Difference between revisions of "Comet"
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| − | A comet is a ball of ice, typically having a diameter of | + | A comet is a ball of ice consisting of frozen gases as well as water, typically having a diameter of less than five kilometers. Comets can develop a tails made of ice, gas and dust which can be millions of kilometers in length. |
| + | Comets in orbit around stars may be highly eplitical rather than circular ( such as planets ) which takes them past the orbit of pluto. Some mass of the comet will sublimate with each pass by the sun and after many passes the comet may nolonger be active and be simply an asteroid | ||
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Revision as of 06:03, March 16, 2007
A comet is a ball of ice consisting of frozen gases as well as water, typically having a diameter of less than five kilometers. Comets can develop a tails made of ice, gas and dust which can be millions of kilometers in length. Comets in orbit around stars may be highly eplitical rather than circular ( such as planets ) which takes them past the orbit of pluto. Some mass of the comet will sublimate with each pass by the sun and after many passes the comet may nolonger be active and be simply an asteroid