Comets News 2 December 2025 - 8 December 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 right now about 3I/ATLAS, and why this visitor from another star system matters. What is Comet 3I/ATLAS? 3I/ATLAS is the third confirmed interstellar object ever seen in our Solar System, after 1I/ʻOumuamua (2017) and 2I/Borisov (2019).Wikipedia+1 Key facts: Crucially, the comet will not

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 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 At the same time, speculative claims that 3I/ATLAS might be an

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 Hubble photos, a surprise “teaser” image from ESA’s Juice spacecraft and new reports of vigorous activity around the comet are converging just as 3I/ATLAS heads toward its closest approach to Earth later this month, offering scientists and skilled amateur astronomers

Published: December 3, 2025 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. In the last 48 hours alone, new research and images have revealed: All of this is happening as 3I/ATLAS climbs back into the pre‑dawn sky after whipping around the Sun in late October and heading toward its closest approach to Earth on December 19, 2025, at a safe distance of about 170 million miles (270 million km). EarthSky+1 Here’s what you need to know today about this once‑in‑a‑lifetime interstellar visitor. What Is Interstellar Comet 3I/ATLAS?