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Beginning of Paper
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Comets
Have you ever looked up in the sky and seen a little ball creeping by?
If so, did you wonder what it was? That little ball is called a comet. Comets
are small, fragile, and irregularly shaped. Most are composed of frozen gas.
However, some are composed of frozen gas and non-volatile grains. ....
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Middle of Paper
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.... planets, comets are very small. They can be anywhere
from 750 meters (or less) to 20 kilometers in diameter. However, lately,
scientists have been finding proof that there are comets 300 kilometers in
diameter or greater.
Comets are still compared to the planets, though. Planets usually
follow the shape of a sphere. Most planets are fat at the equator. Comets come
in all different shapes and sizes. Most evidence that science has revealed says
that comets are extremely fragile. A comet is so poorly structured that it is
like a loose snowball--it can be pulled ....
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