dust disk A disk of material, rich in grains of cosmic dust and possibly larger objects, that is in orbit around a star. Dust disks include protoplanetary disks and regenerated disks. Related category STELLAR ASTROPHYSICS Archived news Dusty debris may be asteroid belt (Apr 21, 2005) Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |