3. What makes comet differ from an asteroid as to chemical composition? a. comet is a rocky fragment while asteroid is an icy object b. comet is an icy object while asteroid is a rocky fragment. c. both comets and asteroids are icy bodies. d. both comets and asteroids are rocky fragments.
Asteroids come in various shapes and sizes. They tend to be rockier than comets. In contrast to asteroids, most comets come from beyond the orbit of Pluto, in a region of the solar system called the Oort Cloud. ... Because they formed in the deep freeze of the outer solar system, comets are icier than asteroids.
