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木星不存在会怎样?

What If Jupiter Never Existed?

Hey there! Welcome to Life Noggin!
你们好 欢迎收看《品生活》!
Our solar system is pretty weird.
我们的太阳系非常神秘
Over the past few decades,
在过去几十年
scientists have discovered and confirmed over one thousand exoplanets,
科学家发现并证实了一千多颗系外行星的存在
which are planets orbit other stars.
它们环绕着其他恒星运行
And those star systems have quite a few differences from this one.
这些星系与太阳系有着明显的差异
See, most solar systems have their larger planets orbit their host stars
在大多数恒星系中 体积偏大的行星绕其主星运作的轨道
closer than Mercury orbits the sun.
比水星绕日公转还近
In fact, in 1995, the exoplanet 51 Pegasi b was discovered,
例如 我们在1995年发现的系外行星飞马座51b
which has half the mass of Jupiter
其质量为木星的一半
but is 20 times closer to its star than the Earth is to the sun.
但它与其恒星的距离却只有地日距离的1/20
These types of exoplanets which are creatively called the “Hot Jupiters”,
这类系外行星被极富创意地命名为“热木星”
are quite common in other solar systems,
它们在其他恒星系中十分常见
but weirdly they are missing from ours.
但奇怪的是 在我们的太阳系中并没有这类行星
Hot Jupiter was also my collage nick name, haha~
“热木星”还是我大学时的昵称呢 哈哈
That’s a story for another time.
那个故事下次再讲
So why are our largest planets so far away from the Sun?
那么 太阳系最大的行星为什么离太阳这么远呢?
Well, to be honest, scientists aren’t quite sure.
老实说 科学家对此还不太确定
Those are all good scientists.
他们都是优秀的科学家
But, that hasn’t stopped them from coming up with hypotheses.
但这并未阻止他们对此做出假设
And this is where the “Wandering Jupiter” idea comes in.
以下是“流浪木星”想法的来源
Some scientists believe that when our solar system was a little youngin,
一些科学家认为 在早期太阳系中
the Sun was potentially surrounded by super-Earth rocky planets.
太阳可能被多个超级地球岩石行星环绕
But then our good friend Jupiter moved inward,
但后来 我们的好朋友木星向内移动
whose gravitational pull changed the orbits of these planets,
其引力改变了这些行星的运行轨道
causing them to collide with one another,
导致它们相互碰撞
and you know, smashed them into pieces,
撞碎开来
some of which were hurtled into the sun.
其中一些碎片冲向太阳
Haha~What a way to go!
哈哈 真厉害!
However, as Jupiter later retreated,
然而 因土星的形成
being pulled away from the Sun by the formation of Saturn,
木星被引力拉离太阳 撤退至现在的位置
any leftover debris eventually formed into the rocky planets we know today:
而剩下的碎片最终形成了如今的岩石行星:
Mercury, Venus, Earth, and Mars.
水星 金星 地球和火星
And this does a good job of explaining
同时这也解释了
why the inner planets are younger than the outer gas giants.
为何内太阳系行星的形成时间要晚于外太阳系的气态巨行星
So, essentially, if this is actually what happened,
这意味着 如果以上论述的确是事实
if it weren’t for Jupiter, life on Earth would not exist.
那么没有木星 地球上就不会有生命
No, that’s not saying that life wouldn’t be possible at all,
这并不是说地球上没有存在生命的可能性
but Earth may not have ever formed
而是说如果没有木星的到来
if Jupiter hadn’t come in and destroyed what was there before.
没有它去摧毁之前的那些行星 地球可能根本不会形成
And not only is Jupiter potentially responsible for allowing Earth in the first place,
木星不仅有可能协助形成最初的地球
but it also helps protect you now.
而且现今依然保护着你们
See, in the last decade along,
仅在过去的十年里
Jupiter has been hit by at least five comets or asteroids.
就至少有5颗彗星或小行星撞击了木星
In fact, recent images from 17th March, 2016 show that
我们可以在一张2016年3月17日的图片中看到
Jupiter was hit by a small object.
一颗小型天体撞击了木星
And these impacts are just the ones that we’ve seen.
这些撞击事件还仅是我们能观测到的
Some scientists predict that these collisions probably happen once to five times every month.
一些科学家推测此类事件可能每月就会发生1-5次
And if it weren’t for Jupiter’s huge gravitational force deflecting these objects away from earth,
如果没有木星的巨大引力吸引这些天体远离地球
you humans may have been struck by them instead.
那么受到撞击的可能将是人类
And unless as your friend, I don’t recommend at all.
要不是你们的朋友 我压根就不会说这些
But there’s also a theory that Jupiter might steer space rocks our way,
但也有理论认为 木星可能会引导太空岩石向地球移动
possibly causing impact events.
接着可能导致天体撞击事件
Man Jupiter, I just don’t know anymore.
木星老兄呀 真拿你没办法
But we should still all be grateful that Jupiter exists.
不过 无论如何我们都应该感谢木星的存在
I mean, if it didn’t, you probably wouldn’t be here watching this video,
毕竟 如果没有它 你们可能就没法坐在这儿看这个视频了
and that would be pretty sad, you know?
这样该有多可惜啊!
On the topic of hypothetical questions, what if the Earth doubled in size?
另一个假设性话题:如果地球体积变为两倍大会怎样?
Check out this video.
可以看看这期视频
How would that change things?
这将会带来什么影响呢
Well, first of, the gravity would be very different.
首先 重力会有很大的改变
The earth would have eight times as much mass,
地球的质量会是现在的八倍
and gravity would be twice as strong.
重力会是现在的两倍
There’s a link in the description if you’re on mobile.
使用手机的朋友可以点击视频下方的链接
Make sure you come back every Monday for a brand new video.
记得每周一来看新视频
As always, I’m Blocko and this has been Life Noggin.
一如既往 我是Blocko 这里是《品生活》
Don’t forget to keep on thinking!
记得保持奇思妙想噢!

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视频概述

随着我们科技的发展,我们探索了地球上很多的未知。航天器发明之后,我们又开始探索太阳系,探索太空。其实从根本上说,人类未来几百年的命运取决于我们对自然界的理解,取决于我们对太阳系,甚至对宇宙的了解。人类可以在太阳系中寻找资源,更可以预防来自太阳系和宇宙的灾难。而要做到这一点,就必须要加深对各大行星、小行星、彗星和太阳的了解。这个探索的过程将会很长很长,此次这个视频中,我们将对木星进行一个简单的介绍。

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收集自网络

翻译译者

三顷

审核员

审核员 V

视频来源

https://www.youtube.com/watch?v=IDL-DO7QO3M

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