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Major Planet

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major planet [′mā·jər ′plan·ət]
(astronomy)
Any of the four planets that are larger than earth: Jupiter, Saturn, Neptune, and Uranus.

Planet, Major 

(also Jovian planet), any one of the planets Jupiter, Saturn, Uranus, and Neptune. The major planets are located beyond the asteroid belt. Compared to the terrestrial planets (inner planets), they have large diameters and masses, lower mean densities, thick atmospheres, short periods of rotation, and a large number of satellites. All these characteristics decrease in moving outward from Jupiter to Neptune. They are absent in the most distant planet, Pluto, and hence Pluto is not considered to be a major planet.



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Alphabetical entries, illustrated with about 200 b&w photos, cover 180 major topics related to all major aspects of the Earth's solar system, encompassing the major planets, their satellites, small bodies, interplanetary phenomena, the cosmological context, and methods for studying the solar system.
[ILLUSTRATION OMITTED] The researchers' computer model accounts for gravitational interactions among the moon, the eight major planets and Pluto, including the effects of general relativity.
There is movement from many major planets this week and all forms of communication are extremely lucky.
 
 
 
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