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Why do comets have tails?
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When a comet approaches the Sun, its ice begins to melt. This releases dust and gas, which make a cloud around the comet. The cloud is pushed into a tail by streams of particles from the Sun called the solar wind. The tail always points away from the Sun. | | The tail of Halley's comet |
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Previous:
Back
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Book:
1001
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Section:
Space
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Chapter:
Mysteries of Space
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