What evocative term is often used to describe comets, which are built from ice, dust, and frozen gases?

Answer

Dirty snowball

Comets are often described using the evocative term 'dirty snowball' because they are composed of rock, dust, and various ices, including frozen water and frozen gases.

What evocative term is often used to describe comets, which are built from ice, dust, and frozen gases?
waterMaterialgasicefrozen