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

我们对环的结构一无所知。

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

环被认为是由什么构成的？

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过环，就在离环很近的地方。

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

并且就像环一样地球的行环不会永存。

So yeah, Saturn's rings are flat.

所以环确实非常扁平。

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

“环的质量是确定其年龄的缺失线索。”

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

这些卫或是在火上寻找水，或是拍摄环的特写照片。

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环变得扭曲，这个凸起就是构成环的颗粒组成。

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

这些物质与形成环之一“E”环的物质相同。

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

环真正让我惊讶的地方的是它的尺寸。

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，数据显示环的年龄不超过1亿年。

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的，一件完美的珠宝，环虽小却动清晰。

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

当它穿过原始周围的物质时，卫的冰层被剥离，形成了环。

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，按照天体的标准，环还很年轻，可能只有几亿年的历史。

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，当然是一个神奇的地方，不过，当你想起时，多半就会想到环。

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，有点像环，不像环都聚集在我们的卫上。

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

NASA说，围绕形成环的冰块和岩石本身并不被认为是卫。

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，主小行带就像是环一样，环的空隙是由轨道卫的重力雕刻出来的。

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

卡西尼号对环和卫系统的研究带来了许多惊喜。

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的图像时，环最令惊讶的特征出现了。