This week: a seminar/conference on the returned samples from Ryugu and Bennu, and their implications: https://www.hou.usra.edu/meetings/bennuryugu2025/ Bennu and Ryugu: Samples from the Early Solar System WorkshopOctober 7–9, Lunar and Planetary Institute, Houston On the (very rich) agenda (www.hou.usra.edu/meetings/bennuryugu2025/technical_program/): Tuesday, October… Read More »Bennu and Ryugu Samples Workshop
In the current (4 Oct) issue of New Scientist: www.newscientist.com/article/2498319-nasas-asteroid-deflection-test-had-unexpected-and-puzzling-outcome/Alex Wilkins 1 October 2025 NASA’s asteroid deflection test had unexpected and puzzling outcome As one might expect from New Scientist, this is an accessible take on a scientific work. The… Read More »Dimorphos Debris Motion
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
Icarus for November (vol. 440) is a bit light: Pan, Q. Li, X. Qiao, D. Analysis of structural failure in fast-spinning small bodies Art 116662 .2025.116662Wei, Z. Zhuang, Y. Zhang, H. et al. Spectral feature variations of low-iron olivine under… Read More »Note, Paper: Grasping the Clasts
Briefly: I post on the PUNCH mission, since Sungrazing comets are relevant (including ‘comets’- asteroids passing so close to the Sun that rock vaporizes and emits). Now, PUNCH is relevant for (barely) tracking 3I/ATLAS as it starts going behind the Sun… Read More »PUNCH Catches ATLAS Passage
The Sep issue (vol. 701) of Astronomy & Astrophysics still says “in progress”, but I’m going ahead: Minker, K. Carry, B. Vachier, F. et al. A dynamical dichotomy in large binary asteroids A42 202554973Hmiddouch, S. Jehin, E. Lippi, M. et… Read More »Note, Paper: Dynam-Activity
Time for the Oct. Astronomical Journal (vol. 170 #4): Wang, B. Duan, X. Huang, F. et al. Simulation Analysis of Kinetic Impact Effects on Near-Earth Asteroid Defense Mission Using Precise Orbit Determination 224 adfc5cIngebretsen, C. Bolin, B. T. Jedicke, R. Apache… Read More »Note, Paper: Impact Track/Facts
Next week: a conference hosted by NOIRLab (National Optical/InfraRed Lab) on our star system… and others: THE SOLAR SYSTEM IN CONTEXT noirlab.edu/science/events/websites/solar-system-in-context-2025 We are happy to announce the 2025 NOIRLab Science Conference: The Solar System in Context, which will take… Read More »Solar System In Context Meeting
Briefly: The Astronomer’s Telegram posts quick, short, straightforward notices… like telegrams! ATel#17416 www.astronomerstelegram.org/?read=17416Farnham, T. L. Feaga, L. M. Ye, Q. et al. Observations of an Asymmetric CN Coma in Interstellar Comet 3I/ATLAS 23 Sep 2025; 19:02 UT Cyanide and cyano-compounds… Read More »3I Cyan-Active ATLAS
I want to quickly cover the Geochimica et Cosmochimica Acta for 15 Sep (vol. 405): Nakashima, D. Friedrich, J. M. Ott, U. Initial 244Pu/238U ratios and seach for presolar SiC in Ca-Al-rich inclusions from CV3 chondrite using noble gas and… Read More »Note, Paper: Isotope Exo-Motes