Dave Jewitt is an astronomer at the University of Hawaii's Institute
for Astronomy.  He is interested in the primitive bodies of the solar
system, especially comets and Kuiper belt objects (which he
discovered), as this relates to properties of the protoplanetary disk.
He is also involved in research on dust disks around young stars, ice
physics, small outer planet satellites, and the main belt comets Main
Belt Comets.  Jewitt is a member of the National Academy of Sciences.