The largest terrestrial planet, Earth has a diameter only one quarter as great as the diameter of the smallest Jovian planet, Neptune, and its mass is only one seventeenth as great.
最大的类地行星地球的直径仅仅是最小的类木行星海王星的四分之一，而且地球的质量仅仅是其质量的十七分之一。
In one simulation, a planet with the mass of Neptune situated in the habitable zone of a star - not too hot, not too cold - was given a moon the size of Earth.
在一种模拟的情景中，一个与天王星大小差不多的行星处在一个星球的可栖居的地带，不冷不热，并且周围有一个地球大小的恒星。
Since then a different planet has moved to the forefront of gas-mining plans because it lacks Jupiter's intense gravity, Saturn's gigantic rings of orbital debris and is closer than distant Neptune.
从那时起，不同的星球已经移到天然气开采计划的最前列，因为它缺乏木星的强烈引力，土星的巨大轨道碎片环并且比遥远的海王星更近。
The planet was eventually named Neptune, after the Roman god of the sea.
这颗行星最终以罗马神话中的海神命名，称为海王星。
Thanks to this law, we know that a planet relatively close to the sun, like Venus, has a far briefer orbital period than a distant planet, such as Neptune.
正因为了有这条定律，我们才能得知例如金星这样离日相对较近的行星的公转周期要短于离日较远的行星，例如海王星。
Four are a little bigger than Jupiter, the largest planet in the Earth's solar system, and one is about the size of Neptune, the fourth-largest.
有四个比地球的太阳系中的最大行星木星稍微大一点。还有一个和第四大行星海王星大小差不多。
Our planet Earth, together with other planets, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto revolve around our Sun in what is called our Solar system.
我们的地球和其他行星——水星、金星、火星、木星、土星、天王星、海王星、冥王星一起围绕着太阳旋转，构成所谓的太阳系。
Just a handful are close in size to our planet, and only a few of those may be rocky like the Earth, rather than gaseous like Jupiter or icy like Neptune.
只有少数星球在大小上接近于我们所居住的这颗行星，而且也只有这其中的少数可能像地球一样呈岩石状，而不是像木星那样呈气态状或海王星那样的冰状。
A large planet, like Jupiter or Neptune, that is composed largely of gaseous material.
气体巨行星是像木星或海王星一类包含大量的气体物质的大的行星。
The same team of astronomers who discovered it had earlier found another planet, this time a gaseous giant similar to Neptune, orbiting the same star every 5.4 days.
发现这颗行星同样一组天文学家早些时候也发现另一颗行星，该行星同海王星类似，是一颗巨大的气体行星，围绕恒星运转的周期为5.4天。
Pluto is the career planet, Venus is the planet that controls not only the matters of love but also the family life, and Neptune is the money planet, while the Moon controls the health of an Aquarian.
冥王星是事业行星，金星不仅掌控着爱情还掌控着家庭生活，海王星是财富行星，而月球掌控着水瓶座人的健康。
As it passed the planet Neptune, Voyager turned its cameras back toward the distant Earth and took a picture of the Earth as a pale blue dot.
当航行者一号探测器飞过海王星时，它面向身后遥远的地球打开所携带的照相机，拍下了一张地球的照片，这张照片就象是一个暗淡蓝点。
Pisces is ruled by the planet Neptune.
双鱼的守护星是海王星。
This new moon will be close to Neptune, the planet of inspiration, a great time to do creative writing or thinking.
这个新月会接近海王星，代表灵感、启示的行星，大好的时间去创作写作或思考。
What you learn is preparation for the rare and fabulous alliance between your ruler Jupiter and Neptune, planet of transformation, next week.
这些学习是为罕见的木星和海王星一线做准备，行星变化将在下周发生。
Neptune is the eighth planet, and the third most massive.
海王星是第八颗行星，第三个最巨大的。
1612 - Galileo Galilei becomes the first astronomer to observe the planet Neptune, although he mistakenly catalogued it as a fixed star.
1612年的今天，伽利略成为第一个观察到海王星的天文学家，尽管他把它错误描述为恒星。
At month's end, on May 27, Jupiter, the giver of gifts and luck, will meet with the planet of creativity, imagination, and inspiration, Neptune.
月末，在5月27日，表礼物与馈赠的木星，将会和表创造力，想象力和灵感的海王星会合。
Pluto is the farthest planet from the sun, but it sometimes comes closer to the sun than other planets, and occasionally it is even closer than Neptune.
冥王星是离太阳最远的行星，但是它有时比其它行星还要靠近太阳，偶尔它甚至比海王星更靠近太阳。
Indeed so could Ceres, a dwarf planet in the asteroid belt, and Pluto, a dwarf planet even farther off than Neptune.
谷神星，小卫星带上的一颗矮卫星，以及比海王星更加远的矮卫星——冥王星，也可能拥有海洋。
Neptune is the furthest planet from the sun.
海王星是离太阳最远的行星。
Occasionally, Pluto's highly elliptic orbit passes inside that of Neptune, making Neptune the furthest planet from the sun during these times.
有时，冥王星的高椭圆轨道内的传递海王星，使海王星离太阳最远的行星，在这些时间。
Although the new worlds, called exoplanets, are all bigger than Neptune, Nasa said their discovery showed that the planet hunting telescope was working well.
尽管这些被发现的新外部行星都比海王星要大，美国国家航空航天局仍表示，他们的望远镜在探测行星时运行良好。(责任编辑：李熙)。
Science magazine reports that the mysterious "Planet X" moves in a distant orbit beyond Neptune.
据《科学》杂志报道，这颗神秘的X行星的运行轨道远在海王星之外。
For the first time in your lifetime the Moon will align with Neptune, planet of dreams and fantasies here, bringing your first real sense of just how much the currents have changed.
对于您一生中第一次到月球将调整与海王星，这里的梦想和幻想的星球，把你的第一个真正意义上是多么的潮流已经改变。
Neptune is the eighth and outermost-known planet from the Sun in the Solar System.
海王星是太阳系第八大行星，也是太阳系最远的行星。
Neptune is the eighth and outermost-known planet from the Sun in the Solar System.
海王星是太阳系第八大行星，也是太阳系最远的行星。
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