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15 votes
15 votes
Why do comets only have tails when they are near the sun?.

User Yessika
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1 Answer

13 votes
13 votes
When far from the sun, a comet is like a stone rolling around the universe. But when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and micro particles, electrons and ions.
User Aerows
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