(单词翻译:单击)
Hey there! Welcome to Life Noggin.
大家好！欢迎来到脑洞大开的生命奇想！
Have you ever wondered why we don't have time machines already?
你有没有想过为什么我们没有时光机？
Surely with all the technological wonder of today, someone would have figured out a way for me to go back in time and ask my animator why he didn't give me bigger muscles.
今天出现了这么多技术奇迹，一定有人能想出一个办法让我回到过去，问问我的动画师为什么他没有给我画大一点的肌肉。
Is time travel even possible? Let's see if we can go back in time and convince everyone we're all named Calvin Klein... we just need to get a DeLorean first.
时间旅行有可能实现吗？我们看看能否回到过去，告诉大家我们都叫卡尔文·克莱恩，我们只需要先弄到一辆德劳瑞恩。
Ok. So the question. Can we time travel? Sure, we're always doing it!
好的。所以问题来了。我们可以进行时间旅行吗？当然，我们一直在进行！
I mean you travel in time whether you're just sitting there, walking the dog, or even taking a well-deserved nap!
我的意思是，不管你是坐着，遛狗，还是好好睡一觉，你都在时光中穿梭！
But I know, that's not what we're really asking.
但我知道，我们问的不是这个。
We want to know if we can travel in time faster or slower than we typically do, or if we could potentially travel backwards in time.
我们想知道的是，我们能否比平时更快或更慢地在时光中穿梭，或者我们是否有可能回到过去。
The answer to at least part of that is a big ol' yes! We can relatively change the speed at which we travel through time.
至少部分是可以的。我们可以相对地改变我们在时光中穿梭的速度。
Popularized in 1905 by the great Albert Einstein, the theory of special relativity determined that time does not pass at the same rate for everyone.
1905年伟大的阿尔伯特·爱因斯坦（Albert Einstein）让大家知道了狭义相对论。狭义相对论认为，时间的速度对每个人来说都不一样。
Through a phenomenon called time dilation, an observer moving relatively fast would measure time passing more slowly than a relatively stationary observer would.
有种现象叫做时间膨胀，对于移动相对较快的观察者来说，时间的流逝会比相对静止的观察者感觉到的更慢。
This means that in a relative sense, time passes more slowly for Usain Bolt while he's running a race than when you're chilling at home, watching a brand new episode of Life Noggin.
这就意味着，在相对的意义上，尤塞恩·博尔特在跑步比赛时感受到的时间，比你窝在家里看我们最新节目时候的时间要慢得多。
This is also why an astronaut sent into space would age slightly slower than their twin sister down on Earth.
同理，进入太空的宇航员老得比地球上他们的孪生姐妹稍微慢一些。
It's not just simply speed though; more gravity also makes time slow down as well.
不仅仅是速度；重力增加也会使时间变慢。
This was determined from Einstein's theory of general relativity when he realized that massive objects cause a distortion in space-time.
爱因斯坦的广义相对论认为，巨大的物体会导致时空的扭曲。
Clocks closer to a massive object, like the Earth, would seem to tick more slowly than clocks further away.
离地球等巨大物体近的时钟，似乎比离得远的时钟慢得多。
That's why your feet are probably a super tiny bit younger than your head is.
所以你的脚可能比你的头嫩得多。
That is, unless you're doing handstands all day. Keep it up over there, Young Ears! But what about traveling backwards in time?
就是这样，除非你整天都在倒立。坚持住啊，年轻人！但是时光倒流呢？
While it might not be the best to completely rule it out as a possibility, quite a few scientists believe that it could never really happen.
虽然不能完全排除这个可能性，但相当多的科学家相信它永远不会真的发生。
Stephen Hawking is one of the brilliant scientists that has thought we can't travel back in time and he threw an interesting party to give validity to that point.
史蒂芬·霍金是一位杰出的科学家，他认为我们不能回到过去，他还开了一个有趣的聚会来证明这一点。
He threw a big party, but only publicised it after the party was over.
他开了一个大派对，但在派对结束后才公开。
In theory, if people could travel back in time, then they could have heard about his party in the future and traveled back to attend the experiment in time travel… but nobody showed up.
理论上讲，如果人们能回到过去，那么他们就可以在未来听说他的聚会的消息，然后通过时光旅行回去参加实验……但是没有人出现。
While this obviously doesn't prove that time travel to the past isn't possible, it was quite an interesting experiment.
虽然这显然不能证明回到过去是不可能的，但这是一个相当有趣的实验。
I don't know about you, but I would have loved to travel back in time if it means I could hang out with the Stephen Hawking! I feel like he has to throw the best parties.
我不知道你是怎么想的，但如果我能和史蒂芬·霍金一起出去玩的话，我早就想回去了。我觉得他举办的派对一定是最好的。
That said, there are some that believe time travel to the past might be possible utilizing some super awesome things, like wormholes for instance!
话虽如此，有些人相信借助一些超棒的东西可能可以穿越到过去，比如虫洞。
Not to mention, there might be a way to travel back in time using certain laws of physics or sciences that we've yet to find! Maybe this weird thing holds the answer?
更不用说，也许有一种方法可以利用我们尚未发现的物理或科学定律回到过去。也许这个奇怪的东西能回答这个问题?
I don't know what it does! It has a hole that leads to somewhere, something goes down into... I'll figure it out.
我不知道它是干什么的！它有一个通向某处的洞，有东西进入……我会弄清楚的。
So what do you think? Is time travel to the past possible? How do you feel about time travel. Let me know yesterday in the comments section below!
你觉得呢？时间旅行过去可能吗？你觉得时间旅行怎么样？昨天在下面的评论部分告诉我！
