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我们如何在28小时内到达火星? – 译学馆
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我们如何在28小时内到达火星?

How Could We Get To Mars In Only 28 Hours?

Hey there!
嘿 大家好!
Welcome to Life Noggin.
欢迎来到《品生活》
Everyone always wants to get to Mars.
每个人都总是渴望去火星
Unfortunately, the journey would be a long one,
不幸的是 依靠我们目前的技术
taking hundreds of days of travel with our current technology.
这趟旅途将会十分漫长 长达几百天
Well, what if we could shorten that time to only a matter of days
试想 如果我们不使用宇宙飞船
by throwing away our spaceships
而是用一些在太空中急速穿梭的东西
and using something that’s already zooming across space?
这趟旅程可以缩短到几天?
I’m talking about comets.
我说的是彗星
Comets are big ol’ cosmic snowballs,
彗星是一个由冻结气体 岩石和尘埃
made from frozen gases, rock, and dust
组成的巨大雪球
that end up orbiting the Sun after the other planets
当其他行星试图把彗星扔向地球
tried throwing them at Earth and missed.
但没成功时 它们便围绕地球飞行
Well, that last part probably isn’t true.
当然 最后那部分可能是假的
Everyone knows that the planets only have water gun battles.
我们都知道 行星上只有水枪之战
Not to mention, comets can actually be pretty big.
更不必说 彗星实际上可能非常大
Frozen, you could probably liken them to about the size of a small town.
这些雪球 你可以把它们比做一个小镇那么大
However, when these things get close to the Sun in their orbit,
然而 它们在自己的轨道环形并接近太阳时
they can begin to heat up.
会逐渐变热
Then they start spewing dust and gases,
接着喷涌出尘埃和气体
forming a giant glowing head.
形成一个巨大的发光脑袋
Huh. I thought only I had that problem.
哈 我认为只有我有这个顾虑
Luckily enough, if we want to use one of these things for stellar travel,
幸运的是 如果我们想用其中一个彗星进行星际旅行
we have quite a few to choose from!
我们的选择有很多!
According to NASA,
根据美国航天局
there are around 3,600 comets that we currently know of.
我们目前已知的彗星约有3600颗
Beyond that, it’s believed that there are billions of other comets out there
此外 据说在遥远的柯伊伯带还有数十亿颗彗星
orbiting our Sun in the Kuiper Belt and even more distant Oort Cloud.
甚至是更远的奥尔特云 围绕着太阳运行的
What makes comets great for getting around in space
彗星能够穿梭星际
is that they can go SUPER fast.
是因为其速度极快
Yeah, this baby can fly!
是的 这小东西会飞!
How fast they’re travelling depends on a bunch of different factors,
它们的速度取决于多种不同因素
but they can travel anywhere from a few thousand kilometers per hour,
但在一定条件下 它们的速度可以从时速几千公里
to over 160,000 kilometers per hour under certain conditions.
达到每小时超16万公里在任何地方飞行
In fact, in 2016, scientists at NASA recorded
2016年 美国航天局的科学家们记录了
a comet traveling at nearly 600 kilometers per second as it dove toward the Sun.
一颗秒速六百公里驶向太阳的彗星
That’s over 2 /million/ kilometers per hour!
那超过了两百万公里每小时!
To put that in perspective,
就此展望
if we could travel at 2 million kilometers per hour,
如果我们能以每小时两百万公里的速度飞行
then wecould get to Mars from Earth in around 28 hours,
我们可以在一天多的时间里
just little more than a single day,
约28小时就可以完成火星之旅
assuming the two planets were close together in their orbits.
假设轨道上有两颗行星距离很近
Lining up the planets is the least of our worries though.
我们可以在可控范围内排列行星
While comets can go super fast,
彗星的速度超快
getting to them would be a big problem.
登上彗星仍会是一大问题
That’s because, not even considering how hard it would be to actually commandeer one,
因为我们甚至没有考虑控制一个彗星有多难
comets just don’t typically get that close to Earth.
彗星一般离地球很远
Hale-Bopp, a comet that made the news about two decades ago,
大概二十年前新闻上报道了海尔-波普彗星
came closer to Earth than most comets do,
它比大多彗星更靠近地球
and it was still about 200 million kilometers away.
但还是有约两百万公里的距离
We might as well just go straight to Mars at that point!
照那样 我们还不如直接去火星吧!
Even if a comet did come by Earth,
即使彗星确实经过地球
we assume that its trajectory is towards Mars,
我们也断定它的轨道是朝着火星的
and we ignore that it would likely be in its more gassy, less-solid state,
并且我们忽略了它可能更多的是气体 而非固态物质
you’d still have to keep yourself alive on the comet.
你还要在彗星上生存下去
I guess if it’s only a day or so then food and water would be less of an issue
我猜如果只是一天左右 那食物和水就不是问题了
since the aliens would definitely feed you once we got there,
因为一旦我们到了那里 外星人肯定会伺候我们的
but you’d still have to worry about oxygen and protecting yourself from space.
但你仍要担心氧气 并且保护自己远离太空
You would need about 0.84 kilograms of oxygen a day,
你每天约需0.84公斤的氧气
so you better grab a spacesuit and take a big breath before jumping on the comet.
所以跳上彗星前 你最好穿上宇航服深吸一口气
So yeah, using comets as a means of space travel is probably not that viable in the end.
所以 利用彗星进行太空旅行或许并不可行
Sometimes I like doing these thought experiments, you know,
有时我喜欢做这些思维实验
and then realizing that they can’t work.
然后意识到不可能实现
But it’s still interesting!
仍然它仍很有趣!
That’s how we learn people!
这也是咱认识人类的方法!
So do you have any questions about space that you want me to answer.
你有关于太空的疑问想要我解答?
Any planets that we should cover next?
接下来我们要讲哪些行星?
Let me know right now in the comment section below!
请立刻在下方评论区告诉我吧!
Curious to know what would happen if you were trapped on the international space station?
我很好奇如果你被困在国际空间站会发生什么?
We teamed up with our friend William Osman to answer that question.
我们会与我们的朋友William Osman一起为你解答
ISS actually gets its power from solar arrays made up of thousands of solar cells.
国际空间站的能量来自上万个太阳能电池组成的阵列
These arrays can efficiently covert solar energy into electrical power.
这些阵列可以有效地将太阳能转换成电能
Typically producing more power than the station needs at one time.
通常在同一时间产生超出所需的电力
As always, my name is Blocko,
一如既往 我是Blocko
this has been Life Noggin,
这里是《品生活》
don’t forget to keep on thinking!
记得保持思考哦!

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视频概述

人类乘坐火箭可能至少需要一个月才能到达火星,那28小时之内能送你到火星吗?

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视频来源

https://www.youtube.com/watch?v=0I4pt8iP7ac

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