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what is planet?

Planet - A non-luminous celestial body larger than an asteroid or 
comet, illuminated by light from a star, such as the sun, around which 
it revolves.

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  1. A celestial body moving in an elliptical orbit around a star.
  2. The earth.
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 A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals. The term planet is ancient, with ties to history, science,mythology, and religion. The planets were originally seen by many early cultures as divine, or as emissaries of deities.

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 A non-luminous celestial body larger than an asteroid or 

comet, illuminated by light from a star, such as the sun, around which 
it revolves
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