Neptune

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Jupiter, Uranus, and Neptune also have rings, but Saturn's are by far the largest and most spectacular.
木星，天王星和海王星也有环，但土星的环，是迄今为止规模最大，最为壮观的。
Jupiter, Saturn, Uranus and Neptune. Those are the gas giants, the four heavyweights of the solar system. But was there once a fifth?
木星，土星，天王星和海王星。这些都是气体行星，太阳系的四个重量级。但曾经存在第五个行星吗？
Moving on through the asteroid belt we enter the realms of the gas giant planets: Jupiter, Saturn, Uranus and Neptune, all of which dwarf the Earth.
穿过小行星带继续前进，我们进入了气体巨行星区域：木星、土星、天王星、海王星，所有这些都使地球看起来像个侏儒。

Small changes in the movement of Neptune led several astronomers to believe that an undiscovered planet was affecting Neptune's orbit.
And Neptune with a Trident is helping lay the trans-Atlantic cable which was just being laid when he was painting this."
Earlier this month, on July twelfth, Neptune reached the same area in the sky that it occupied when it was first observed by Johann Galle.

Unidentified Man: Is Neptune a planet, because everybody knows that Neptune's orbit is crossed by Pluto's.
NPR: Pluto, the Un-Planet?

(PLANET) the planet eighth in order of distance and farthest from the Sun, after Uranus

the Roman god of the sea (Greek counterpart Poseidon)
the eighth planet from the sun, having eight satellites, the largest being Triton and Nereid, and a faint planar system of rings or ring fragments. Mean distance from sun: 4497 million km period of revolution around sun: 164.8 years period of rotation: 14 to 16 hours diameter and mass: 4.0 and 17.2 times that of earth respectively