What small bodies of the solar system are gigantic in size?

Comets belong to the small bodies of the solar system. The comet’s solid nucleus has a diameter of about 1-10 km. However, the gas-dust atmosphere surrounding the core, when the comet approaches the Sun, forms a head, the diameter of which is comparable to that of the Sun (1.4 * 10 ^ 6 km). The length of a comet’s tail can be up to one astronomical unit or even more.

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