What are Comets??????
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Comets are basically dusty snowballs which orbit the Sun. They are made of ices, such as water, carbon dioxide, ammonia and methane, mixed with dust. These materials came from the time when the Solar System was formed. Comets have an icy center (nucleus) surrounded by a large cloud of gas and dust (called the coma).
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★.Comets are the small bodies with a head and long luminous tail.They are made up of dust and frozen gases.They appear in the sky after a long period. A comet,known as Heiley's comet,appears in the sky after every 76 year interval.
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