土星是太阳系的第二大的行星。
土星是外行星之一，它的密度只有0。
按照它们与太阳的距离排列，这些行星分别是水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星。
The planets, in order of their distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
土星之后的下一颗行星是天王星。
木星、土星、天王星和海王星。这些都是气体行星，是太阳系的四个重量级。但曾经存在第五个行星吗？
Jupiter, Saturn, Uranus, and Neptune. Those are the gas giants, the four heavyweights of the solar system. But was there once a fifth?
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。
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.
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。
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.
其主要目的是利用太阳系中最大的一个的行星获得重力推动将卡西尼号弹向其最终目的地——土星。
The main purpose was to use the gravity of the largest planet in our solar system to slingshot Cassini towards Saturn, its ultimate destination.
就像比它更大的邻居-木星一样，土星也是气体行星，主要由氢和氦所组成。
Like its bigger neighbor Jupiter, Saturn is a gas planet made mostly of hydrogen and helium.
从我们的行星看去，在昼夜平分点时的土星环的面貌非常的狭窄和有限。
Seen from our planet, the view of Saturn's rings during equinox is extremely foreshortened and limited.
从我们的行星看去，在昼夜平分点时的土星环的面貌非常的狭窄和有限。
Seen from our planet, the view of Saturn's ringsduring equinox is extremely foreshortened and limited.
模拟显示，在冰层脱离之后，土星的引力将导致这颗卫星的硅酸盐核心的毁灭，将它越拉越近，最终撞向这颗行星。
After pulling off the ices, the gravity of Saturn would have doomed the moon's silicate core, tugging it closer and closer until it smashed into the planet, the simulation shows.
余下的八大行星为：水星、金星、地球、火星、木星、土星、天王星和海王星。
Eight planets officially remain: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
由于伽利略用的是20倍的望远镜，而且他眼睛的状况也很糟糕，他很可能把土星的气环搞错了，并因此得出结论-土星是由一个行星和两个卫星组成的。
With his 20-power telescope and with his eyes in bad shape he might have mistaken Saturn's gaseous ring to surmise that it was formed of one planet with two moons as satellites.
第一作者德布拉菲斯切说这颗行星在某些方面类似于土星。
Lead author Debra Fischer says the planet may resemble Saturn in some ways.
根据自己的研究，比克福德预测其他的行星包括木星、土星、海王星和天王星也应该有类似的反质子带。
Bickford's own research predicts that other planets, including Jupiter, Saturn, Neptune, and Uranus, should have similar antiproton belts.
“像土星这样的知名行星，要想呈现点完全不一样的新东西可不太容易，”赫特说。
"It's not often you get to show someone something completely new about a planet as well-known as Saturn," Hurt says.
这个恒星还有类似于土星的光环，光环的中含有来自行星和其他天体的物质，由于白矮星的引力被击碎。
The star also has rings similar to Saturn's, and some of the ring material may be from planets and other objects that were torn apart by the White Dwarf's gravity.
这个团队还初步观测到了一颗据该恒星较远的更大的、土星大小的行星。
The team also tentatively detected a larger, Saturn-size planet farther from the star.
卡西尼号飞船用红外线在高出行星北纬度的有利位置调查土星的扩展环系统。
The Cassini spacecraft surveys Saturn's outstretched ring system in infrared from a vantage point high above the planet's northern latitudes.
人们认为，液态的金属化氢可以存在于大质量行星，如木星、土星等的内部。
Liquid metallic hydrogen is thought to exist in the high-gravity interiors of Jupiter and Saturn.
对照图标出了狮子座的恒星，行星火星和土星，和早为人知的后发座星团。
Sliding your cursor over the picture will identify the planets, the stars of Leo, and a long-recognized star cluster in Coma Berenices.
如图所示，我们太阳系中的气态巨行星——木星、土星、天王星、海王星——大部分是由氢构成的。图片来自。
As indicated in the graphic, the gas giant planets of our solar system - Jupiter, Saturn, Uranus and Neptune - are mostly composed of hydrogen. Image courtesy of NASA.
直到1781年，占星学里所知的影响我们的行星只有5颗：水星、金星、火星、木星和土星。
Until 1781 there were only five planets known to affect us in the minds of astrologers: Mercury, Venus, Mars, Jupiter and Saturn.
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？
Jupiter, Saturn, Uranus and Neptune. Those are the gas giants, the four heavyweights of the solar system. But was there once a fifth?
所以要在这一幅包括行星在内的整个系统的图像中使土星环显现出来，土星环黑暗的一半被增亮了60倍，而明亮的一半被增亮了20倍。
So the dark half of the rings is 60 timesbrighter, and the bright half 20 times brighter, than they would haveappeared if the entire system, planet included, could have beencaptured in a single image.
“有充分的理由可以认定，同样的进程也会在其他行星，如木星和土星上发生”，德怀尔说。
"There's every reason to think the same processes are happening on other planets, such as Jupiter and Saturn," Dwyer said.
尘埃环、岩石还有冰块环绕着所有这些行星(形成光环)，其中以土星的光环最为著名。
Rings of dust, rock, and ice encircle all these giants, with Saturn's being the most famous.
除了因为它是土星和木星那样的巨型气态行星以外，它运行的轨道有些时候和其母星非常靠近。
Not only is the planet a gas giant similar to Jupiter or Saturn, the planet follows an orbit that brings it very close to its parent star.
云层在土星上打漩涡，土星是太阳系中第二个大行星。
Clouds swirl on Saturn, the second largest planet in our solar system.
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