Results 61 to 70 of about 5,656 (205)
Thermal History of CBb Chondrules and Cooling Rate Distributions of Ejecta Plumes [PDF]
Astrophysical Journal Letters, 2018 It has been proposed that some meteorites, CB and CH chondrites, contain material formed as a result of a protoplanetary collision during accretion.
R. Hewins +7 more
semanticscholar +1 more source
Drelów, the 13th and latest meteorite fall in Poland—A typical L6 chondrite with shock veins
Meteoritics &Planetary Science, EarlyView.Abstract On Tuesday, February 18, 2025, at 18:04:14 local time, residents of Poland observed a bright fireball registered by many Polish fireball stations belonging to the Skytinel Network established a few months before by Mateusz Żmija. Thus, the meteoroid's orbit, atmospheric trajectory, and the strewn field were calculated, and over 70 fragments ...
Addi Bischoff +18 more
wiley +1 more source
Small‐scale elemental abundance variations in Ryugu particles from touchdown 1
Meteoritics &Planetary Science, EarlyView.Abstract Ryugu materials closely resemble CI chondrites' mineralogical, chemical, and isotopic compositions; yet minor but resolvable differences in certain elemental abundances are evident. In this study, the bulk chemical compositions of eight individual Ryugu particles (1.5–4.3 mg) from the first touchdown site (TD1) were determined using triple ...
Karina López García +6 more
wiley +1 more source
How to form planetesimals from mm-sized chondrules and chondrule aggregates [PDF]
Astronomy & Astrophysics, 2015 The size distribution of asteroids and Kuiper belt objects in the solar system is difficult to reconcile with a bottom-up formation scenario due to the observed scarcity of objects smaller than $\sim$100 km in size. Instead, planetesimals appear to form top-down, with large $100-1000$ km bodies forming from the rapid gravitational collapse of dense ...
Daniel Carrera +2 more
openaire +2 more sources
Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman
Meteoritics &Planetary Science, EarlyView.Abstract A fireball camera system installed in 2022 by the Oman Meteorite Monitoring Project (OMMP) as part of the Global Fireball Observatory (GFO) recorded a 3.2 s fireball on March 8, 2022 at 8:15 p.m. UTC. A meteoroid of 4 ± 2 kg entered the atmosphere at 14.0 km/s.
Anna Zappatini +18 more
wiley +1 more source
The Astrophysical JournalReproduction experiments of radial pyroxene (RP) chondrules were carried out using an Ar–H _2 or Ar gas-jet levitation system in a reducing atmosphere in order to simulate chondrule formation in the protoplanetary disk.
Kana Watanabe +2 more
doaj +1 more source
New Zealand's Second Meteorite: Makarewa (find, L4, S5, W2)
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.One of the most remarkable discoveries of a meteorite in New Zealand was that of Makarewa. Discovered in 1879, Makarewa is a ‘find’ that was uncovered a metre below the surface of a clay bank during excavation works for a train line in the southern South Island.
Mia R. E. Boothroyd +3 more
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract Primitive asteroids and carbonaceous chondrites (CCs) record the history of processes in the early solar system. Visible and shortwave infrared (VSWIR) spectroscopy of primitive asteroids and bulk‐powdered CCs has identified shared spectral features suggestive of shared parent body origins.
S. A. Parra +2 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 300-316, February 2026.Abstract The Campo del Cielo iron meteorite (IAB‐MG) provides a unique window into early solar system processes, particularly the formation and evolution of carbon phases in non‐magmatic iron meteorites. In this study, we conducted a systematic nanostructural investigation of three distinct graphite occurrences—cliftonite (type I), interstitial ...
Xiao Tian Deng +8 more
wiley +1 more source
Iron Isotope Constraints on the Structure of the Early Solar System
The Astrophysical Journal Letters, 2023 The recent advent of nontraditional isotopic systems has revealed that meteorites display a fundamental isotopic dichotomy between noncarbonaceous (NC) and carbonaceous (C) groups, which represent material from the inner and outer solar system ...
Yves Marrocchi +2 more
doaj +1 more source