 3I/ATLAS fades rapidly from view after swinging past Earth this month, while continuing on an outbound…
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…
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…
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…
Interstellar Comet 3I/ATLAS Nears Closest Earth Flyby on Dec. 19: New X‑ray Views, UN Tracking, and What Scientists Know Now

Interstellar Comet 3I/ATLAS Nears Closest Earth Flyby on Dec. 19: New X‑ray Views, UN Tracking, and What Scientists Know Now

December 15, 2025 — A rare visitor from beyond our solar system is making its final, headline-worthy sweep through the inner neighborhood — and the countdown to its closest pass by Earth is nearly over. Interstellar comet 3I/ATLAS (also designated C/2025 N1 (ATLAS)) will reach its closest approach to Earth on Friday, December 19, 2025, staying a safe ~1.8 astronomical units away — about 270 million kilometers (167–170…
Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

On December 13, 2025, Comet 3I/ATLAS—the third confirmed interstellar object ever found crossing our solar system—is back in the headlines as astronomers release fresh observations that deepen the mystery (and the science) of this rare cosmic flyby. It’s not just “another comet”: 3I/ATLAS is an outsider from beyond the Sun’s gravitational family, racing through on a hyperbolic path that proves…
NASA’s Interstellar Comet 3I/ATLAS: New Images, Life’s Ingredients and What Comes Next After the December Flyby

NASA’s Interstellar Comet 3I/ATLAS: New Images, Life’s Ingredients and What Comes Next After the December Flyby

As of December 10, 2025, NASA and partner observatories are racing to squeeze every last photon out of interstellar comet 3I/ATLAS — a green-glowing, ice‑volcano‑blasting visitor loaded with the chemical “ingredients for life.” Here’s the latest on what we’ve learned and what to watch in the days ahead. What is 3I/ATLAS, and why is it such a big deal? 3I/ATLAS…
Interstellar Comet 3I/ATLAS: Ice Volcanoes, Life’s Building Blocks and the December 19 Flyby — Latest Updates as of December 8, 2025

Interstellar Comet 3I/ATLAS: Ice Volcanoes, Life’s Building Blocks and the December 19 Flyby — Latest Updates as of December 8, 2025

As of December 8, 2025, interstellar comet 3I/ATLAS (also known as C/2025 N1 (ATLAS)) has gone from an obscure discovery to a global headline-maker. New observations are revealing cryovolcano‑like eruptions, an atmosphere rich in prebiotic molecules, and spectacular images from NASA and ESA ahead of its December 19 close approach to Earth— all while fringe claims about aliens and “electromagnetic sickness” swirl online. Here’s a clear, evidence-based look at what we actually know…
Interstellar Comet 3I/ATLAS Lights Up December Skies: New Images, ‘Ice Volcanoes’ and Life‑Linked Molecules

Interstellar Comet 3I/ATLAS Lights Up December Skies: New Images, ‘Ice Volcanoes’ and Life‑Linked Molecules

Published December 7, 2025 Interstellar comet 3I/ATLAS – only the third confirmed visitor ever seen passing through our Solar System from another star – is putting on its biggest show yet this December. As it brightens again after looping behind the Sun, astronomers are releasing a flood of new results: Hubble and ESA’s Juice spacecraft have snapped fresh images, radio telescopes have…
Interstellar Comet 3I/ATLAS: December 2025 Close Approach, New Hubble Images and ‘Ice Volcano’ Surprises

Interstellar Comet 3I/ATLAS: December 2025 Close Approach, New Hubble Images and ‘Ice Volcano’ Surprises

Interstellar comet 3I/ATLAS – also known as C/2025 N1 (ATLAS) – has just become the most closely watched visitor in the night sky. On 4 December 2025, a wave of new observations and images from NASA and ESA revealed that this third-known interstellar object is far more active and scientifically intriguing than astronomers first expected. NASA Science+2European Space Agency+2 Fresh…
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