The findings are another clue towards understanding the origins of 3I/ATLAS and the planet-forming conditions around other stars.

Exiled interstellar visitors like comet 3I/ATLAS are time capsules from the cosmos at large, yeeted from their exosolar homes by an unknown cataclysm and forced to drift through lonely space for billi...

New Webb data: 3I/ATLAS methane holds 13 times the deuterium of comet 67P, past every disk model. See our rebuilt ratio and where the age comes from.

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A Southwest Research Institute-led study used JWST to examine ice grains streaming from interstellar comet 3I/ATLAS

Exiled interstellar visitors like comet 3I/ATLAS are time capsules from the cosmos at large, yeeted from their exosolar homes by an unknown cataclysm and forced to drift through lonely space for billi...

The Angry Astronaut reviews new peer‑reviewed analyses of interstellar object 3I Atlas that report persistent non‑gravitational acceleration, anomalous chemistry, and minimal mass loss inconsistent with standard cometary physics. He contrasts these findings with Harvard astronomer Avi Loeb’s recent shift toward debunking UAP videos while serving as chair of a classified UAP science advisory council to U.S. national security agencies.

YouTube video by The Angry Astronaut

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Hot take: interstellar comet 3I ATLAS how to observe it through your scope

Interstellar comet 3I/ATLAS may contain material over 10 billion years old. Analysis of its methane ...

Hot take: interstellar comet 3I ATLAS how to observe it through your scope

[astro-ph.EP] We present 14 optical imaging and eight optical spectroscopic epochs of interstellar comet 3I/ATLAS from Keck/LRIS and Gemini/GMOS, two near-infrared (NIR) imaging epochs from Keck/MOSFI...

We present JWST/MIRI Low Resolution Spectroscopy (LRS) of 3I/ATLAS obtained post-perihelion at a heliocentric distance of 2.21 au.

A Southwest Research Institute–led study used NASA's James Webb Space Telescope to examine ice grains streaming from interstellar comet 3I/ATLAS, just the third object from beyond our solar system eve...

Thirteen times. That is how much the deuterium proportion in 3I/ATLAS's methane exceeds that of comet 67P/Churyumov-Gerasimenko, the only comet in our own system with a "secure" measurement of this k...

The interstellar comet 3I/ATLAS carries a chemical clue to conditions in the planetary system of its origin, locked away long before it reached our sun.

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Using the James Webb Space Telescope (JWST), scientists have found that the interstellar comet 3I/ATLAS was built from tiny grains of ice mixed with dust that are quite different from the solar system’s comets. These ice grains do, however, bear striking similarities to some icy bodies located at the edge of the solar system, beyond the orbit of Neptune, so-called trans-Neptunian objects (TNOs). 3I/ATLAS was discovered entering the solar system in the summer of 2025. It was only the third object found entering the solar system from farther afield in the Milky Way after 1I/'Oumuamua, seen in 2017, and 2I/Borisov, detected in 2019. This meant the interstellar comet offered a rare chance to glimpse the conditions under which such bodies form in other star systems. Thus, the JWST was quickly on the trail of 3I/ATLAS. "We designed [JWST] to be ready the moment an active interstellar comet was found and to follow it over time," Martin Cordiner of NASA’s Goddard Space Flight Center and the Catholic University of America said in a statement. Cordiner leads the JWST program to study objects such as 3I/ATLAS, and he is a co-author on a new research paper describing some of the findings. The...

De James Webb-ruimtetelescoop vindt aanwijzingen dat de interstellaire komeet 3I/ATLAS stofrijke ijsdeeltjes bevat.