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A comet is a small,
unique, fragile, irregular shaped icy celestial body unlike the
other small bodies in the solar system. When comets come close
to sun, it shows a visible coma and sometime a tail; this is due
to the effect of solar radiation upon the comet’s nucleus.
Most of comets can see from
earth travel around sun. In 1995, 878 comets have been sorted
and calculated. 184 out of these are periodic comets (Orbital
periods less than 200 years).
Sometimes comets are known as
“Dirty snowballs” or “Icy mudballs” as they are a mixture of
ices (Both water and frozen gases) and dust of some planets.
Comets also composed of variety of organic compounds such as
methanol, hydrogen cyanide, formaldehyde, ethanol and ethane.
Some comets are also posses long chain hydrocarbon and amino
acids.
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