Yanqin Wu (Chinese: 武延庆) is a theoretical astrophysicist whose research concerns planet formation, protoplanetary disks, the effects on planets of photoevaporation, orbital resonance, and planetary migration, and the classification and distribution of exoplanets.[1][2] She has theorized that planetary collisions have culled initially-crowded systems until what remains is often on the edge of chaos,[3] and used oscillations in the rings of Saturn to study the past history of the Solar System.[4] Educated in China and the US, she has worked in England and Canada, where she is a professor in the Department of Astronomy & Astrophysics of the University of Toronto.
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