- [Announcer] For the first time in history, - [播音员]有史以来第一次，
a space mission has touched down 太空任务降临了
on the far side of the moon. 在月球的另一边。
China's Chang'e-4 probe landed in the oldest 中国的嫦娥四号探测器降落在最古老的探测器上
and deepest basin on the moon's surface, 在月球表面最深的盆地，
making the mission a milestone for both China 使任务成为中国的里程碑
and space exploration as a whole. 和整个太空探索。
This isn't the first time China has landed on the moon. 这不是中国第一次降落在月球上。
In 2013 Chang'e-3 successfully touched down on Mare Imbrium, 2013年，嫦娥三号成功降落了Mare Imbrium，
a huge lava plain on the moon's surface. 月球表面有一个巨大的熔岩平原。
But until now, China has never explored 但到目前为止，中国从未进行过探索
the moon's mysterious dark side. 月亮的神秘黑暗面。
No one has. 没有人。
That's actually why it's called the dark side. 这就是为什么它被称为黑暗面。
It's not hidden from the sun, it's hidden from our view. 它并没有隐藏在太阳之外，它隐藏在我们的视野之外。
That's because the moon is in what's called 那是因为月亮在所谓的
synchronous rotation with the Earth, 与地球同步旋转，
which means every time the moon rotates once on its axis, 这意味着每次月球在其轴上旋转一次，
it also completes one orbit around the Earth. 它还完成了围绕地球的一个轨道。
As a result, we see the same face of the moon every night. 结果，我们每晚看到月亮的同一面。
In fact, we only got our first glimpse of the far side 事实上，我们只是第一次看到远方
in 1959, when the Soviet Union's Luna 3 took pictures 1959年，当苏联的卢娜3拍照时
as it flew by. 飞过的时候。
And while we've had numerous landings 虽然我们有很多登陆
on the near side of the moon, 在月球的近侧，
no one's attempted to touch down on the far side before, 没有人试图在远处触地，
and for good reason. 并且有充分的理由。
It's impossible to communicate with anything over there. 在那里与任何东西沟通都是不可能的。
Any signal would get blocked by the rest of the moon. 任何信号都会被月球的其他部分阻挡。
But China's team has a solution. 但中国的团队有一个解决方案。
They launched a relay satellite with a clear view 他们发射了一个视野清晰的中继卫星
of both Chang'e-4 and the Earth. 嫦娥四号和地球。
And so far, the plan's working. 到目前为止，该计划正在发挥作用。
Here are the very first images taken by Chang'e-4, 这是嫦娥四号拍摄的第一张照片，
the first in history ever taken from the surface 历史上第一次从表面采取的
on the dark side of the moon. 在月球的黑暗面。
What's more, you're looking at the oldest, 更重要的是，你看着最古老的，
largest, and deepest basin the moon has. 月球最大，最深的盆地。
Chang'e-4 landed on Von Karman, 嫦娥四号降落在Von Karman，
a flat landscape that sits inside South Pole-Aitken Basin. 位于南极 - 艾特肯盆地内的平坦景观。
The basin is around 2,500 kilometers across. 该盆地大约2,500公里。
That's about the distance from New York to Dallas. 那是关于从纽约到达拉斯的距离。
And it's a whopping eight kilometers deep. 它高达8公里。
For comparison, the deepest natural point on Earth, 相比之下，地球上最深的自然点，
the Challenger Deep, is nearly 11 kilometers deep. 挑战者深，近11公里深。
Next, the lander will release a rover 接下来，着陆器将释放一个流动站
that will explore the surrounding area. 这将探索周边地区。
One of it's tasks is to study the composition 其中一项任务是研究构图
of rocks and dirt in the basin. 盆地里的岩石和泥土。
Since scientists believe this is the oldest basin 由于科学家认为这是最古老的盆地
on the moon, learning what it's made of might help us 在月球上，了解它的构成可能对我们有所帮助
understand how Earth's only moon formed and evolved. 了解地球唯一的月球是如何形成和演化的。
But that's only one goal of the mission. 但这只是该任务的一个目标。
Besides cameras and spectrometers, 除了相机和光谱仪，
Chang'e-4 also brought along potatoes and silkworm eggs. 嫦娥四号还带来了土豆和蚕卵。
Researchers hope to test how well plants can grow 研究人员希望测试植物的生长情况
and eggs can hatch in the moon's low gravity. 鸡蛋可以在月球的低重力下孵化。
It's the first mini greenhouse to ever land 这是第一个登陆的迷你温室
on another world in our solar system, 在我们太阳系的另一个世界，
and might help prepare us for space colonies in the future. 并且可能有助于我们为将来的太空殖民地做好准备。