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Note, Paper: Cold Core Lore

In the latest Science Advances issue (1 Oct 2025, vol. 11, #40): Grewal, D. S. Zhang, Z. Manilal, V.  Protracted core formation and impact disruptions shaped the earliest outer Solar System planetesimals  adw1668 Most asteroids never melted; they then preserve the materials… Read More »Note, Paper: Cold Core Lore

Bennu and Ryugu Samples Workshop

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

Dimorphos Debris Motion

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

3I/ATLAS Flash-To-Gas Graphed

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

PUNCH Catches ATLAS Passage

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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

Space Science Reviews Exocomets

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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