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    3. how aproche its the comet
    how aproche its the comet

    so what shy alwaizs com,

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    0  Views: 469 Answers: 1 Posted: 14 years ago
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      How Comets Move


      Most comets travel on long, oval paths called ellipses that bring them near the Sun and then swing them back out into deep space. [See Figure 163 on page 299.] The point nearest the Sun on an elliptical orbit is called its perihelion. At perihelion, a comet’s speed is greatest. After a comet passes perihelion and begins moving away from the Sun, its velocity steadily decreases until it reaches its farthest point from the Sun—called its aphelion. (This is similar to the way a ball thrown up into the air slows down until it reaches its highest point.) Then the comet begins falling back toward the Sun, gaining speed until it again reaches perihelion.http://www.creationscience.com/onlinebook/Comets4.html

      13 years ago. Rating: 1
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