All chondrites accreted∼ 3.5 wt.% C in their matrices, the bulk of which was in a
macromolecular solvent and acid insoluble organic material (IOM). Similar material to IOM is …

The CM chondrites are samples of primitive water-rich asteroids formed during the early
solar system. They record significant interaction between liquid water and silicate rock …

Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2
spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide …

The Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological
units plus a cataclastic matrix. The degree of aqueous alteration varies between intensely …

CM chondrites (CMs) are the most abundant group of carbonaceous chondrites. CMs
experienced varying degrees of secondary aqueous alteration and heating that modified or …

Chondrites are exhumed from their parent bodies by impacts, which at the same time can
result in heating and mechanical modification (compaction, deformation, fracturing, etc.) …

Unravelling the origin of organic compounds that were accreted into asteroids requires
better constraining the impact of asteroidal hydrothermal alteration on their isotopic …

Meteorites originating from primitive C-type asteroids are composed of materials from the
Sun's protoplanetary disk, including up to a few per cent organic carbon. In contrast, some …

We report a systematic oxygen isotopic survey of Ca-carbonates in nine different CM
chondrites characterized by different degrees of alteration, from the least altered known to …

Samples returned from the carbonaceous asteroid (162173) Ryugu by the Hayabusa2
mission revealed that Ryugu is composed of materials consistent with CI chondrites and …