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

我们对土星环结构一无所知。

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

土星环被认为是由什么构成？

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

“土星环是确定其龄缺失线索。”

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

这些卫星或是在火星上寻找水，或是拍摄土星环特写照片。

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行星环会永存。

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

这些物与形成土星环之一“E”环物相同。

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，数据显示土星环龄超1。

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

我仍然记得在目镜中看到土星，一件完美珠宝，土星环虽小却生动清晰。

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

NASA说，围绕土星形成环冰块和岩石本身并被认为是卫星。

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

此外，在未来这个时候，土星周围环将复存在。

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

土星环真正让我惊讶地方是它尺寸。

I have just imagined flying along in a shuttlecraft across the ring right close to the rings.

我只是想象着乘坐航天飞机飞土星环，就在离土星环很近地方。

So yeah, Saturn's rings are flat.

所以土星环确实非常扁平。

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地方，，当你想起土星时，多半就会想到土星环。

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，按照天体标准，土星环还很轻，可能只有几历史。

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

当它穿原始土星周围物时，卫星冰层被剥离，形成了土星环。

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

新大物体出现使得土星环变得扭曲，这个凸起就是构成土星环颗粒组成。

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，环空隙是由轨道卫星重力雕刻出来。

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

围绕地球形成碎片环，有点像土星环，像土星环都聚集在我们卫星上。

But it's as Cassini captures images with the sun directly above the equator, that the most surprising feature of the rings emerges.

但是，当卡西尼号拍摄到太阳直射赤道上方图像时，土星环最令人惊讶特征出现了。