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 …

Nitrogen isotope compositions in sedimentary rocks (d 15 N sed) are routinely used for
reconstructing Cenozoic N-biogeochemical cycling and are also being increasingly applied …

Presented here are the observations and interpretations from a comprehensive analysis of
16 representative particles returned from the C-type asteroid Ryugu by the Hayabusa2 …

Direct links between carbonaceous chondrites and their parent bodies in the solar system
are rare. The Winchcombe meteorite is the most accurately recorded carbonaceous …

Asteroid shapes and hydration levels can serve as tracers of their history and origin. For
instance, the asteroids (162173) Ryugu and (101955) Bennu have an oblate spheroidal …

Extraterrestrial organic matter in meteorites potentially retains a unique record of synthesis
and chemical/thermal modification by parent body, nebular and even presolar processes. In …

We use the C/N ratio as a monitor of the delivery of key ingredients of life to nascent
terrestrial worlds. Total elemental C and N contents, and their ratio, are examined for the …

Most of the carbon in carbonaceous chondrites is organic material that displays structures as
diverse as kerogen-like macromolecules and simpler soluble compounds ranging from polar …

It is often acknowledged that the search for life on Mars might produce false positive results,
particularly via the detection of objects, patterns or substances that resemble the products of …

Determining the origin of water and the timing of its accretion within the inner solar system is
important for understanding the dynamics of planet formation. The timing of water accretion …