SOLAR SYSTEM

Detailed explanation-1: -Comets are often called “dirty snowballs", because they are made up of ice (both water and gas), dust, and organic molecules. As comets travel in their orbits around the Sun, sometimes they get close enough to the Sun to warm up enough so that the ice begins to evaporate.

Detailed explanation-2: -The nucleus is the solid, central part of a comet, once termed a dirty snowball or an icy dirtball. A cometary nucleus is composed of rock, dust, and frozen gases.

Detailed explanation-3: -Comets have been called “dirty snowballs.” They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun.

Detailed explanation-4: -The comet nucleus is the dirty snowball that is essentially the entire comet when it is frozen and far from the Sun. The coma is a large, dusty atmosphere surrounding the nucleus, made up of sublimated gas mixed with dust.