Name: 大爆炸在4分鐘內的解釋 | Michelle Thaller | 大思考 (The Big Bang explained in under 4 minutes | Michelle Thaller | Big Think)
Uploaded: 2022-11-01T19:10:32.000Z
Duration: 4 min 3 s

that we cannot see the entire universe right now.

轉承詞

And that's because there's such a thing that we quantify

這是因為有這樣一種東西，我們可以量化

The universe has existed, we think, since the Big Bang,

我們認為，自大爆炸以來，宇宙一直存在。

So as you look farther and farther out into space,

是以，當你向太空看得越來越遠的時候。

you necessarily have to look back in time.

If something is a million light years away from you,

如果某個東西離你有一百萬光年的距離。

the light that you see through binoculars tonight,

你今晚通過雙筒望遠鏡看到的光線。

我們現在有能看到這麼遠的儀器。

we can actually look back to about 400,000 years

我們實際上可以追溯到大約40萬年前

that the light has taken that long to get to us.

光線花了那麼長時間才到達我們身邊。

The whole idea of the Big Bang has been given

and certainly, one of the biggest misconceptions

is that people think that scientists feel

我的意思是，所有這些能量是如何

and all of this matter that made up the universe,

以及構成宇宙的所有這些物質。

you're saying it just came out of nothing.

No, I don't think any scientist actually believes that.

不，我不認為任何科學家真的相信這一點。

about the condition the universe was in at that point,

I mean, take our observable universe, right?

我的意思是，以我們可觀察到的宇宙為例，對嗎？

I mean, you can look from one side of the universe

我的意思是，你可以從宇宙的一邊看過去

to the other, you'll back 13.5 billion light years or more.

到另一個，你將回到135億光年或更多。

All of the stuff that we see was actually compressed

我們看到的所有東西實際上都被壓縮了

That is so much mass, so much energy and so little volume,

那是如此多的品質，如此多的能量和如此少的體積。

在這一點上，甚至不存在品質問題。

that right now, our physics doesn't go there.

現在，我們的物理學並沒有去那裡。

As we get a better idea about how gravity works

隨著我們對重力的工作原理有了更好的認識

under very extreme circumstances, huge energy densities,

在非常極端的情況下，巨大的能量密度。

we may have some idea what set off the Big Bang,

我們可能有一些想法，是什麼引發了大爆炸。

and possibly what came before the Big Bang.

So today we actually have telescopes that are so powerful,

所以今天我們實際上有了如此強大的望遠鏡。

they can see back to a time about 400,000 years

他們可以看到大約40萬年的時間

That's amazing, we can see so far away in space

太神奇了，我們可以在太空中看到這麼遠的地方

that the light has taken that long to get to us,

It's actually about as hot as the surface of the sun.

實際上，它和太陽表面一樣熱。

我們實際上無法看到更遠的地方。

Literally, in any direction you look around the sky,

從字面上看，在你環視天空的任何方向。

you see the universe as it was at that time,

你看到宇宙在那個時候的樣子。

and everything becomes just hot hydrogen gas.

But what that means is that there's a limit.

There's a bubble around us that we can see

我們周圍有一個保麗龍，我們可以看到

just because there's been time for light to come to us

只是因為有時間讓光來到我們身邊

Think about my arm being the universe before the Big Bang,

想想我的手臂就是大爆炸之前的宇宙。

that we can't even describe through modern physics.

我們甚至無法通過現代物理學來描述。

The entire observable universe that we can see now

我們現在能看到的整個可觀測的宇宙

used to be a tiny volume of it, maybe an atom in my arm.

過去它的體積很小，也許是我手臂上的一個原子。

and became the entire observable universe that we see.

併成為我們看到的整個可觀測的宇宙。

to actually be its own entirely observable universe.

實際上是它自己的完全可觀察的宇宙。

because all we're seeing is a tiny little bit of it

因為我們所看到的只是它的一小部分

that expanded to become everything that we see,

擴張到成為我們所看到的一切。

There's far more out there than what we can see.

外面的東西遠比我們能看到的多。

with videos from the world's biggest thinkers.

伴隨著世界上最大的思想家的視頻。

And to learn even more from the world's biggest thinkers,

並從世界上最大的思想家那裡學到更多。

字幕列表影片播放

大爆炸在4分鐘內的解釋 | Michelle Thaller | 大思考 (The Big Bang explained in under 4 minutes | Michelle Thaller | Big Think)

literally

stuff

entire

incredible