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宇宙解密 S1 • E1 宇宙是什么? – 译学馆
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宇宙解密 S1 • E1 宇宙是什么?

What Is The Universe?

“宇宙” 通俗地说 就是“一切事物”—山川 海洋 月亮
“The Universe,” informally, means “everythingthere is” – mountains and oceans and the moon
氢的热原子核以及其他更多事物
and hot nuclear balls of hydrogen and a whole lot more.
但如果宇宙就是“一切” 是不是就意味着它包含了
But if the Universe is “everything”, doesthat mean it includes the things
某些我们不知道的存在?
that we don’t know exist?
或者是我们相信存在但是还没有看到或是注意到的存在
Or even the things that we believe exist buthaven’t yet seen or observed?
比如 未来是宇宙的一部分吗?
For example, is the future a part of the universe?
在物理学中 我们经常辨别宇宙的两个概念1)可观察到的宇宙
In physics, we usually distinguish between these two notions of universe as 1) the “observable universe,”
包括我们迄今为止能够确认或观察到的所有存在
which is everything whose existencewe’ve thus far been able to confirm or observe,
和2)以大写字母U开头的“宇宙”
and 2) “The Universe” with a capital U, or,
整个宇宙 存在或曾经存在或将会存在的一切
the whole universe, which is everything that exists, has existed, or will exist,
任何时间 任何地点 不管我们是否
any time, anywhere, regardless of whether or not
已经意识到(或将会意识到)
we’re aware of it yet (or ever will be).
当然 区别的主要原因是我们可以科学地讨论
Of course, the main reason for this distinctionis so that we can talk scientifically about
我们尚不能观测到的宇宙
parts of the universe we haven’t yet beenable to observe,
我们不能观测到某些宇宙最明显的两个原因要么是它在未来
and the two biggest reasons we might not have been able to observe a pieceof the universe yet are either it’s in the future
要么是因为它太远以至于光线不能到达地球
or it’s so far away that light fromit hasn’t had time to reach us – yet.
比如:据我们所知 宇宙起源距今已有138亿年
To explain: as far as we know, the universehad a beginning and is now around 13.8 billion years old.
光线需要时间穿越空间
Light takes time to travel through space,
所以离我们太远的地方就不能
so anywhere too far away from us just isn’t
像发现雷声总是晚于闪电一样容易被感知除非你等的时间够长
visible yet in the same way that thunder froma distant lightning strike isn’t audible – until you wait long enough.
如果你看不见 那雷声将会是风暴的第一个标志
If you were blind, the thunder would be thefirst sign you have of the storm’s existence,
一旦你听到它 你可以判断风暴一直存在
though once you hear it, you can infer thatthe storm must have existed all along.
所以在可观测到的宇宙中我们对于“存在”知道些什么?
So within the observable universe, what dowe know “exists”?
差不多只有三条:
Pretty much just three things:
时空、粒子和描述时空粒子相互作用
spacetime,particles, and the physical laws that describe
而引起地心引力 物质 势能和其他一切的自然法则
how spacetime and those particles interact to give rise to gravity and matter and forces and everything else.
我们可以公开讨论数学是否是宇宙的一部分或它是否存在于
It’s open for debate whether or not mathematicsis a part of the universe or if it exists
宇宙之外的某种数学天堂——但是如果你认为
“outside” the universe in some sort of mathematicalheavens – but if you think that mathematics
数学存在且宇宙是存在的一切物质 那么……
exists and if The Universe is everything thatexists, then, well…
这点留给大家回答
I’ll leave that up to you.
还有另一个问题 大家可能听说过平行宇宙或“多元宇宙”
There’s one other thing, though – you mayhave heard of parallel universes, or “Multiverses,”
这是一个由研究员或科学爱好者提出的想法
an idea proposed by researchers or sci-fifanatics that
也许我们所考虑的
perhaps what we think of as
宇宙实际上只是”一切”的很小一部分
The Universe is actually just a small pieceof a larger thing which is really “everything
但那是故事的另一个诗篇了
there is”… but that’s another verse in thestory.

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