[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.

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.

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.

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...

A dress rehearsal for a moon landing will test the space agency's mettle.

The composition links the rare interstellar visitor to icy bodies beyond Neptune, hinting at shared planet-building materials across star systems.

YouTube video by The Why Files

November 2026 night sky: Mars and Jupiter 1.2 degrees apart on the 16th, Leonids that nearly triple by dawn on the 18th. See our hour-by-hour count.

El enigmático cometa interestelar 3I/ATLAS acaba de sumar una nueva anomalía a su creciente lista de peculiaridades. Un estudio realizado con el telescopio espacial James Webb ha descubierto una propo...

JWST Reveals Refractory-rich Water Ice in Interstellar Comet 3I/ATLAS: Evidence for a Continuum of Grain Properties across Protoplanetary Disks, Protopapa, Silvia, Kelley, Michael S. P., Cordiner, Martin A., Milam, Stefanie N., Bodewits, Dennis, Charnley, Steven B., Drozdovskaya, Maria N., Faggi, Sara, Farnocchia, Davide, Guilbert-Lepoutre, Aurélie, Micheli, Marco, Roth, Nathan X., Schwamb, Megan E., Seligman, Darryl Z., Villanueva, Geronimo L.

interstellar comets provide invaluable insights into the chemical compositions of planetary systems outside of our Solar System.

Astrophysical observations of the interstellar object 3I Atlas using the Hobby-Eberly Telescope and its VIRUS spectrograph revealed unusually strong gaseous iron, nickel, and deuterium signatures that conflict with standard models of comet chemistry and early-universe metallicity. The Angry Astronaut uses these anomalies to argue that conventional comet explanations are inadequate and advances speculative interpretations of 3I Atlas as an engineered interstellar vehicle or ancient alien probe.

The Angry Astronaut argues that the widely reported 2026 fireball ‘outbreak’ has not subsided, citing a cluster of slow-moving, emerald-green bolides, powerful sonic booms, and anomalous atmospheric events over the central United States. He links these incidents to historical green fireball investigations near U.S. nuclear sites and to recent scientific findings about the interstellar object 3I Atlas, suggesting that conventional meteor explanations do not fit the available data.