Why Humanity Will Never Leave The Solar System · Kurzgesagt – In a Nutshell
视频探讨人类为何难以离开太阳系,揭示宇宙中一个看不见的障碍。适合练习科技、成长和自然相关词汇。
You will never leave the solar system.
你永远无法离开太阳系。
Nobody alive today will.
今天在世的任何人都不可能做到这一点。
And maybe no human ever.
也许从来都没有人能够做到这一点……
Locked in by an invisible barrier, impossible to overcome for carbon based animals like us.
我们被一道无形的屏障所困住,这种屏障对我们这样的碳基生物来说根本无法逾越。
And not just us – there may
而且不只是我们;可能还有其他人……
be millions of alien civilizations in the universe, none of them ever able to venture into deep space in a meaningful way.
宇宙中可能存在数以百万计的外星文明,但它们中没有一个能够真正以有意义的方式探索深空。
Ok but how can this be?
好吧,但这怎么可能呢?
We've made countless videos imagining how the exploration of the galaxy and beyond should just be a question of time.
我们制作了无数视频,想象着探索银河系及其更遥远区域的过程其实只是时间问题而已。
Sort of mandatory for civilizations at a certain point.
对于发展到一定阶段的文明来说,这几乎是一种“强制性要求”(即必须做的事情)。
But there is a catch: We are pushing up against fundamental physics.
但这里有一个问题:我们的研究正在触及基础物理学的极限。
What is this barrier, made of dust and nothingness?
这个由尘埃与虚无构成的障碍究竟是什么?
And why is it so hard to overcome?
为什么克服这个困难如此艰难呢?
You Don’t Understand How Large Space Is.
你根本无法想象太空到底有多广阔。
We Don’t Either.
我们也不知道。
Conceptualizing the size of space is impossible for our ape brains that evolved to understand distances like “right here” and “over the next hill”.
对于我们这些类人猿来说,要理解空间的真正大小是不可能的。我们的大脑进化出来的功能主要是用来感知诸如“就在这里”或“在下一座山的另一边”这样的距离信息。
Space is so absurdly huge that we just check out and just hear “very far”.
宇宙的规模实在大得难以想象;当我们试图描述它的距离时,只能简单地说“非常遥远”。
“Very far” and “A million times very far” feels the same but it is not.
非常远”和“远得无数倍”听起来似乎意思一样,但实际上并非如此。
To help our brains, let us start with what makes us cross distances: speed.
为了更好地理解大脑的工作原理,让我们先从促使我们移动(即跨越距离)的因素入手:速度。
The fastest a human ever traveled in space were Astronauts at 40,000 km/h, returning from the Moon in 1969.
人类在太空中行驶的最快速度记录是由宇航员在1969年从月球返回地球时创下的,当时的速度达到了每小时40,000公里。
Not bad, but way too slow.
还不错,但速度实在太慢了。
The fastest thing humans have ever built by far is the Parker Solar Probe, which at this moment uses a physics cheatcode,
迄今为止,人类制造出的速度最快的飞行器当属帕克太阳探测器(Parker Solar Probe)。目前,该探测器正在利用某种“物理上的捷径”(即某些特殊的物理原理或技术手段)来实现更快的飞行速度。
hurling around the gravity well of Venus, accelerating to get closer to the sun.
在金星的引力场中不断运动,通过加速来逐渐接近太阳。
After seven years of doing this, the probe is shooting through space at a breathtaking 635,000 km/h.
经过七年的运行,该探测器正以惊人的速度(635,000公里/小时)在太空中飞行。
Fast enough to go around the world in 4 minutes or to cover the distance from Earth to the moon in 36.
其速度之快,足以在4分钟内绕地球一周,或在36秒内从地球抵达月球。
So let’s pretend we had a spaceship that fast, with a human crew ready to explore the universe!
那么,让我们假设我们拥有一艘速度如此之快的宇宙飞船,同时有一支人类宇航员团队随时准备探索宇宙吧!
Current rockets would need 7-10 months to reach Mars, but our new spaceship covers the distance in just two weeks!
目前的火箭需要 7 到 10 个月才能到达火星,而我们的新型宇宙飞船只需两周就能完成这段旅程!
Pretty good!
相当不错!
The next stop is Pluto which we will reach after about a year – ok much longer, but still ok!
下一站是冥王星,我们大约需要一年时间才能到达那里……好吧,其实时间要长得多,不过也没关系!
It only takes two more years to pass the heliopause and one more to pass Voyager II, which traveled over 50 years to get this far.
再过两年,我们就能穿过“日球层边界”(即太阳周围的空间区域);再过一年,我们就能超越旅行者2号探测器——它花费了超过50年的时间才抵达这里。
Great!
太好了!
The next stop is the end of the Oort cloud, the true edge of the solar system where open space begins!
下一站是奥尔特云的边缘——那里才是太阳系的真正边界,从这里开始就是浩瀚无垠的太空了!
We reach it in…
我们在……时候到达了那里。
2,500 years.
2500年。
Oh.
哦。
Oh no.
哦不……
Not only did we travel for the amount of time it took to get from the founding of the Roman Republic to the present day,
我们不仅走过了从罗马共和国建立至今的整个历史时期,
there is NOTHING out here.
这里什么都没有。
This is the invisible barrier.
这就是所谓的“无形障碍”。
The barrier of nothingness that might trap us in the solar system forever.
那片“虚无”的屏障,可能会将我们永远囚禁在太阳系之中。
Space tends to be like that.
太空通常就是这样的。