“the existence of Neptune was predicted from perturbations in the orbit of Uranus and it was then identified in 1846”
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Jovian planet, gas giant
any of the four outermost planets in the solar system; much larger than Earth and gaseous in nature (like Jupiter)
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outer planet
(astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
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superior planet
any of the planets whose orbit lies outside the earth's orbit