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Fig.(1.2) Comet Hale-Bopp

Comets with Short-periods around the Sun takes 200  while long-
period takes hundreds of thousands or million years.

Planetary Rings:

in solar system, it existed around all giant planets (Saturn, Jupiter, Nep-
tune and Uranus) with spectacular type i.e. the A, B and C of Saturn

rings Fig.(1.3).

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