article_snippet: Most are located between Mars and Jupiter in the Main Belt.
article_snippet: A comet is a rock covered in ice, methane and other compounds.
article_snippet: a rock covered in ice, methane and other compounds orbits take a rock covered in ice, methane and other compounds much further out of the early solar system.
article_snippet: Most are so small a rock covered in ice, methane and other compounds are vapourised in the atmosphere.