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如果人类登陆木星会发生什么?

What Would Happen If Humans Tried To Land On Jupiter

探索一个新世界最好的方式是登陆它
The best way to explore a new world is to land on it.
这就是为什么人类将宇宙飞船
That’s why humans have sent spacecraft
送上月球 金星 火星 土卫六等更多地方
to the Moon, Venus, Mars, Saturn’s moon Titan, and more.
但在太阳系里 有一些地方
But there are a few places in the solar system
我们永远也不可能完满地理解
we will never understand as well as we’d like.
其中一个就是木星
One of them is Jupiter.
木星几乎由氢气和氦气构成
Jupiter is made of mostly hydrogen and helium gas,
因此尝试在上面降落可能
so trying to land on it would be
就像尝试降落在地球的云层上一样
like trying to land on a cloud here on Earth.
木星没有坚硬的地表来阻止你降落
There’s no outer crust to break your fall on Jupiter,
只有无穷延伸的大气
just an endless stretch of atmosphere.
那么最大的问题是
The big question then is,
你能从木星的一端降落到另一端吗?
could you fall through one end of Jupiter and out the other?
结论是 你甚至无法完成该旅程的一半
Turns out, you wouldn’t even make it halfway.
(神秘的合成音乐)
(mysterious synth music)
重要的事情首先说 木星上没有氧气
First thing’s first, Jupiter’s atmosphere has no oxygen,
因此确保带好足够的氧气以供呼吸
so make sure you bring plenty with you to breathe.
下一个问题是灼热的温度
The next problem is the scorching temperatures,
那就备带一个空调
so pack an air conditioner.
现在准备好开始史诗般的旅行
Now you’re ready for a journey of epic proportions.
至于航程 你能从木星中心堆叠起
For scale, here’s how many Earths you could stack
好几个地球
from Jupiter’s center.
一旦进入大气层的顶端
As you enter the top of the atmosphere,
在木星的重力作用下 你开始以每小时
you’re traveling at 110,000 miles-per-hour
110,000英里的速度前行
under the pull of Jupiter’s gravity.
不过要坚持住
But brace yourself.
你会很快到达下方稠密的大气层
You’ll quickly hit the denser atmosphere below,
它会像墙壁一样撞击你
which will hit you like a wall.
尽管这并不会让你停下来
It won’t be enough to stop you, though.
大约3分钟后
After about three minutes,
你将到达155英里处的云层顶端
you’ll reach the cloud tops 155 miles down.
在这里 你将体验木星旋转
Here, you’ll experience the full brunt
所带来的全部冲击力
of Jupiter’s rotation.
木星其实是我们太阳系里
Jupiter is actually the fastest rotating planet
旋转最快的星球
in our solar system.
一天相当于地球上的9.5小时
One day lasts about nine-and-a-half Earth hours.
这就产生了强大的风 能以每小时
This creates powerful winds that can whip around the planet
超过300英里的速度绕着星球转
at more than 300 miles-per-hour.
大约在云层下端75英里处
About 75 miles below the clouds,
你来到了人类探索的极限之处
you reach the limit of human exploration.
伽利略探测器在1995年
Galileo probe made it this far
进入木星大气层时就到达了这么远
when it dove into Jupiter’s atmosphere in 1995.
它仅坚持了58分钟就失去了联系
It only lasted 58 minutes before losing contact
最终被巨大的压力摧毁了
and was eventually destroyed by the crushing pressure.
降落到这里 压力几乎是地球表面的
Down here, the pressure is nearly 100 times what it is
100倍而且还看不到任何东西
on Earth’s surface and you won’t be able to see anything,
因此你必须依靠仪器来探索周围的事物
so you’ll have to rely on instruments to explore your surroundings.
降落到430英里处 压力增加了1150倍
By 430 miles down, the pressure is 1,150 times higher.
如果你在一艘建造得像里雅斯特潜艇
You might be able to survive down here
一样的宇宙飞船里 你可能会在这幸存下来
if you were in a spacecraft built like the Trieste submarine,
那是地球上潜得最深的潜艇
the deepest-diving submarine on Earth.
任何更高的压力和温度
Any deeper and the pressure and the temperature
对于宇宙飞船来说都太大到难以忍受
will be too great for the spacecraft to endure.
不管怎样 就当做你能找到一种方法
However, let’s say that you could find a way
下降到更深处
to descend even further.
你将揭开一些木星最神秘的奥秘
You will uncover some of Jupiter’s grandest mysteries.
但很遗憾 你无法告诉任何人
But sadly, you’ll have no way to tell anyone.
木星厚重的大气吸收了无线电波
Jupiter’s deep atmosphere absorbs radio waves,
因此你无法和外界取得联系
so you’d be shut off from the outside world,
无法通讯
unable to communicate.
一旦你下降到2,500英里
Once you’ve reached 2,500 miles down,
温度已经是6,100华氏度
the temperature is 6,100 degrees Fahrenheit.
其热度足以融化钨
That’s hot enough to melt tungsten,
宇宙中熔点最高的金属
the metal with the highest melting point in the universe.
此时 你已降落了至少12小时
At this point, you will have been falling for at least
甚至还没穿过它的一半
12 hours and you won’t even be halfway through.
下降到13,000英里
At 13,000 miles down,
你将到达木星最深的一层
you’ll reach Jupiter’s innermost layer.
在这里 压力比地球表面的压力
Here, the pressure is two million times stronger
强两百万倍
than that of Earth’s surface
温度比太阳表面的温度还要热
and the temperature is hotter than the surface of the Sun.
这些情况都如此极端以至于
These conditions are so extreme that they change
改变了你周围氢气的化学形态
the chemistry of hydrogen around you.
氢分子被紧紧地压在一起
Hydrogen molecules are forced so close together
从而使电子挣脱
that their electrons break loose,
形成一种叫做金属氢的特殊物质
forming an unusual substance called metallic hydrogen.
金属氢具有高反射性
Metallic hydrogen is highly reflective,
因此尝试用灯光看看下面
so if you tried using lights to see down there,
是不可能的 并且它像石头一样稠密
it would be impossible, and it’s as dense as a rock.
所以当你下降得更深
So as you travel deeper,
来自金属氢的浮力
the buoyancy force from the metallic hydrogen
抵消掉向下的重力
counteracts gravity’s downward pull.
最后 浮力会把你弹回去
Eventually, that buoyancy will shoot you back up
直到重力又把你拉回来
until gravity pulls you right back down,
就好像悠悠球 当这两种力平衡
sort of like a yo-yo, and when those two forces equal,
你将停留在木星中部自由浮动
you’ll be left free-floating in mid-Jupiter,
无法向上或向下移动也无法逃生
unable to move up or down and no way of escape.
所以说 尝试在木星降落是一个坏主意
Suffice it to say, trying to land on Jupiter is a bad idea.
我们也许无法看到在那些宏伟的云层下面有什么
We may never see what’s beneath those majestic clouds.
但我们仍然可以从遥远的地方学习
But we can still study and admire
和欣赏这个神秘的星球
this mysterious planet from afar.

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视频概述

如果我们真的能登陆在木星,会经历一个什么样的过程呢?

听录译者

收集自网络

翻译译者

小葵酱

审核员

审核员 EY

视频来源

https://www.youtube.com/watch?v=apmSXL43Xao

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