宇宙（2021）

他们的生活帮助我们更好地了解宇宙。
their lives to help us get a better view of the universe.
当主引擎关闭时，我们的重力为零。
When the main engines cut off, we're in zero G.
我们将坦克分开，然后绕地球运行。
We separate the tank and we're orbiting the Earth.
当我们确定每个人都准备好进行任务控制时
And when we're sure that everyone is ready at mission control
我继续拉动标记为部署的开关，
and I go ahead and pull the switch marked deploy,
你正在查看钱德拉 X 射线天文台的部署。
and you're looking at the deploy of the Chandra X-ray Observatory.
钱德拉是X射线望远镜，
Chandra is an X-ray telescope,
这意味着它可以看到最有活力的光
which means that it can see the most energetic light
从宇宙向我们袭来。
coming at us from the universe.
望远镜必须在地球大气层之外
The telescope has to be outside the Earth's atmosphere
因为地球的大气层，
because the Earth's atmosphere,
谢天谢地，我们可以阻挡 X 射线。
thankfully for us, blocks out X-rays.
否则，如果......我们只会被炒。
Otherwise, if... We'd just get fried.
钱德拉卫星上升到大气层之上，
The Chandra satellite, by rising above the atmosphere,
有更清晰的视野。
has a much clearer view.
为什么研究黑洞之类的东西如此有趣？
Why is that so interesting for studying things like black holes?
黑洞可以激发附近的物质
Black holes can excite matter in their vicinity
到非常高的能量。
to very high energies.
他们可以让原子和部分原子四处游荡
They can get atoms and parts of atoms whipping around
通过将这些粒子加速到非常非常高的能量，
and by revving up those particles to very, very high energies,
他们会辐射
they will radiate
所以我们可以收集大量的信息
so we can gather enormous amounts of information
关于黑洞附近。
about the immediate vicinity of a black hole.
当我们今天看射手座A*时，
When we look at Sagittarius A* today,
它很安静，没有做太多事情。
it's quiet and not doing very much.
但是当我们观察其他超大质量黑洞时
But when we look at other supermassive black holes
在宇宙中，它们是活跃的。
in the universe, they're active.
所以你可以带着钱德拉看黑洞吃小点心，
So you can take Chandra and watch a black hole have a small snack,
也许就像一个人在下午可能会吃一点饼干一样，
maybe like a human might have a little biscuit in the afternoon,
它有点像小行星
and it's something like an asteroid
并且会有一小部分来自该事件的 X 射线特征。
and there will be a small sort of X-ray signature from that event.
但是你也可以看到一个黑洞有一个非常非常大的零食，
But you can also see a black hole have a really, really big snack,
钱德拉也许也能见证这一点。
and Chandra's may be able to witness that as well.
钱德拉目睹了一颗恒星的毁灭
Chandra has witnessed the destruction of a star
通过黑洞本身，对吧？
by a black hole itself, right?
所以这颗可怜的星星徘徊在黑洞里
So this poor star wanders in to the black hole
它撕裂了星星，它剪断了它，对吧？
that it rips the star apart, it shears it, right?
然后是那颗星星的尸体，
And then the corpse of that star,
这种开始旋转的意大利面条状物质
this sort of spaghettified matter that starts spiralling around
事件视界在 X 射线中亮起。
the event horizon lights up in X-rays.
所以要见证??这一点，观察一颗恒星的毁灭，
So to be witness to that, to observe the destruction of a star,
你知道，及时，是非凡的。
you know, in time, was just extraordinary.
这简直令人难以置信。
It's just unbelievable.
钱德拉拍了一张非常有名的照片
There's this one pretty famous image that Chandra took called
钱德拉深场南，
the Chandra Deep Field South,
这是有史以来最深的 X 射线图像。
and it's the deepest X-ray image ever.
在那个数据集中，有成千上万个黑洞，
In that one data set, there's thousands of black holes,
大概有 5,000 个，如果不是更多的话。
like maybe 5,000 of them, if not more.
它只是有助于向您展示它们无处不在
And it just kind of helps show you that they're all over the place
还有更多的发现。
and there's so much more to discover.
下次...
Next time...
..我们回到宇宙黑暗时代，
..we journey back to the cosmic dark ages,
探索大爆♥炸♥之前的时间......
exploring a time before the Big Bang...
..回答终极问题。
..to answer the ultimate question.
宇宙是怎么来的？
How did the universe come to be?
与开放大学一起穿越宇宙
Journey through the universe with the Open University
并通过这张免费海报了解有关恒星、行星和星系的更多信息。
and learn more about stars, planets and galaxies with this free poster.
通过致电订购您的海报...
Order your poster by calling...
..或者去...
..or go to...
..并遵循开放大学的链接。
..and follow the links to the Open University.
#我只是一个心怀善意的灵魂
# I'm just a soul whose intentions are good
#哦，主啊，请不要让我误会我
# Oh, Lord, please don't let me be me misunderstood
＃ 别让我被误解
# Don't let me be misunderstood
#我很努力，所以请不要让我误会...#
# I try so hard, so please, don't let me be misunderstood... #