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Comets
Beginning of essay
The first written records of date back to nearly 3,000 years ago from China and Europe. The accounts of these were believed to be the causes of terrible events that occurred afterwards. In more recent times, however, astronomers have found out what they really are.
A comet is basically a mixture ....
Middle of essay
....size of the nucleus is important because since large nuclei have a greater surface area facing the sun, which is the side that is the warmest, hence the side where most of the jets are coming from, it means more jets and greater amounts of gas and dust go into the coma. Even though the coma can get to be very large, its size can actually decrease about the time it crosses the orbit of Mars. At this distance the particles that drift out from the sun act as a powerful wind which blows the gas and .... |
| Number of words: 2266 |
Approximate pages: 9 |
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