Last Updated
：2025/11/30
dirty snowball
（ plural ）
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(informal) A comet whose nucleus is composed of an amalgamation of rock, dust, water ice, and frozen gases.
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dirty snowball
When astronomers observed the approaching dirty snowball, they detected tails of gas and dust stretching millions of kilometers.
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When astronomers observed the approaching dirty snowball, they detected tails of gas and dust stretching millions of kilometers.
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