Another quick report on quick phenomenon, courtesy of Astronomers’ Telegram: www.astronomerstelegram.org/?read=17551Serra-Ricart, M. Licandro,J. Alarcon, M. R. Post-perihelion Sunward Tail Detected on Interstellar Comet 3I/ATLAS: A Geometric Projection of the Dust TailATel #17551; 19 Dec 2025; 11:54 UT Comets have not just one tail,… Read More »3I Kite-Like Sight Cite
The January Acta Astronautica was divided into Part A and B, don’t ask me why. Now, Part B (vol. 238, Jan 2026): Otsuki, M. Baba, M. Imada, T. et al. Exhaustive evaluation of microgravity landing dynamics for small body exploration Pg 1-12Ye,… Read More »Note, Paper: P-Defense, B
Delving into development and policy now: Astrophysics > Instrumentation and Methods for Astrophysics arxiv.org/abs/2512.14785[Submitted on 16 Dec 2025]de León, J. Pinilla-Alonso, N. Tanga, P. et al. Why the Northern Hemisphere Needs a 30-40m Telescope and the Science at Stake: from… Read More »Boreal Big-Bore Resource Implored
More comety goodness coming: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2512.12819[Submitted on 14 Dec 2025]Serra-Ricart, M. Licandro, J. Alarcon, M. R. Pre-perihelion detection of a wobbling high-latitude jet in the interstellar comet 3I/ATLAS One feature of comets is jetting- emission… Read More »Interstellar Jet Presented (ATLAS)
Condolences to family, friends, and coworkers of Yannick Mellier, top scientist for the Euclid mission: https://www.euclid-ec.org/yannick-mellier-1958-2025/Yannick Mellier, 1958-2025 It’s easy to forget these are not merely glass-and-carbon-fiber machines. These are the works of people, living, breathing people. It takes the… Read More »Sweeping the Heavens, Meeting the Heavens (Yannick Mellier)
Congratulations to the Vera Rubin Observatory staff, all around, for being named a runner-up for Science magazine’s Breakthrough of the Year, after the boom in renewable energy (i. e., Swanson’s Law): vol. 390 #6779, 18 DecScience’s 2025 Breakthrough of the… Read More »Vera Rubin Up Next For Uprate
Interesting presser from the University of Canterbury, a partner institution with the Vera Rubin Observatory: https://www.canterbury.ac.nz/news-and-events/news/2025/kiwi-team-lead–out-of-this-world–study-of-new-comet17 Dec 2025 Kiwi team lead ‘out of this world’ study of new comet A little human interest and behind-the-scenes for our field. Read about… Read More »ATLAS Staff And Handling
Yes, I know YouTube is a full-color sewer of mediocrity. Every so often, a reputable source puts up a reputable short. Here’s one that’s reputable, and not-so-short: https://www.youtube.com/watch?v=BgrD1bd_In4Dec 17, 2025 Deep Space Dialogues (Stefanie Milam) Planets, Asteroids, and Interstellar Interlopers, OH… Read More »JW Pub (Dubbed): 3I, YR4, etc.
Now posted by the European Southern Observatory (ESO): https://www.eso.org/public/announcements/ann25011/16 Dec 2025, New SOXS instrument ready to observe fleeting cosmic events The SOXS instrument– Son of X-Shooter- has been installed on the La Silla telescope in Chile, and has taken test… Read More »ESO SOXS Now On
Hot on the heels of the last apparent comet discovery: http://www.cbat.eps.harvard.edu/iau/cbet/005600/CBET005648.txt We have multiple reports of an object with a coma and/or tail- therefore indicating activity, therefore indicating a comet. Except this “comet” orbits, to the precision of our measurements… Read More »*NEW* : Main-Belt Comet P/2025 W4 (Pan-STARRS)