Comet dust is primitive and shows significant diversity. Our knowledge of the properties of
primitive cometary particles has expanded significantly through microscale investigations of …

Chondrule-like objects and Ca-Al-rich inclusions (CAIs) are discovered in the retuned
samples from asteroid Ryugu. Here we report results of oxygen isotope, mineralogical, and …

Chondrules are iconic sub-millimeter spheroids representing the most abundant high-
temperature dust formed during the evolution of the circumsolar disk. Chondrules have been …

Deciphering the spatial and temporal evolution of chondrules allows for a better
understanding of how asteroidal seeds formed, migrated, and eventually accreted into …

A quantitative understanding of the elemental and isotopic fractionations recorded in the
compositions of the chondritic meteorites would provide fundamental constraints for …

We present detailed electron microprobe analyses and oxygen three-isotope measurements
by high precision secondary ion mass spectrometry on 45 type I (FeO-poor) …

We report on the mineralogy, petrography, and in situ measured oxygen-and magnesium-
isotope compositions of eight porphyritic chondrules (seven FeO-poor and one FeO-rich) …

We have studied porphyritic olivine-rich chondrules of the carbonaceous chondrite Kaba
(CV3) by combined high-resolution X-ray mapping, quantitative electron microprobe …

The systematic isotopic difference between refractory inclusions and chondrules, particularly
for oxygen, has long indicated an isotopic evolution of the solar protoplanetary disk …

Chondrules, millimeter-sized igneous spherules comprising the major component of most
chondritic meteorites, formed during the first 4 million to 5 million years of the evolution of the …