We knew nothing about the structure in Saturn's rings.

我们对土星环的结构一无所知。

What are Saturn's rings believed to be made of?

土星环被认为是由什么构成的？

So yeah, Saturn's rings are flat.

所以土星环实非常扁平。

And just like the rings of Saturn, Earth's rings wouldn't last forever.

并且就像土星环一样地球的行星环不会永存。

Their mass was the missing piece of the puzzle to determine their age.

“土星环的质量是龄的缺失线索。”

They may look for water on Mars or take close-up pictures of Saturn's rings.

这些卫星或是火星上寻找水，或是拍摄土星环的特写照片。

The bump is the result of the particles that make up the ring becoming distorted by the presence of something large.

新的大物体的出现使得土星环变得扭曲，这个凸起就是构成土星环的颗粒组成。

The substances are the same material that creates one of Saturn's rings, called the " E" ring.

这些物质与形成土星环之一“E”环的物质相同。

And when they crunched the numbers, the data suggested an age of no more than 100 million years.

当他们运算这些数字时，数据显示土星环的龄不超过1亿。

What really gets me about Saturn's rings is their scale.

土星环真正让我惊讶的地方的是它的尺寸。

As it plowed through the material around the proto-Saturn, the moon's icy layer got stripped off, forming the rings.

当它穿过原始土星周围的物质时，卫星的冰层被剥离，形成了土星环。

I still remember seeing Saturn in the eyepiece, a perfect jewel, the rings small but vivid and sharp.

我仍然记得目镜中看到的土星，一件完美的珠宝，土星环虽小却生动清晰。

The data suggests that Saturn's rings are young by celestial body standards, that is possibly a few hundred million years old.

这些数据表明，按照天体的标准，土星环还很轻，可能只有几亿的历史。

A ring of debris formed around the Earth, sort of like Saturn's rings, unlike Saturn's rings that all collected into our moon.

围绕地球形成的碎片环，有点像土星环，不像土星环都聚集我们的卫星上。

The pieces of ice and rock that form rings around Saturn are not considered moons themselves, NASA said.

NASA说，围绕土星形成环的冰块和岩石本身并不被认为是卫星。

Saturn as a planet is of course an amazing place, but come on. When you think Saturn, you think rings.

作为一颗行星，土星当然是一个神奇的地方，不过，当你想起土星时，多半就会想到土星环。

Cassini's study of the system of Saturn's rings and moons brought many surprises.

卡西尼号对土星环和卫星系统的研究带来了许多惊喜。

In addition, at this point in the future the rings around the planet Saturn will no longer exist.

此外，未来的这个时候，土星周围的环将不复存。

It discovered active volcanoes on Io, one of Jupiter's moons, and closely examined the Rings of Saturn.

它木星的卫星之一木卫一上发现了活火山，并仔细检查了土星环。

In this way, the main belt is like Saturn's rings, whose gaps are carved out by the gravity of the orbiting moons.

这样，主小行星带就像是土星环一样，环的空隙是由轨道卫星的重雕刻出来的。