Name: 我們的宇宙有多大？| BBC創意 (How big is our Universe? | BBC Ideas)
Uploaded: 2022-12-06T17:35:50.000Z
Duration: 7 min 4 s

Trying to comprehend how big the Universe is

關係子句

is one of those questions that astrophysicists

Trying to explain it in a way that's easy to understand,

試圖用一種容易理解的方式來解釋它。

具有巨大影響力的美國設計師。

released one of the most elegant and creative pieces

發佈了最優雅和最具創意的作品之一

of science communication of modern times -

It took the viewers on a journey from a picnic blanket near Lake Michigan

它把觀眾帶入了一個從密歇根湖附近的野餐毯上的旅程。

to the edge of the known Universe, and back again.

到已知宇宙的邊緣，然後再回來。

40多年後，作為一種謙卑的敬意

we're going to take a similar journey through time and space

我們將進行一次類似的時間和空間的旅行

and see how our understanding has changed along the way.

並看看我們的理解在一路上是如何變化的。

與1977年一樣，我們將以野餐開始。

Though this time, we're on the island of Sicily in Italy,

儘管這一次，我們在意大利的西西里島上。

我們將從一個一米寬的場景開始。

and every 10 seconds, we're going to move out to 10 times further away,

而每隔10秒，我們將移出10倍的距離。

and in 10 seconds, the next square will be 10 times that.

而在10秒內，下一個方塊將是這個數字的10倍。

這個運動可能看起來是線性的。

but we're actually accelerating exponentially into the distance.

但我們實際上正以指數形式加速進入遠方。

the distance someone can run in 10 seconds.

Well, if they're running at 43km/h, just under the speed of your cat.

好吧，如果他們以43公里/小時的速度跑，剛好低於你的貓的速度。

One kilometre, though our picnickers are indistinguishable now,

一公里，雖然我們的野餐者現在已經分不清了。

we can still clearly see the impact of human activity on the world.

我們仍然可以清楚地看到人類活動對世界的影響。

this is the distance a supersonic plane travels in 10 seconds,

這是一架超音速飛機在10秒內行駛的距離。

and we're now reaching the highest altitude flown by such a plane.

而且我們現在達到了這種飛機飛行的最高高度。

this is the distance the International Space Station travels

From here on, human activity will be lost to sight,

從這裡開始，人類活動將失去蹤影。

One million metres, or 10 to the 6 metres,

我們早已離開了地球的大氣層。

and soon we'll see the whole planet. What a jewel.

很快我們就會看到整個地球。真是一塊寶地。

shields us from the dangerous ionising radiation of space.

為我們遮擋了危險的太空電離輻射。

This is the time it takes for light to reach us from the moon's orbit,

這是光從月球軌道到達我們這裡所需的時間。

The Earth is now just a pale blue dot in a sky full of stars.

地球現在只是滿天星斗中的一個蒼白的藍點。

the stars appear stationary because they're so much further away.

恆星看起來是靜止的，因為它們離得太遠了。

Let's illustrate the orbits of the planets in our solar system,

讓我們來說明一下太陽系中行星的軌道。

Since 2010, the NASA Solar Dynamics Observatory

自2010年以來，美國宇航局太陽動力學觀測站

has been using an extreme ultraviolet filter

Finally, we reach the orbit of the outer planets,

最後，我們到達外行星的軌道。

the gas giants, but just specks at this distance.

在這個距離上，氣態巨頭只是一些斑點而已。

There's the orbit of Pluto, one of the dwarf planets of the Kuiper belt.

這裡有冥王星的軌道，它是柯伊伯帶的矮行星之一。

10 to the 13 metres, and we're moving out of the solar system.

10到13米，我們正在向太陽系外移動。

In 2012, the Voyager 1 spacecraft became the first human artefact

2012年，旅行者1號航天器成為第一個人類人工製品

在2018年，它的孿生兄弟旅行者2號緊隨其後。

the year the Eames were working on Powers of Ten.

這一年，伊姆斯夫婦正在研究《十國力量》。

our Sun is just one of billions of stars,

我們的太陽只是數十億顆恆星中的一顆。

and still at this distance, the night sky looks very similar

而且在這個距離上，夜空看起來非常相似

the distance light travels in one year, one light year.

光在一年內所走的距離，即一光年。

Here's our closest neighbour, Alpha Centauri.

這裡是我們最近的鄰居，半人馬座阿爾法星。

我很想知道那裡發生了什麼事。

Thanks to data collected by the Gaia spacecraft,

we're building a detailed 3D map of the Milky Way.

我們正在建立一個詳細的銀河系3D地圖。

There are between 100 and 400 billion stars in our galaxy alone,

僅在我們的銀河系中就有1000到4000億顆恆星。

and clouds of dust and gas, like these nebulae,

和塵埃和氣體雲，像這些星雲。

Images sent from the Hubble Space telescope

have been blowing our minds for a generation.

這一代人一直在打擊我們的思想。

As we move away, we begin to the see the great flat spiral of our galaxy.

當我們遠離時，我們開始看到我們銀河系的巨大平坦螺旋。

A few hundred billion stars rotating around a black hole,

幾千億顆恆星圍繞著一個黑洞旋轉。

Sagittarius A*, 4.2 million times more massive than our Sun.

人馬座A*，品質比我們的太陽大420萬倍。

reside at the centre of nearly all galaxies.

These two dwarf galaxies are the Magellanic clouds

這兩個矮小的星系是麥哲倫星雲

make up what's known as the local group of galaxies.

Soon we'll pass the supergiant elliptical galaxy M87.

很快我們就會經過超巨型橢圓星系M87。

字幕列表影片播放

我們的宇宙有多大？| BBC創意 (How big is our Universe? | BBC Ideas)

reveal

debate

journey

scene