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
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
Before the month is out… MNRAS: Letters for September (vol. 542 #1) has one good letter: Zhu, K. Dai, B. Cao, X. et al. O–Fe–Ti isotopic evidence for classifying Oued Chebeika 002 as a CI chondrite and its genetic affinities with… Read More »Note, Paper: Meteo-Ry? Carbennutious?
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
The latest “issue” (all-digital) of Geochemical Perspectives Letters includes (17 Sep 2025- vol. 37): Wölfer, E. Hellmann, J. Burkhardt, C. et al. Ge, Te, and Zn isotopic link between Ryugu and CI chondrites P. 1 geochemlet.2537 A brief examination of… Read More »Note, Paper: Mod Vol Balls and Falls
September’s Meteoritics & Planetary Science (vol. 60 #9) is now up, plus a supplemental issue: Lee, M. R. Salge, T. Maclaren, I. Magnesium phosphate in the Cold Bokkeveld (CM2) carbonaceous chondrite P. 2017 maps.70018Vacher, L. G. Phan, V. T. H.… Read More »Note, Paper: Phos-Fact Post
The issue of Earth and Planetary Science Letters for 15 Oct (vol. 668) includes: Nakahashi, T. Miyahara, M. Yamaguchi, A. Experimental constrants on the shock history of CI chondrites and Ryugu grains Art 119559 .2025.119559 Shock manifests itself as crystal defects.… Read More »Note, Paper: Impact Crack Tracking
I forgot the mid-2025 Extraterrestrial Materials Analysis Group meeting is this whole week, but then again so did a lot of people. With all the upheaval- in policy and in ways and means- going on this year, the “May” meeting… Read More »“Spring” 2025 ExMAG Meeting
No less than Nature Astronomy has just published (17 September 2025): Egal, A. Vida, D. Colas, F. et al. Catastrophic disruption of asteroid 2023 CX1 and implications for planetary defence s41550-025-02659-8 Asteroid 2023 CX1 was discovered in- yes, 2023- and… Read More »Note, Paper: Nut Dropper
The “issue” of Monthly Notices of the Royal Astronomical Society for September is posted. In it: Volume 542, Issue 1Kleshchonok, V. Sierks, H. Güttler, C. Inner coma of comet 67P/Churyumov–Gerasimenko during increased activity at perihelion on 2015 August 22–23 Pgs… Read More »Note, Paper: Part Departed, or Hardly?