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自然无常 – 绕着最大的恒星运行 – 译学馆
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自然无常 - 绕着最大的恒星运行

What If Earth Orbited UY Scuti?

Have you ever seen a sunrise like this before?
你之前有看到过这样的日出吗?
One so bright that
它明亮到
you couldn’t leave your house without sunglasses?
你不带墨镜就无法出门
And you’d want to avoid sun-tanning at all costs.
并且无论如何你都想要避免晒黑
Well, of course you haven’t, because that’s not our Sun.
你肯定没有见过 因为那不是我们的太阳
It’s the largest star that we’ve ever discovered,
它是我们迄今为止发现体积最大的恒星
UY Scuti.
盾牌座 (UY Scuti)
And if it were to replace our Sun,
如果它真的取代我们的太阳的话
it would change a lot more than just
那么它改变的将会远比
the amount of sunscreen you’d have to put on.
你要涂防晒霜的数量多的多
地球绕这颗巨型恒星运行需要多少时间?
那会对我们的季节带来什么影响?
我们能在同一个轨道上共存么
This is WHAT IF
这就是《自然无常》
And here is what would happen if Earth orbiting UY Scuti
接下来就是地球绕盾牌座运行会发生的事情
To say that UY Scuti is huge would be an understatement.
即使说盾牌座是巨大的也仍显得轻描淡写
It’s one of the largest things that
这是人类历史上发现的
the human race has ever discovered.
最大的东西之一
To put it in perspective,
确切地说
it’s about 1,700 times larger than our Sun.
它的体积大概是太阳的1700倍
If you were to fly a Boeing 777 airplane around UY Scuti,
如果你想驾驶波音777飞机绕盾牌座行驶
it would take over 1,200 years to make the trip.
那你需要1200年的时间完成这场旅行
So would a star this gigantic
所以如此巨大的一颗恒星
even fit into the center of our solar system?
可以放进位太阳系的中心么?
Before we can answer that,
在我们回答这个问题之前
we need to get to know UY Scuti a little better.
我们需要更好的了解盾牌座
Discovered by German astronomers in 1860,
它在1860年被德国天文学家发现
UY Scuti is located in the Scutum constellation,
盾牌座位于盾牌座星座
about 9,500 light-years from Earth.
离地球大概有9500光年的距离
It’s a pulsating star that swells and shrinks periodically,
它是一颗周期性膨胀和收缩的脉动星
usually shining about 400,000 times brighter than our Sun.
通常比太阳还要亮40万倍
If UY Scuti took our Sun’s place at the center of our solar system,
若盾牌座取代了太阳在太阳系中心的位置
it would engulf everything as far out as the orbit of Saturn.
它将吞噬直到土星轨道的一切东西
That includes all of us here on Earth,
这包括我们地球上的所有人
so maybe it’s better to leave that huge star where it is.
所以我们最好把它留在它原来的地方
Instead, we could just move the Earth to the orbit of UY Scuti.
或者我们可以把地球移到盾牌座的轨道上
But we’d have to be careful
但是我们必须要小心
how close we place our planet to this gigantic star.
我们和这个巨大恒星之间的距离
To be habitable, we’d have to put our planet in orbit
为了适宜居住 我们不得不把我们的星球
about 1.5 trillion km away from UY Scuti.
放在离盾牌座约1.5万亿千米的轨道上
At this distance, it would take about 10,000 years
在这个距离上 地球需要将近一万年
for the Earth to complete just one orbit around the celestial body.
才能完成一次围绕天体的轨道运行
That would change our entire concept of life as we know it.
那将会改变我们现在所有已知的生命概念
Each season would last 2,500 years.
每个季节会持续2500年
That means that entire civilizations could rise and fall
那意味着一个文明的崛起和衰落
without ever seeing more than one season.
可以在一个季节里完成
For most people,
对大部分人而言
summer might be something that they’ve only heard about through legends.
他们可能只在传说里听说过夏天
In case a perpetual winter isn’t bad enough,
如果说一个无尽的冬天不是最糟糕的
don’t forget that the orbit around UY Scuti
那么别忘了盾牌座周围的轨道
would be located right in the middle of the Milky Way,
将正好位于银河系的中心
where cosmic rays and light from other stars
在那里来自其他行星的宇宙射线和光线
would shine bright enough to keep our sky blue all day and night.
会发出足够的光芒让天空日夜明亮
On top of that,
除此之外
UY Scuti would be pulsing out extra heavy radiation about every 740 days.
每隔740天盾牌座就会发出特别剧烈的辐射
And things would only get worse the longer we stay there.
随着我们在那个星系的时间变长 情况会变得更糟
You see, UY Scuti is a red giant,
盾牌座是一个红色超巨星
which means it’s a lot closer to its death than our Sun is,
这意味着相比太阳 它离自己的死亡更近
about 40 times closer to be precise.
确切的说 是太阳死亡速度的40倍
When it does die, it’s expected to explode
当它真的死亡时 它的爆炸力
with the force of more than 100 supernovas.
预计超过100颗超新星的威力
A supernova is the explosion of a star,
超新星是指恒星的爆炸
and it’s the largest explosion that takes place in space.
它是发生在太空中最剧烈的爆炸
So the force of 100 stars exploding would obliterate everything nearby.
所以100颗恒星爆炸的力量会泯灭附近的一切
Even if Earth was far enough away to survive the blast,
尽管地球因为离的足够远而幸免于难
without the star, there would be no heat and no light,
但没有了这颗恒星 也就没有了光和热
And life couldn’t survive on Earth without those two things.
缺少这两样东西 生命将无法在地球生存
So, once again, What If it has killed off the entire human race.
那么问题又来了 人类要是灭绝了会怎样?
Maybe it’s a better idea to leave the Earth where it is,
所以也许把地球留在现在的位置是更好的
and appreciate how lucky we are to orbit our Sun.
并且感恩我们是多么幸运的在围绕太阳运行
Well, until it explodes.
直到它爆炸
But that’s a story for another WHAT IF.
但是 那是另外一个《自然无常》的故事

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视频概述

本视频带你了解迄今人类发现的最大的恒星-盾牌座UY。如果我们把盾牌座UY放在太阳系里会发生什么?如果地球不是绕着太阳转,而是绕着盾牌座UY转,人类的命运又会是怎样的呢?

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视频来源

https://www.youtube.com/watch?v=E9lXjAkymN4

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