Titan is the only moon with a substantial atmosphere, the only other thick N2 atmosphere
besides Earth's, the site of extraordinarily complex atmospheric chemistry that far surpasses …

The relative proportion of the two isotopes of nitrogen, 14N and 15N, varies dramatically
across the Solar System, despite little variation on Earth. NASA's Genesis mission directly …

Asteroids and comets are the remnants of the swarm of planetesimals from which the
planets ultimately formed, and they retain records of processes that operated prior to and …

Isotopic ratios in comets provide keys for the understanding of the origin of cometary
material, and the physical and chemical conditions in the early Solar Nebula. We review …

Primitive objects like comets hold important information on the material that formed our solar
system. Several comets have been visited by spacecraft and many more have been …

The past decade has brought major improvements in large-scale asteroid discovery and
characterization, with over half a million known asteroids, more than 100,000 of which have …

This review addresses our current understanding of comets that venture close to the Sun,
and are hence exposed to much more extreme conditions than comets that are typically …

Nitrogen Fractionation in Protoplanetary Disks from the H13CN/HC15N Ratio - IOPscience
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Of the potential volatile sources for the terrestrial planets, the CI and CM carbonaceous
chondrites are closest to the planets' bulk H and N isotopic compositions. For the Earth, the …

The origin of Titan's nitrogen-rich atmosphere is thought to be ammonia ice, but this has not
yet been confirmed. Furthermore, it is uncertain whether the building blocks of Titan formed …