Meteorites and planet formation

RH Jones - Reviews in Mineralogy and Geochemistry, 2024 - pubs.geoscienceworld.org
Meteorites are a remarkable resource. They capture the imagination of people worldwide
with their spectacular entry through Earth's atmosphere as fireballs, and their exotic …

Endogenous CO2 ice mixture on the surface of Europa and no detection of plume activity

GL Villanueva, HB Hammel, SN Milam, S Faggi… - Science, 2023 - science.org
Jupiter's moon Europa has a subsurface ocean beneath an icy crust. Conditions within the
ocean are unknown, and it is unclear whether it is connected to the surface. We observed …

Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample

T Yokoyama, M Wadhwa, T Iizuka, V Rai, I Gautam… - Science …, 2023 - science.org
Studies of material returned from Cb asteroid Ryugu have revealed considerable
mineralogical and chemical heterogeneity, stemming primarily from brecciation and …

Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu

W Fujiya, N Kawasaki, K Nagashima, N Sakamoto… - Nature …, 2023 - nature.com
The Hayabusa2 spacecraft explored asteroid Ryugu and brought its surface materials to
Earth. Ryugu samples resemble Ivuna-type (CI) chondrites—the most chemically primitive …

Origin of isotopic diversity among carbonaceous chondrites

JL Hellmann, JM Schneider, E Wölfer… - The Astrophysical …, 2023 - iopscience.iop.org
Carbonaceous chondrites are some of the most primitive meteorites and derive from
planetesimals that formed a few million years after the beginning of the solar system. Here …

A history of mild shocks experienced by the regolith particles on hydrated asteroid Ryugu

N Tomioka, A Yamaguchi, M Ito, M Uesugi, N Imae… - Nature …, 2023 - nature.com
Micrometeorites, a possible major source of Earth's water, are thought to form from explosive
dispersal of hydrated chondritic materials during impact events on their parental asteroids …

[HTML][HTML] Early solar system chronology from short-lived chronometers

A Anand, K Mezger - Geochemistry, 2023 - Elsevier
Age constraints on early solar system processes and events can be derived from meteorites
and their components using different radioisotope systems. Due to the short time interval …

[HTML][HTML] Hayabusa 2 returned samples reveal a weak to null magnetic field during aqueous alteration of Ryugu's parent body

C Maurel, J Gattacceca, M Uehara - Earth and Planetary Science Letters, 2024 - Elsevier
The JAXA Hayabusa 2 mission returned 5.4 g of material from the C-type asteroid Ryugu.
The Mn-Cr ages of dolomite in the returned samples indicate that Ryugu's parent body …

Mineralogy and petrology of fine‐grained samples recovered from the asteroid (162173) Ryugu

T Noguchi, T Matsumoto, A Miyake… - … & Planetary Science, 2023 - Wiley Online Library
Samples returned from the carbonaceous asteroid (162173) Ryugu by the Hayabusa2
mission revealed that Ryugu is composed of materials consistent with CI chondrites and …

Evidence of both molecular cloud and fluid chemistry in Ryugu regolith

M Bose, RA Root, Y Guan, J Eaton, A Wittmann… - Science …, 2024 - science.org
The sulfur chemistry of (162173) Ryugu particles can be a powerful tracer of molecular cloud
chemistry and small body processes, but it has not been well explored. We report …