In the night sky the moon seems rather small, but in reality it really isn’t.

在夜空中的月球顯得相當小， 但在現實中，它絕對不算小。

Central Europe would easily fit under it.

中歐可以輕易的放在月球上

The surface area of the moon is huge.

月球的表面積是巨大的。

To give you some perspective, it’s as big as the whole European continent, China, the USA, Brazil, and South Africa together.

從比較直觀的角度看，想像一下: 整個歐洲大陸、中國、美國、巴西和南非加起來，正好跟月球表面積一樣大。

Weight-wise, the moon is only about 1/81th of the mass of Earth, but how big is it in relation to Earth?

從質量方面看，月球只有地球的81分之1但它相對於地球有多大？

Quite big actually, our moon is the biggest in the solar system in relation to its planet, and it's the fifth largest moon in the solar system.

這其實算蠻大的，我們的月亮在太陽系所有環繞行星的衛星當中，是相對比例最大的一個

Quite a bit bigger than the dwarf planet Pluto.

而且它還是太陽系體積第五大的衛星，比矮行星冥王星還要大很多

Now if the moon is really that huge, how far away is it from us to seem this small in the night sky?

那麼，既然月球這麼巨大， 他要離多遠，才在夜空中顯得這麼小?

370 km, as far as the ISS maybe?

370公里 , 可能跟國際太空站一樣? 不，在這個距離，重力會直接撕裂月球。

No, at that distance, gravitational forces would rip the moon apart.

At 36000 km, it would be as far away as our most distant satellite.

在36000公里，它會跟我們的地球同步人造衛星一樣遠

Let's adjust the distance to reality, pretty far away, right?

讓我們調整至真實的距離。真的很遠，對不對？

A 747 would need 28 straight days to fly to the moon, and even with our current technology, we'd need two full days.

一架747客機將需要28日才能飛抵月球， 甚至以我們目前現在的航天技術，我們仍然需要整整兩天。

And in a car, a lot of time.

並且開車的話，那真的需要很久的時間。 那麼月球到底有多大？

So how big is the moon?

Well, it kind of depends how you define big, but seriously though, it's pretty big.

嗯，那要取決於你對“大”的定義， 實際上，它是蠻大的。

Hey Youtube, we'll try something new this month, Moon May.

歡迎收看更多的Moon May視頻

One video about cool moon stuff each Monday in May.

So, see you next week!

繁體中文字幕由Sheldonng提供

Subtitles by the Amara.org community