
Comet
        A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma  and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...
    Timeline of Events
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                         1801 
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                         1892 
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                         1998 
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                         2004 
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                         2005 
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