Asteroid vs Comet

Asteroid 6478 Gault with tail

From active asteroids to dormant comets, rubble piles to remnant cores, main belt comets and manx comets to ambiguous interstellar objects, this article provides a brief overview of the smaller objects in our planetary zoo—the main differences and similarities between asteroids and comets. But if it's meteors you're looking for, read Meteoroids, Meteors and Meteorites. …