Our group seeks to understand the origin of the Solar System in the broader context of the local Galaxy through analyses of extraterrestrial materials (rocks and dust from asteroids and comets, circumstellar and interstellar grains, and samples of the solar wind).

We are a part of the Physics Department and the McDonnell Center for the Space Sciences at Washington University in St. Louis, and collaborate closely with the Department of Earth and Planetary Sciences.

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Cosmic Symplectite

Lionel is measuring cosmic symplectite (COS) in our NanoSIMS. This is very exciting for us as COS is one of the most interesting mineral assemblages ever discovered. It’s tiny and rare but holds clues about comets, the outer Solar System, and the transport of water in planetary systems.