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Comets have been described as "dirty snowballs", and during every pass near the Sun, some of the ice and snow melts and sublimates into vapor. Once most of the snow has been dissipated, what's left is the "dirty" part; dust and pebbles.

We see the dust and pebbles as meteors when the Earth passes through the orbit of that vanished comet. For example, this question was posted on August 13, 2017, and August 13 is the peak of the "Perseid Meteor Shower".

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8y ago

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