评论
打印
.niggoN efiL ot emoclew dna ereht yeH Did you just reserve the intro? That was cool!
一堆奇奇怪怪的文字。刚才的前言记下了吗？好酷啊！
The Universe is pretty awesome. With our limited understanding of the Universe,
宇宙很令人敬畏。在我们对宇宙有限的理解下，
it's possible that it could keep going on forever, but it's also possible that it could end in a final cataclysmic event.
它可能永远存在下去，但是也有可能在最终的灾难事件中走向终结。
One such universe-ending theory is called the Big Crunch. You've heard of the Big Bang, right?
这个宇宙终结理论被称为宇宙大收缩理论。你听说过宇宙大爆炸对吗？
Basically, the Big Crunch is like that, but in reverse.
基本上，大收缩理论跟大爆炸有点像，但是是相反的。
It's a hypothetical scenario where the Universe would eventually stop expanding like it currently is,
这是一种假设，它说宇宙最终会停止像现在这样膨胀，
and instead contract or collapse into itself, taking everything within the Universe with it… essentially consuming itself.
相反，它会收缩或坍缩，把宇宙里的一切都带走...本质上是吞噬它自己。
Not only does that sound pretty heavy metal, but it would be, well, pretty much the end of life as we know it.
这不仅听起来很重金属，但是它真的是我们所知的生命的终结。
However, within this theory, rather than the Big Crunch simply being a dark, bitter end to everything, it could also be a new beginning of sorts.
然而在这个理论中，有可能不是终结一切的黑暗和痛苦，而是一个全新的开始。
There's this idea that it could lead to another Big Bang, starting the process all over again.
有一种观点认为它可能导致另一场大爆炸，重新开始整个过程。
You could have a virtually never-ending cycle of Big Bangs and Big Crunches,
可能会出现一个永不会结束的大爆炸和大收缩的循环。
leading to a type of cyclical universe model where, instead of switching everything off, somebody just keeps pushing the reset button.
导致产生一种周期性的宇宙模型，不是有人把它关掉，而是不断地按重启键。
That's somewhat uplifting I guess, though it does beg the whole "what's the point?" question.
我想这有些令人振奋，但是它会让人产生“这有什么意义”的问题。
Hmm. Let's save the existential dread for later! Okay this is youtube! Just keep watching! Everything's fine!
让我们回头再解决存亡的恐惧的事情！这里是油管！继续看吧！一切都很好！
All of this is purely hypothetical, of course, because there are still things that we don't really know or completely understand about the Universe.
当然，所有这一切都是假设的，因为我们仍然有一些关于宇宙的事情是我们并不真正了解或完全理解的。
One of these question marks is called dark energy, which is believed to be about 70% of the composition of the Universe.
其中一个问号被称为暗能量，据说暗能量约占宇宙组成的70%。
Little is known about dark energy other than that it's some sort of seemingly-invisible space force
人们对暗能量知之甚少，只知道它是一种似乎看不见的空间力，
that's been thought to cause the acceleration of the Universe's expansion.
它被认为是导致宇宙加速膨胀的原因。
Dark energy has been mostly thought of as a cosmological constant, which doesn't look good for the Big Crunch theory's validity.
暗能量通常被认为是一个宇宙常数，这对大爆炸理论的有效性来说并不好。
If dark energy is indeed a constant, then the Universe probably wouldn't collapse into itself, but rather keep on expanding.
如果暗能量确实是一个常数，那么宇宙或许就不会坍塌，而是继续膨胀。
In fact, recent research that came out earlier this year may take us even further away from the Big Crunch theory.
实际上，今年早些时候的一个研究可能让我们更加远离大收缩理论。
Using a combination of X-ray and ultraviolet data, astronomers have found evidence that dark energy may be getting stronger with time.
通过结合x射线和紫外线数据，天文学家发现了暗能量可能随着时间而增强的证据。
By looking at and comparing the distances of quasars — distant, super-bright black holes—,
通过观察和比较类星体——遥远的、超亮的黑洞——的距离，
the researchers found that the universe's expansion rate was faster than expected based on models where dark energy was kept as a constant.
研究人员发现，根据暗能量保持恒定的模型，宇宙的膨胀速度比预期的要快。
So, if dark energy really is getting stronger, it's way more likely that we would be looking at something called a Big Rip.
所以说，如果暗能量真的在变强的话，我们更可能面临的是大撕裂。
F's in the chat please! The Big Rip theory says that the Universe could keep on expanding to the point where it rips itself apart.
F在聊天！大撕裂理论表示，宇宙可能继续膨胀，直到膨胀到自己撕裂自己。
We're talking everything from planets, to people, to even atoms themselves getting torn apart by the Big Rip.
我们谈论的是一切，从行星，到人类，甚至原子本身也被大撕裂撕裂。
This could be the case if dark energy gets stronger and wins the tug-of-war against gravity,
这就是暗能量变强，并且赢得和地心引力的拔河比赛的情况。
which, based off of that recent research, seems more like a possibility.
基于最近的那个研究，这种情况更有可能。
Yay! The video is over but the existential dread is back on! Woo! We're probably gonna be fine though for a very long time.
耶！视频结束了，但存在的恐惧又回来了！哇！我们可能会好很长一段时间才能恢复过来。
Don't- Don't worry about it! So are there any other questions about space that you want answered?
别担心，别担心！所以关于太空你有什么问题想问我们吗？
Let me know in the comment section below, or tell me, what should i answer next? curious to know what would happen if earth only had one season?
请在下面的评论区告诉我，或者告诉我，接下来我应该回答什么问题？想知道如果地球只有一个季节会发生什么吗？
Check out this video! There actually has sort of been an example of this over 200 years ago due to a volcanic eruption.
看看这个视频吧！事实上，200多年前的一次火山喷发就是这样的一个例子。
When a volcano erupts, it releases dust, ash, and sulfur into the atmosphere that could block solar rays and actually cool the planet.
当火山喷发时，它会向大气中释放出灰尘、火山灰和硫磺，这些物质会阻挡太阳射线，实际上会使地球降温。
As always, my name is Blocko, this has been life noggin, don't forget to keep on thinking!
我是宝高，这里是脑洞大开的生命奇想。思考不要停！
