Canadian Medical Guide > Physical Sciences > Natural Sciences > Astronomy > Solar System > Planets Terms and Definitions

Planets

Medical Definition:	Heavenly bodies with their own motion among the stars, revolving, in the case of the solar system, around the sun, along the plane of the ecliptic. They are grouped into inner planets and outer planets, based on distance from the sun and common characteristics.
Guide Notes:	no qualif; does not include comets or meteors: METEOROIDS is available; natural satellites: index under SOLAR SYSTEM
Previously Indexed:	Astronomy (1966-1990),Extraterrestrial Environment (1966-1990)

Planets Categories.

	Earth (Planet) - Planet that is the third in order from the sun. It is one of the four inner or terrestrial planets of the SOLAR SYSTEM.
	Jupiter - The fifth planet in order from the sun. It is one of the five outer planets of the solar system. Its sixteen natural satellites include Callisto, Europa, Ganymede, and Io.
	Mars - The fourth planet in order from the sun. Its two natural satellites are Deimos and Phobos. It is one of the four inner or terrestrial planets of the solar system.
	Mercury (Planet) - The first planet in order from the sun. It has no known natural satellites. It is one of the four inner or terrestrial planets of the solar system.
	Neptune - The eighth planet in order from the sun. It is one of the five outer planets of the solar system. Its two natural satellites are Nereid and Triton.
	Pluto - The ninth planet in order from the sun. It is one of the five outer planets of the solar system. Its only natural satellite is Charon.
	Saturn - The sixth planet in order from the sun. It is one of the five outer planets of the solar system. Its twelve natural satellites include Phoebe and Titan.
	Uranus - The seventh planet in order from the sun. It is one of the five outer planets of the solar system. It has five known natural satellites.
	Venus - The second planet in order from the sun. It has no known natural satellites. It is one of the four inner or terrestrial planets of the solar system.

Planets Medical Definitions and Terms

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