I am interested in answering basic questions about the origin and evolution of small bodies in the solar system.
These include:
- The origin of meteoroids — comets, asteroids or interstellar, and what proportion of each?
- The origin of meteorites — the asteroid belt, mostly, but where specifically?
- The physical structure of meteoroids — bulk density and "dustball" models, and what these say about their origin.
- The flux and interaction of larger meteoroids at Earth — meteorites and break-up in the atmosphere.
Research areas on this site
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Tagish Lake Meteorite
Fall, recovery, orbit and composition of a rare carbonaceous chondrite.
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Infrasound & Fireballs
Infrasonic observations of bolides and atmospheric explosions.
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Fireball Videos
Video records of bright fireballs and meteorite-dropping events.
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Satellite Bolide Data
U.S. Department of Defense satellite-detected bolide records.