It’s MetSoc time, though slightly early for 2025- the meeting is in the Southern Hemisphere this year, Perth AU. No, I am not flying there. I’ll just have to content myself online. https://www.hou.usra.edu/meetings/metsoc2025/technical_program/Monday, July 14, 2025 Day one, and what… Read More »Meteoritical Society Meeting 2025, Day 1
2024 YR4 aside (no, it will NOT kill you), we should give asteroids their proper due. Asteroids are clues left over from the early Solar System, and contain presolar grains (crystals that predate the Sun and planets). Asteroids (the NEOs-… Read More »Happy Asteroid Day!
There’s a mid-month issue of Icarus, so let’s get caught up. In vol. 435 (15 July 2025): Shou, Y. Combi, M. Feaga, L. et al. Surface activity of H2O and CO2 on comet 103P/Hartley2 derived from EPOXI/HRI images Article 116557 … Read More »Note, Paper: Spray Papers
Here’s something different. In American Mineralogist (vol. 110): Tomioka, N. Kurosawa, K. Miyake, A. et al. Progressive change in dislocation microstructures in shocked calcite with pressure: Characterization of micrometeoroid bombardment on asteroid Ryugu p. 945 am-2024-9540 Experimental astronomy again. As… Read More »Note, Paper: To Shoot Ryugu
Beresheet crashed.Vikram crashed.Hakuto-R crashed.Luna-25 crashed.Peregrine crashed.Resilience crashed. Hayabusa bounced. It then continued its mission, and… returned to Earth. Almost 20 years ago. The gravity of Earth’s natural satellite is one-sixth Earth’s gravity… and that of Ceres, the largest asteroid, is… Read More »“Low Gravity” Indeed
Time for another batch of papers from Planetary Science Journal (still vol. 6): Schang, K. Dove, A. Effects of Particle Shape and Size on Granular Mechanics in Vacuum and Microgravity Environments 88 adbgebÄtuk, M. Two Possible Orbital Histories of… Read More »Note, Paper: Mote Papers
The three issues of MNRAS (Monthly Notices of the Royal Astronomical Society) for May are now out: Volume 539, Issue 1 May 2025Ali-Dib, M. Walton, C. Protoplanetary cores drove chondrule formation P. 127 staf505Anslow, R. J. Bonsor, A. Todd, Z.… Read More »Note, Paper: Bits about Bits
…see Day 1, Day 2, Day 3, Day 4 It’s now Day 5 of a weeklong conference: wrapping up loose ends. Here, the less technical but no less important soft sciences. And posters; lots and lots of posters. Panel Session… Read More »2025 Planetary Defense Conference, Day 5
…see Day 1, Day 2, Day 3 And now on Day 4 of the PDC, we get to the dramatic, unlikely (and hopefully never likely in our era) part of planetary defense: mitigation. That’s action taken when the impactor has… Read More »2025 Planetary Defense Conference, Day 4
…see Day 1, Day 2 Now, in Day 3, we get into the telescopes (and one antenna) for both detection and tracking: Session 4: Near-Earth Object (NEO) DiscoveryThe Pan-STARRS Search for Near-Earth Objects: 10+ Years old and going strong… Read More »2025 Planetary Defense Conference, Day 3