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31 December, 11:35

When a comet nears the sun what happens to its nucleus

it becomes solid

it becomes visible

it disappears

it becomes gas

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  1. 31 December, 11:47
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    It becomes gas.

    Comets are objects composed mostly of ice and dust that grow tails when they approach the sun. All comets have a nucleus, which is the hard rock/ice object. When a comet nucleus nears the sun, solar energy begins to heat the ice and vaporize it.
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