You ever wonder how small we are in the universe?

你有想過我們在宇宙中有多渺小嗎？

It turns out, pretty small!

事實證明，真的非常小！

It would be hard to pick you out of a stadium of people, much less the over 7 billion humans that live on this planet.

很難把你從擠滿人的體育館中挑出來，更不用說在超過 70 億人生活的地球上。

Since the average height for a person in the US is about 1.69 meters, let's estimate

由於美國人的平均身高約為 1.69 公尺，我們來估計一下，

and say that on their tippy toes and with their hands up in the air, the average person would be about 2 meters from their toes to their fingertips.

他們墊著腳尖並把雙手舉到空中的長度，以一般人來說，從他們腳趾到指尖約 2 公尺。

That means it would take about 162 people, all stretched out, to be as tall as the Eiffel Tower, which is 324 meters high.

這代表大約需要 162 人全部伸長手腳，才能與高達 324 公尺 的艾菲爾鐵塔一樣高。

With the diameter of our nearly-spherical Earth around 12,756 kilometers,

我們近似球體的地球，直徑約 12,756 公里，

it would take nearly 40 thousand Eiffel Towers standing on top of each other to be as tall as the diameter of the Earth.

這代表需要將近 4 萬座艾菲爾鐵塔，彼此站在頂部，才能與地球的直徑一樣高。

What's pretty cool, is that we've actually had a good understanding of how small we are compared to the Earth for quite awhile!

這真的太酷了，我們實際上已經充分了解到，我們這一刻與地球相比有多渺小！

That's because back around 2,000 years ago, the size of the Earth was calculated pretty

那是因為大約 2000 年前，地球的大小

accurately by the geographer, poet, mathematician and man-of-many-titles known as Eratosthenes.

由地理學家、詩人、數學家和有眾多頭銜的名人：埃拉托斯特尼，計算得非常準確。

Sources differ slightly, but it seems like he was only off by about 1 to 17 percent of the actual value.

來源略有不同，但看起來他的實際值僅為 1％ 至 17％。

That's pretty impressive!

這太令人欽佩了！

But that's just how small you are compared to the Earth!

但這只是把你和地球相比有多渺小而已！

You're even smaller if you compare yourself to the Sun.

如果把你自己與太陽相比的話，你又會變得更渺小。

While we may think the Sun is a super big ball of fire, it's actually kinda small compared to other stars in the universe.

雖然我們可能認為太陽是一個超級大火球，但和宇宙中其他恆星相比，它實際上有點小。

There are stars a hundred times bigger.

有恆星比它大一百倍。

Even the enormous blue star Icarus, the farthest star ever seen, is way bigger, more massive,

即使是有史以來最遠的恆星：超大藍星伊卡洛斯，比太陽更大、更重，

and possibly hundreds of thousands of times intrinsically brighter than the Sun!

本質上可能比太陽亮一百萬倍！

According to the NASA Night Sky Network, if we shrunk our Sun down to the size of a grain of sand,

根據美國國家航空暨太空總署，如果我們把太陽縮小到一顆砂子的大小，

our Solar System would be small enough to fit in the palm of your hand.

我們的太陽系可以小到適合你的手掌大小。

On this scale, the Milky Way galaxy would be about as big as North America.

在這個比例上，銀河系與北美一樣大。

And that's just our galaxy!

這就是我們的銀河系！

The Milky Way is just one of the billions of galaxies that make up our universe.

銀河系只是構成我們宇宙中數十億星系的其中一個。

That means you're a super small creature, on a planet much bigger than you are,

這代表你是一個超級小生物，住在比你大上許多的星球，

traveling around in an even bigger solar system in an even bigger galaxy, which is one of the billions in the universe.

旅行在更大的太陽系，甚至更大的銀河系中，而這只是宇宙裡數十億星系中的其中一個。

So yeah.

對，沒錯。

You're pretty tiny!

你真的非常渺小！

But hey, at least you aren't the size of one of your cells.

但是，嘿，至少你不是和你的細胞一樣大。

Your red blood cells, some of the smallest and most abundant ones in your body,

你體內的紅血球是最小且最豐富的細胞，

only have a diameter of about 7 or 8 micrometers, which are a thousand times smaller than a millimeter.

直徑只有 7 或 8 微米，比一毫米小一千倍。

A typical ant is about 10 millimeters long, so you're red blood cells are realllllly realllllly tiny, but they're still super important to your health.

典型的螞蟻一隻長約 10 毫米，所以你的紅血球真的真的非常小，但它們對你的健康仍非常重要。

So next time you're feeling small, just remember, being a tiny drop in the universe

所以，下次你感覺很渺小時，記住，就算你只是滄海一粟，

doesn't stop you from doing awesome and important things.

也無法阻擋你做出了不起且重要的事情。

Huh?

啊？

That was a good motivational quote.

這可是一段激勵人的引述。

I should put that on my Instagram.

我應該傳到 Instagram 上。

In the comment section below, i wanna learn something cool about you.

就在下方留言，我想從你身上學點好東西。

Thanks for being here, and thanks for watching!

謝謝你點進來，也感謝你的觀看！

Love Life Noggin?

喜歡 Life Noggin 嗎？

Don't forget to subscribe and hit the bell button so you're notified every time we post a new video!

別忘記訂閱並按下小鈴鐺，每次發布新影片你都會收到通知！

Curious to know what would cause planet earth to explode?

想知道什麼會導致地球爆炸？

Check out this video!

看看這部影片！

This asteroid was about 9 kilometers in diameter and it hit the planet at about 64,000 kilometers per hour.

這顆小行星直徑約 9 公里，以每小時約 64,000 公里的速度撞擊地球。

Even with all that force, it only carved out a chunk of Earth a few kilometers deep.

即使有這麼大的力量，它也只能在地球挖出了幾公里深的一塊。

As always, my name is Blocko, this has been Life Noggin, don't forget to keep on thinking!

一如往常，我是 Blocko，這裡是 Life Noggin，別忘了繼續思考！