宇宙（2021）

我可以很清楚地看到一切。
I can see everything quite clearly.
它有一种鲜明的美感。
It has a stark beauty all its own.
#当我像鸽子一样漂浮时看到我
# See me when I float like a dove
# .. 天空布满了树木...... #
# ..The skies are lined with trees... #
壮观的荒凉。
Magnificent desolation.
美丽的。 美丽的。
Beautiful. Beautiful.
那不是东西吗？
Ain't that something?
#..来带我走...#
# ..Come and take me away... #
如果我问你，你从哪里来...
If I were to ask you, where do you come from...
..你打算说什么？
..what would you say?
你会讲什么故事？
What story would you tell?
你可能会说，嗯，我来自我的家乡。
You might say, well, I come from my hometown.
或我的城市或我的国家。
Or my city or my country.
如果你有一个特别广阔的视野，你可能会说，
If you've got a particularly wide perspective, you might say,
“我来自地球。”
"I come from planet Earth."
但是我们能做的最大的结构是什么
But what is the largest structure that we could
合法地打电♥话♥回家？
legitimately call home?
好吧，我认为是这样。
Well, I would argue it's that.
那微弱的光弧延伸
That faint arc of light that stretches
从地平线到地平线穿过天空。
across the sky from horizon to horizon.
它是我们银河系的外旋臂。
It's an outer spiral arm of our galaxy, the Milky Way.
我们拥有 4000 亿颗恒星的家乡岛屿。
Our home island of 400 billion stars.
银河系的名字来自密集的恒星带
The Milky Way takes its name from the dense band of stars
在最晴朗的夜晚扫过天空。
that sweeps across the sky on the clearest of nights.
从我们在地球上的有利位置来看，
From our vantage point here on Earth,
我们从内部看到银河系。
we see the galaxy from within.
但如果我们能穿越到银河系之外……
But if we could travel outside the galaxy...
..我们会看到整个结构。
..we would see the entire structure.
银河系显现为一个被黑暗包围的光之岛。
The Milky Way revealed as an island of light surrounded by darkness.
一个圆盘中有数千亿颗恒星......
Hundreds of billions of stars in a single disc...
..那是从宇宙年轻时就存在的。
..that's existed since the universe was young.
只有现在我们才能探索它的历史。
Only now are we able to explore its history.
低隆隆声
LOW RUMBLING
它是如何诞生的。
How it was born.
如何通过一系列非凡的事件，
How, through a series of remarkable events,
它成长为我们今天居住的星系。
it grew to become the galaxy we inhabit today.
以及它最终将如何结束。
And how, eventually, it will end.
我们也在这个故事中发现了自己的道路，像我们一样生活
We've discovered our own paths in this story, too, living as we do
银河系内，
inside the Milky Way,
就在它华丽的手臂上的一半多一点......
just over halfway along one of its magnificent arms...
..围绕着一颗小而熟悉的星星。
..around a small but familiar star.
从某种意义上说，银河系是一座岛屿。
The Milky Way is an island, in a sense.
你能看到的每一颗星星
Every star you can see
在夜空中是我们银河系的一部分。
in the night sky is a part of our galaxy.
我们在大星系中最近的邻居
Our nearest neighbour in large galaxies
距离我们超过两百万光年。
is over two million light years away.
所以我们肯定感觉好像我们孤立无援，
So it certainly feels as if we are isolated and alone,
在黑暗的海洋中漂流。
adrift in an ocean of dark.
这在一定程度上是正确的。
And that is true to a point.
没有任何可以想象的技术可以让我们
There is no conceivable technology that will ever allow us
身体离开我们的岛屿，
to leave our island physically,
但科学让我们在想象中留下银河
but science allows us to leave the Milky Way in our imaginations
从空间和时间不可能的角度观察我们的银河系
to view our galaxy from impossible perspectives in both space and time
并讲述它的故事。
and to tell its story.
女人说法语
WOMAN SPEAKS FRENCH
她用法语倒计时
SHE COUNTS DOWN IN FRENCH
拼贴！
Decollage!
一项使命比任何一项使命都加深了我们的理解
One mission more than any other has deepened our understanding
银河系的。
of the galaxy.
一艘以古希腊女神之名命名的航♥天♥器。
A spacecraft bearing the name of an ancient Greek goddess.
一切运行良好。
Everything functioning beautifully.
盖亚。
Gaia.
即将分离助推器。
Coming up on separation of the boosters.
地球上所有生命的祖先母亲。
Ancestral mother of all life on Earth.
四个助推器，四个光点，正在消散。
The four boosters, the four points of light, are falling away.
盖亚的使命？
Gaia's mission?
绘制银河系中数十亿颗恒星的位置...
To map the locations of billions of stars in the Milky Way...
..几乎所有这些都是第一次。
..nearly all of them for the first time.
盖亚绕着它的轴旋转……
Gaia spins on its axis...
..它的传感器在各个方向扫描星系。
..its sensors scanning the galaxy in all directions.
每颗恒星平均被映射70次......
Every star is mapped an average of 70 times...
..让盖亚计算每个人的速度和方向，
..allowing Gaia to calculate the speed and direction of each one,
确定他们的位置
pinpointing their locations
精度高达 1% 的千分之一。
with accuracies up to one-thousandth of 1%.
每小时超过 150 万颗星星。
Over 1.5 million stars every hour.
到目前为止总共将近20亿。
Almost two billion in total so far.
创建前所未有的地图。
To create a map like nothing ever seen before.
盖亚数据是迄今为止制♥作♥的最详细的星图，
The Gaia data is by far the most detailed star map ever produced,
一场我们对银河系理解的革命。
a revolution in our understanding of the Milky Way.
这是数据，看起来像
This is the data, and it looks like
艺术家对星系的印象，来自科幻小说的东西，
an artist's impression of a galaxy, something from science fiction,
但这是我们家的高精度3D地图，
but this is a high-precision 3D map of our home,
我们的星星之岛，
of our island of stars,
我们甚至可以飞过它，
and we can even fly through it,
这就是位置映射的精度。
such is the precision of the mapping of the position.
所有这些光点都是星星，
All these points of light are stars,
其中一些距离太阳系远达 30,000 光年。
some of them as far as 30,000 light years out from the solar system.
地图让我们可以穿越银河系
The map allows us to journey through the galaxy
以不可能的速度……
at impossible speeds...
..使遥远的星星触手可及。
..bringing distant stars within reach.
但这也是一次穿越时空的旅程。
But this is also a journey through time.
这张地图的非凡之处在于它是活的，
The extraordinary thing about this map is that it's alive,
某种意义上。 我的意思是，盖亚不仅仅测量位置
in a sense. I mean, Gaia didn't just measure the positions
这些明星。 它测量了它们的速度。
of these stars. It measured their velocities.
这意味着我们可以知道这些星星的去向，
That means we can tell where those stars are going,
未来的银河系会是什么样子，
what the galaxy is going to be like in the future,
但我们也可以知道它们来自哪里。
but also we can tell where they came from.
那么过去的银河系是什么样的。
So what the galaxy was like in the past.
通过反转每颗星星的方向...
By reversing the direction of every star...
..我们可以倒带他们的历史......
..we can rewind their histories...
..穿越数十亿年的时间向后旅行。
..travelling backwards in time through billions of years.
盖亚开创了一项新科学，
Gaia has initiated a new science,
一门银河考古学，
a science of galactic archaeology,
我们可以在那里询问有关起源的问题
where we can ask questions about the origins
我们银河系本身。
of our galaxy itself.
低隆隆声
LOW RUMBLING
第一个星系出现仅几亿年
The first galaxies emerged just a few hundred million years
大爆♥炸♥之后。
after the Big Bang.
宇宙被一个巨大的结构纵横交错
The universe was crisscrossed by a vast structure
被称为宇宙网。
known as the cosmic web.
巨大的暗物质细丝，
Great filaments of dark matter,
沿着重力吸引越来越密集的气体......
along which gravity attracted ever denser concentrations of gas...
..被大♥片♥空旷的空间隔开。
..separated by immense tracts of empty space.
最初的星星诞生于细丝交叉的地方，
The first stars were born where the filaments crossed,
那里的气体密度足以在自身重力作用下坍塌……
where the gas was dense enough to collapse under its own gravity...
..和星星点燃。
..and for the stars to ignite.
新星在数十亿中形成……
New stars formed in their billions...
..被它们相互的引力束缚在一起。
..bound together by their mutual gravitational pull.
这些是最早的星系。
These were the first galaxies.
其中，银河系
Amongst them, the Milky Way
在它的雏形中，
in its embryonic form,
结构更小更不规则
far smaller and more irregular in structure
比我们今天居住的成熟的螺旋星系。
than the mature spiral galaxy we inhabit today.
银河系诞生的确切细节仍然是主题
The exact details of the Milky Way's birth remain the subject
研究，但由于现代观察，这个故事
of research, but thanks to modern-day observations, the story
我们的银河系是如何从这些早期开始发展起来的
of how our galaxy grew from those early beginnings
正在变得更加明显。
is coming into much sharper relief.
盖亚数据使我们能够看到银河系是如何演化的
The Gaia data allows us to see how the Milky Way evolved
纵观其历史，
throughout its history,
以及它有一段有趣历史的线索之一
and one of the clues that it's had an interesting history