Happy Samhain, All Saints Day, etc. to all who celebrate. Speaking of things coming from Europe, good Astronomy & Astrophysics for October (vol. 702): Santana-Ros, T. Ivanova, O. Mykhailova, S. et al. Temporal evolution of the third interstellar comet 3I/ATLAS:… Read More »Note, Paper: You Shed Some, You Accrete Some
Yesterday was Oct. 29, perihelion for 3I/ATLAS. That was the point in its trajectory (not orbit) when it was closest to the Sun. As the comet neared the Sun, it rose in temperature, and thus activity. That activity: Astrophysics >… Read More »3I Behind Prime Sky Light
In November 1’s issue (vol. 993 #1) of Astrophysical Journal Letters: Farnocchia, D. Vokrouhlicky, D. Santana-Ros, T. et al. Radiation Forces and Trajectory of Hayabusa2# Target 1998 KY26 L9 ae10b8Salazar Manzano, L. E. Lin, H-W. Taylor, A. G. et al.… Read More »Note, Paper: Non-Pusher
This week’s Science (23 Oct 2025, vol. 390, #6771) proudly features: Andy Lawrence, Interstellar visitors: Smoking and nonsmoking aec2085 Not only was this editorial commissioned by the title (the flagship title of the Science family), but it was blurbed prominently… Read More »Billions and Billions of… Not-Stars
Of late, in Planetary Science Journal (all vol.6): Salazar Manzano, L. E. Gerdes, D. W. Napier, K. J. et al. Prospects of a New L5 Trojan Flyby Target for the Lucy Mission 213 adf5c2Dorsey, R. C. Hopkins, M. J. Bannister,… Read More »Note, Paper: PSJ Particle Population Post
Our interstellar friend is behind the Sun (to observers on or near Earth). Good time to recap activity (emission of coma and tail(s)) so far: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2510.18769[Submitted on 21 Oct 2025]Jewitt, D. Luu, J. Pre-perihelion… Read More »First-Half ATLAS Activity Track
The “issues” of Monthly Notices of the Royal Astronomical Society (MNRAS) for October are up: volume 542, #4 – volume 543, #1Li, Z. Qiao, D. Li, X. Spatial temporary capture in the Sun–planet three-body system Pgs 625 staf1430 volume 543,… Read More »Note, Paper: Planetary Particles Aplenty
The characterization continues. With the trajectory well-determined over a long arc, we check and recheck spectral bands and lines (therefore, compositions): Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2510.02817[Submitted on 7 Oct 2025]Coulson, I. M. Kuan, Y-J. Charnley, S. B. JCMT… Read More »3I Cyanide Multi-Time Described
More spectral sleuthing attempted at ATLAS: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2509.26053[Submitted on 30 Sep 2025]Hutsemékers, D. Manfroid, J. Jehin, E. et al. Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS As I’ve mentioned before,… Read More »3I/ATLAS Flash-To-Gas Graphed
Today, in Space Science Reviews (vol. 221): Bannister, M., Pfalzner, S., Pearce, T. et al. The Origins & Reservoirs of Exocomets 90 s11214-025-01219-w Coming on the heels of the Solar System in Context meeting (noirlab.edu/science/events/websites/solar-system-in-context-2025), we have a ‘comets in… Read More »Space Science Reviews Exocomets