BY: KENZIE ROBERTS. COMETS!!!. WHAT ARE COMETS MADE OF ???. Comets are made mostly of ice (water ice, as well as carbon dioxide, or "dry" ice, and several other types), and rock , they are often called a dirty snowball!. comets come from the kyper belt and oort cloud!.
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BY: KENZIE ROBERTS
These orbit the sun every 200 or more