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# Comet

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A comet is a formation of gas, dust and ice that travels around the Sun at extremly eccentric orbits.

Every comet consists of nucleus, coma and tail.

Comets are classified according to their orbital periods.

Best known comets are :

- [Halley Comet]?
- [Encke Comet]?
- [Humason Comet]?
- [Mrkos Comet]?
- [Ikeya-Seki Comet]?

Supposedly the source of long-period comets is the Oort cloud, with short-period comets coming from the [Kuiper belt]?.

This entry primarily belongs to : Astronomy and Astrophysics section.

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Last edited July 28, 2001 12:16 pm (diff)
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