Scientific Discoveries 12 November 2025 - 11 July 2026

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

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.edu

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 some internet-fueled mythology.

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.

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 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 it wasn’t born here. NASA Science+1

As of December 8, 2025, interstellar comet 3I/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.

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 detected the comet’s first “radio signal,” and new chemistry measurements reveal surprisingly large amounts of methanol and hydrogen cyanide, molecules tied to both the origins and the destruction of life. Live Science+3Live Science+3IFLScience+3

Interstellar comet 3I/ATLAS – also known as C/2025 N1 – 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

Interstellar comet 3I/ATLAS – only the third known visitor from another star system – is putting on one of the strangest shows astronomers have ever seen.

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

South Africa’s MeerKAT radio array has picked up the first confirmed radio signal from the interstellar comet 3I/ATLAS, a detection that strongly supports the object’s natural, cometary identity and undercuts recent “alien probe” speculation. The signal—two narrow features at 1665 and 1667 MHz—matches classic hydroxyl absorption produced when sunlight breaks apart water vapor outgassed from a warming comet. The Astronomer's Telegram

The interstellar comet 3I/ATLAS is putting on fresh science today. New images show its ion tail lengthening and sharpening as the object climbs back into our predawn sky after its late‑October swing around the Sun. Meanwhile, astronomers have confirmed the first radio detection from this visitor—evidence of ordinary comet chemistry rather than extraterrestrial tech. Here’s what’s new, why it matters, and how to spot it. Space+1